Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acsami.5b03371

Language：English  

Language：English   Publishing type：Research paper (scientific journal)  

Language：Japanese  

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/ma4024526

Publisher：Polymer Journal  

The surface modification of carbon materials is an effective method for enhancing the properties of carbon-based functional materials; particularly, the use of a polymer coating is advantageous owing to its intactness and simplicity. Polybenzimidazole (PBI) has been used to modify carbon surfaces, yet its adsorption behavior has not been thoroughly examined. In this study, the adsorption kinetics and thermodynamics of PBI adsorption on various types of carbon black with different surface morphologies and chemical compositions were analyzed via isotherm measurements. To determine the effects of the polymer, its adsorption behavior was compared to that of the PBI monomer (1,3-bis(1H-benzo[d]imidazol-2-yl)benzene (referred to as the PBI-unit)). The surface adsorption of PBI was slower than that of the PBI-unit; however, PBI exhibited a greater adsorption capacity. The PBI adsorption is an entropy-driven process, whereas PBI-unit adsorption is enthalpy-driven. The adsorption of PBI was more thermodynamically favorable on carbon surfaces with higher crystallinity (lower oxygenation) owing to the easier detachment of solvent molecules from the carbon surface, leading to a higher adsorption constant.

DOI： 10.1038/s41428-024-00950-5

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Publisher：ChemElectroChem  

Although anion-exchange membranes (AEMs) are commonly used in fuel cells and water electrolyzers, their widespread commercialization is hindered by problems such as low anion conductivity and durability. Moreover, the development of high-performance AEMs remains complex and time consuming. Here, we address these challenges by proposing an innovative approach for the efficient design and screening of AEM polymers using unsupervised machine learning. Our model, which combines principal component analysis with uniform manifold approximation and projection, generates an intuitive map that clusters AEM polymers based on structural similarities without any predefined knowledge regarding anion conductivity or other experimentally derived variables. As a powerful navigation tool, this map provides insights into promising main-chain structures, such as poly(arylene alkylene)s with consistently high conductivity and polyolefins with exceptional performance depending on the substituent. Furthermore, assisted by key molecular descriptors, inverse analysis with this model allows targeted design and property prediction before synthesis, which will significantly accelerate the discovery of novel AEM polymers. This work represents a paradigm shift not only in AEM research but also generally in materials research, moving from black-box predictions toward interpretable guidelines that foster collaboration between researchers and machine learning for efficient and informed material development.

DOI： 10.1002/celc.202400252

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Publisher：Polymer Journal  

Abstract: Functionalized carbon nanotubes have shown tremendous promise in the field of plant biotechnology for genetic engineering and cargo delivery; recent findings have shown that they can be delivered within specific organelles, such as mitochondria and chloroplasts, in intact plants. 2-Aminoisobutyric acid is an unnatural amino acid that promotes helical conformation and has been demonstrated to increase membrane permeability. Rational substitution of this amino acid into a mitochondrial targeting peptide induced a helical conformation that, when functionalized onto polymer-coated carbon nanotubes, conferred increased membrane permeability compared with that of the native peptide. The secondary structure was maintained on the surface and, when used to deliver pDNA, led to an increase in gene expression, suggesting that this method may be used to enhance the delivery efficiency of existing functional peptides.

DOI： 10.1038/s41428-024-00927-4

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Language：English   Publishing type：Research paper (scientific journal)  

Publishing type：Research paper (scientific journal)   Publisher：Royal Society of Chemistry (RSC)  

The remarkable stability of gel-coated SWCNT dispersions enables length sorting using size exclusion chromatography. Length-sorted, gel-coated SWCNTs show photoluminescence in near IR and are ready to use for various applications including near IR imaging.

DOI： 10.1039/d3ma01069d

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Publisher：Journal of Physical Chemistry C  

Polymer wrapping techniques of single-walled carbon nanotubes (SWCNTs) are used for not only their solubilization in solvents but also tube structure separation and biosensor fabrication. Locally functionalized SWCNTs (lf-SWCNTs) contain defect sites that show bright defect photoluminescence (E11* PL) and exhibit sensitive and remarkable E11* PL energy shifts in response to changes in their surrounding dielectric environment. In this study, we exploited the E11* PL responsiveness of lf-SWCNTs to investigate polymer wrapping structures around nanotubes by analyzing four vinyl polymers. The observed E11* PL energy shifts clarify the unique microenvironment formation at the defect sites based on the polymer wrapping fashion differences: Namely, the side chains of the used polymers modulate the polymer wrapping tightness that change the amounts of D2O molecules accessing to the nanotube surfaces for local polarity variation near the defect sites, which induces the polymer-dependent PL shifts. Moreover, the substituents of the modified aryl groups in lf-SWCNTs contribute to the defect site polarity and hydrophobicity, by which a clear correlation between the substituent structures and the induced PL shifts is found. Therefore, the lf-SWCNT defect sites can produce unique molecular interaction fields showing E11* PL wavelength shift responses, which would contribute to development of advanced lf-SWCNT sensors.

DOI： 10.1021/acs.jpcc.3c07692

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Language：English   Publisher：Faraday Discussions  

Single-walled carbon nanotubes (SWCNTs) exhibit p-type properties in air, necessitating electron doping using n-dopants (e.g., reducing agents) for the development of SWCNT-based electronic devices. Dimethylbenzimidazole (DMBI-H) derivatives serve as effective electron dopants, not only for SWCNTs, but also for various organic semiconducting materials. However, the doping reaction is still a subject of debate. In this study, the electron-doping reactions of ortho-methoxy-substituted DMBI-H for SWCNTs were analyzed in protic and aprotic solvents in the presence and absence of dioxygen (O2). The presence of O2 was found to cause the reduction of O2 on the SWCNT surface in the protic solvent, resulting in the production of DMBI cations and water through proton-coupled electron transfer (PCET) from the n-doped SWCNT and ethanol. This work elucidates the mechanism behind the air-stability of n-type SWCNTs.

DOI： 10.1039/d3fd00128h

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DOI： 10.1093/bulcsj/uoae024

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DOI： 10.1093/bulcsj/uoae024

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Publisher：Bulletin of the Chemical Society of Japan  

Polyfluorene and their derivatives are noted for being fascinating dispersants for single-walled carbon nanotubes (SWCNTs) because they selectively solubilize semiconducting (sem-) SWCNTs. However, the selective extraction mechanism of this unique behavior has not yet been fully clarified. In this paper, we describe a unique SWCNT solubilization behavior using 12 fluorene oligomers with different main-chain lengths (FOn, n = 2∼30), in which n is the number of fluorene-repeating unit. Sonication of SWCNTs using these oligofluorenes in toluene was found to solubilize SWCNTs when the main-chain length was longer than n = 12. Raman spectra revealed that selective sem-SWCNT extraction occurred when using the FOn with n ≥ 18, while, when using FOn (n = 12, 15), both sem- and metallic (met-) SWCNTs were solubilized. The (n,m)chiralites of the extracted SWCNTs using the fluorene oligomers differed from those using a homopolymer, poly(9,9′-di-n-octylfluorene) (PFO); that is, PFO extracted (9,7)SWCNTs well, while only FO30 slightly dissolved the (9,7)tubes, and when using other FOn (n = 12∼27), no (9,7)tubes were solubilized. The present study demonstrated the importance of the main-chain length of the oligofluorenes on selected chirality extraction of sem-SWCNTs, which is useful for designing fluorene-based compounds with selective extraction of sem-SWCNTs with a specific (n,m) chirality.

DOI： 10.1093/BULCSJ/UOAE024

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Publishing type：Research paper (scientific journal)  

Polyfluorene and their derivatives are noted for being fascinating dispersants for single-walled carbon nanotubes (SWCNTs) because they selectively solubilize semiconducting (sem-) SWCNTs. However, the selective extraction mechanism of this unique behavior has not yet been fully clarified. In this paper, we describe a unique SWCNT solubilization behavior using 12 fluorene oligomers with different main-chain lengths (FOn, n = 2∼30), in which n is the number of fluorene-repeating unit. Sonication of SWCNTs using these oligofluorenes in toluene was found to solubilize SWCNTs when the main-chain length was longer than n = 12. Raman spectra revealed that selective sem-SWCNT extraction occurred when using the FOn with n ≥ 18, while, when using FOn (n = 12, 15), both sem- and metallic (met-) SWCNTs were solubilized. The (n,m)chiralites of the extracted SWCNTs using the fluorene oligomers differed from those using a homopolymer, poly(9,9′-di-n-octylfluorene) (PFO); that is, PFO extracted (9,7)SWCNTs well, while only FO30 slightly dissolved the (9,7)tubes, and when using other FOn (n = 12∼27), no (9,7)tubes were solubilized. The present study demonstrated the importance of the main-chain length of the oligofluorenes on selected chirality extraction of sem-SWCNTs, which is useful for designing fluorene-based compounds with selective extraction of sem-SWCNTs with a specific (n,m) chirality.

DOI： 10.1093/BULCSJ/UOAE024

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： https://doi.org/10.1039/D3MA01069D

Other Link： https://pubs.rsc.org/en/content/articlelanding/2024/ma/d3ma01069d

Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.carbon.2023.118728

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Publishing type：Research paper (scientific journal)  

Serum albumin (SA) is a protein found in biofluids that is useful for diagnosing kidney and liver-related diseases. Single-walled carbon nanotubes (SWCNTs) showing photoluminescence (PL) in the near-infrared (NIR) region are prospective candidates for diagnosis NIR probes. Their NIR PL enhancement has been reported by defect introduction techniques based on local chemical functionalization of SWCNTs. The locally functionalized (lf-)SWCNTs exhibit a bright defect PL (>1000 nm) from the defect sites and its sensitive wavelength shifts in response to surrounding dielectric atmospheres have been reported. Here, we used the sensitive defect PL responses of lf-SWCNTs to establish a NIR sensing system for SA detection. A palmitic acid group that binds to SA strongly and selectively, was functionalized at the defect site of lf-SWCNTs (lf-SWCNTs-p). Compared to typical PL of unmodified SWCNTs, selective defect PL red-shifts (of 2.5 nm max.) were clearly observed according to the addition of SA in phosphate-buffered saline. The defect PL responsiveness could detect different SA from human, bovine, and mouse. The red-shifts of the defect PL occurred by formation of a high dielectric environment based on the specific binding between SA and the palmitic acid groups on the defect sites. The lf-SWCNTs-p detected SA-spiked serum and albuminuria of diabetic mouse in body fluids. The findings show that the lf-SWCNTs-p offer an NIR PL analytical tool for SA in body fluids applicable to a disease diagnosis and expand the bioapplications of lf-SWCNTs based on their molecular design-based defect engineering.

DOI： 10.1016/j.carbon.2023.118533

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Language：Japanese   Publisher：The Japanese Society for Artificial Intelligence  

<p>Functional polymers are essential materials supporting modern society and are being actively researched in an experiment-centric manner. Use of artificial intelligence (AI) or machine learning (ML) are expected to further accelerate research efficiency, but low transparency and interpretability of AI deter researchers from trusting it. This study built an explainable AI (XAI) to predict property of anion exchange membrane, a kind of functional polymer. This study is conducted in four steps: 1. Construction of an in-house database (DB); 2. Digitization of polymer structure using existing descriptors; 3. Construction of an ML model; 4. Calculate and analyze the Shapley (SHAP) values for each explanatory variable for evaluating explainability and transparency. Open DB is not available for the target material in this study, hence an in-house DB consisting structural property data of around 300 polymers was built. From 2. and 3., we built an ML model with test data prediction accuracy of 0.7983. Carrying out 4., we found that AMID_N, a descriptor-origin explanatory variable highly correlating polymer substructure and its property, is important. The findings of such important features strongly support chemical interpretation, thereby successfully obtaining a XAI that can be used in experiment cycle.</p>

DOI： 10.11517/pjsai.jsai2024.0_1f4gs1002

CiNii Research

Language：English   Publishing type：Research paper (scientific journal)   Publisher：The Carbon Society of Japan  

<p>The removal of uremic toxins such as indole using carbon-based adsorbents is essential for preventing the progression of chronic kidney disease (CKD). In this study, mesoporous carbon (MC) with a uniform diameter of 3.1 nm was used as an adsorbent for indole in aqueous media, and its adsorption kinetics and thermodynamics were studied using the conventional adsorbent AST-120 as a control. Compared to AST-120, MC shows highly efficient indole adsorption as well as remarkable adsorption selectivity for indole in the presence of various amino acids. The excellent selectivity of MC can lower the dose of the adsorbent, which may improve the treatment strategy for CKD patients.</p>

DOI： 10.7209/carbon.030304

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Language：Japanese   Publisher：The Japanese Society for Artificial Intelligence  

<p>The evaluation of protein-drug molecule interactions through molecular simulation plays a critical role in identifying drug candidates from a vast pool of chemical compounds in computational drug discovery. To increase the hit rate, which has been a challenge with traditional methods, accurate quantum chemical calculations of protein-drug molecule interactions are necessary. However, evaluating protein-drug molecule interactions using conventional quantum chemistry calculation methods is challenging. The Fragment Molecular Orbital (FMO) method allows for the calculation of protein-drug molecule interactions with quantum chemistry accuracy. Still, even using the "Fugaku" supercomputer, it takes several hours per structure, indicating a need for further reduction in computational costs. This study presents a machine learning model that predicts interaction values between proteins and drug molecules using the FMO method. This model is based on a neural network and utilizes vectors of the surrounding environment of each atom in the drug molecule as explanatory variables. Using a dataset of approximately 2000 structures, the model was trained and tested for predicting interactions in unknown structures. The model successfully predicted protein-drug molecule interactions with an R2 value of 0.59.</p>

DOI： 10.11517/pjsai.jsai2024.0_4q3is2d05

CiNii Research

Language：Others   Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

Abstract

Neutral radicals, including carbon radicals, are highly useful chemical species for the functionalization of semiconducting materials to change their electrical and optical properties owing to their high reactivity. However, boron radicals have been limited to synthetic and reaction chemistry, with rare utilization in materials science. In this study, a mixture of tetrahydroxydiboron (B₂(OH)₄) and pyridine derivatives was found to act as an electron dopant for single-walled carbon nanotubes (SWCNTs) because of the electron transfer from pyridine-mediated boron radicals generated by B–B bond dissociation to neutral radicals. In particular, the radical formed from a mixture of B₂(OH)₄ and 4-phenylpyridine ((4-Phpy)B(OH)₂^·) efficiently doped electrons into the SWCNT films; thus, n-type SWCNTs with long-term air stability for more than 50 days at room temperature were prepared. Furthermore, the experimental and theoretical surface analyses revealed that the formation of stable cations from ((4-Phpy)B(OH)₂^·) and the efficient interaction with SWCNTs due to their high planarity served as the mechanism for their stable doping.

DOI： 10.1038/s41598-023-48847-2

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Other Link： https://www.nature.com/articles/s41598-023-48847-2

Publishing type：Research paper (scientific journal)   Publisher：Royal Society of Chemistry (RSC)  

p–n patterning of a single single-walled carbon nanotube sheet is performed by photoinduced electron doping using a photobase generator. The patterned sheets show air and thermal stability and can be used as a thermoelectric power generation device.

DOI： 10.1039/d3ta05067j

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Publisher：ACS Catalysis  

Zn-substituted iron cobaltite spinel (ZnxFe1-xCo2O4, 0 < x < 0.6 in intervals of 0.2) on nickel foam (NF) is synthesized through a hydrothermal process, and carbon nanotubes (CNTs) are embedded in NF to provide additional conductivity and nucleation sites for the catalyst. Zn ions are used as a substitute for Fe in FeCo2O4 to increase the material’s electrochemical surface area and provide more active sites for electron transport at the electrode-electrolyte interface. Sufficient Zn substitution greatly promotes oxygen evolution reaction (OER) activity, and Zn0.4Fe0.6Co2O4/NF is discovered to exhibit the highest OER performance, reaching an overvoltage of 330 mV at a current density of 50 mA cm2 in 1 M NaOH. Zn0.4Fe0.6Co2O4/CNT/NF has a charge transfer resistance of 2.549 Ω and an active surface area of 526 cm2. In situ near-ambient-pressure X-ray photoelectron spectroscopy directly confirms the variation of the electrode surface composition during OER and shows that the highest percentage of CoO2 (about 51%) grows on the catalyst surface, resulting in increased surface oxygen adsorption. We identify Co(IV) as an intermediate in the OER adsorption, forming a superoxide species that is the key intermediate in oxygen gas generation.

DOI： 10.1021/acscatal.3c02326

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Language：Others   Publishing type：Research paper (scientific journal)   Publisher：Informa UK Limited  

DOI： 10.1080/14686996.2023.2261833

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Publisher：Chemistry of Materials  

Alkylated fused expanded pyridinium (CxFEP) with alkyl chain lengths (x) of 0, 6, 12, and 18 was newly synthesized and introduced into polymers as side chains for anion-exchange membrane (AEM) applications. FEP is characterized by a large π cation that offers weak electrostatic interactions with anions such as hydroxide (OH-) ions and therefore leads to high OH- conductivity in AEM. CxFEP shows a synergetic effect between the π-π interactions of FEP and van der Waals interactions of the alkyl chains and forms a strong assembly, particularly for C6FEP. On the other hand, when CxFEP was introduced into the polymers, C12FEP formed an ordered stacking assembly in the films, whereas the other polymers with shorter (C0 and C6) and longer (C18) alkyl chains exhibited no such ordered structure. For the AEM, all of the polymers showed higher ion conductivities than that of commercial ammonium-based AEM, even with their low ion-exchange capacities (IEC), probably because of their characteristic weak interactions between the FEP cation and OH-. In particular, the AEM with C12FEP showed the highest ion conductivity of 143.3 ± 27.3 mS cm-1, even with a very low IEC of 0.41 mmol g-1. In addition to the high level of ion dissociation of FEP, the molecular assembly of FEP provides ionic conduction paths. This study demonstrates the importance of high ion dissociation and the formation of a conduction pathway for AEM with high conductivity.

DOI： 10.1021/acs.chemmater.3c01329

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： https://doi.org/10.1039/D3FD00128H

Publisher：Journal of Materials Chemistry A  

1,3-Dimethyl-2-arylbenzimidazole (DMBI) derivatives act as good electron dopants for semiconductors and form DMBI cations (DMBI+). However, in the presence of oxygen, inactive oxygen adducts (DMBI-Ox) are produced by the reaction of DMBI radicals with oxygen molecules, which decreases the doping efficiency. In this study, we found that UV irradiation of DMBI-Ox generates DMBI+ and hydroxyl ions that act as electron dopants. The underlying mechanism is likely the intramolecular cyclization of DMBI-Ox, followed by the elimination of hydroxyl ions. As an application of the new photoinduced reaction of DMBI-Ox, we carried out photoinduced electron doping of single-walled carbon nanotubes (SWCNTs) using DMBI-Ox to convert p-type SWCNTs into n-type SWCNTs. The photochemical reaction proceeded on the surface of the SWCNTs in the solid state, and the photodoped n-type SWCNTs showed air stability for 20 days owing to the generation of chemically stable DMBI+ on the negatively charged SWCNT surface. This doping method offers a facile preparation method for SWCNT sheets with a p-n pattern using photomasks. We fabricated planar-type thermoelectric generator (TEG) devices using p-n-patterned SWCNT sheets. The TEG device with four p-n sequences on a hot plate (ΔT = 35 °C) showed open-circuit voltage and maximum power density values of 0.68 mV and 0.504 nW, respectively. We believe that this new photochemical n-doping method will offer various applications based on the fine and facile patterning capabilities of these sheets.

DOI： 10.1039/d2ta08131h

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Publisher：Polymer Journal  

Surface modification of carbon materials with polymers is useful for engineering surface properties and adding functionality to carbon materials. This review article describes processes for coating carbon materials with polybenzimidazoles and their applications.

DOI： 10.1038/s41428-022-00738-5

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：CHEMICAL SOC JAPAN  

Local chemical functionalization of single-walled carbon nanotubes has been developed for defect introduction to pro-duce locally functionalized SWCNTs (lf-SWCNTs). Compared with the original PL of unmodified SWCNTs, lf-SWCNTs exhibit defect photoluminescence (PL) in near -infrared (NIR) regions with higher quantum yields and red-shifted wave-lengths. Recently, using a few chemical functionalization approaches, considerably red-shifted defect PL (E11*- PL, >1250 nm) of lf-SWCNTs was observed in contrast to typical defect PL (E11* PL, 31150 nm), although the E11*- PL wave-length modulation approaches have yet been unexplored. In this study, we synthesized aryldiazonium salts containing heterocycle substituents at the ortho position for the lf-SWCNT synthesis. The resultant lf-SWCNTs selectively emitted E11* -PL and its wavelength variation was observed by modifying the heterocycle structures. Additionally, wavelength switching of E11*- PL was observed through pH variations, in which the protonation/deprotonation of the ortho-pyridine in the lf-SWCNTs induced large spectral shifts in E11*- PL compared to the observed shifts in earlier para-substituent design sys-tems employing E11* PL. The developed E11*- PL wavelength modulation method based on the functionalized molecule de-signs for the lf-SWCNT synthesis would provide novel NIR PL nanomaterials relevant to advanced bio/medical and telecom application fields.

DOI： 10.1246/bcsj.20220320

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Publisher：Polymer Journal  

We synthesized a styrene-based polymer containing fused expanded pyridinium (FEP) moieties as side chains for an anion exchange membrane. FEPs were incorporated into poly(4-azidomethylstyrene) via copper-catalyzed alkyne-azide cycloaddition (click chemistry) to yield an FEP content of 10.5 mol%, which depended on the FEP feed ratio. The FEP polymer membrane containing 10.5 mol% of FEP exhibited high hydroxide conductivity of 123.4 (±13.3) mS cm–1 with a relatively low ion-exchange capacity of 0.77 (±0.03) at 80 °C under 80% relative humidity. Density functional theory studies revealed that FEP is a considerably soft acid owing to substantial delocalization of the positive charge in the rigid π structure. The high ion conductivity and low ion-exchange capacity can be attributed to weak interactions between the hard base (hydroxide ions) and soft acid (FEP).

DOI： 10.1038/s41428-022-00730-z

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Publisher：Japanese Journal of Applied Physics  

Semiconducting single-walled carbon nanotubes (s-SWCNTs) are promising materials for thermoelectric generation (TEG) because of their large theoretical Seebeck coefficient (S). In this study, to discuss superiority of s-SWCNTs for TEG devices, thermoelectric properties of free-standing s-SWCNT sheets were compared with unsorted SWCNT sheets. To obtain the highest power density, the films were doped with triethyloxonium hexachloroantimonate and 2-(2-methoxyphenyl)-1,3-dimethyl-2,3-dihydro-1H-benzo[d]imidazole as the hole and electron dopants, respectively. The doped s-SWCNT sheets exhibited higher S but lower electrical conductivity than those of the unsorted SWCNT sheets. Consequently, the power factor of the s-SWCNT sheets was lower than that of the unsorted SWCNT sheets.

DOI： 10.35848/1347-4065/ac9e82

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Language：Others   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.ijhydene.2022.11.116

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Publisher：Journal of Power Sources  

The use of carbon materials having high crystallinity for the electrocatalyst is promising approach to improve durability of the polymer electrolyte membrane fuel cells (PEMFC) due to their excellent electrochemical stability. Polymer-coating on the surface of the carbon materials has been proposed as a unique method to deposit Pt nanoparticles homogeneously on such carbon materials. In this study, effect of the polymer-coating for the stability of Pt nanoparticle upon durability tests of the PEMFC is investigated. Pt nanoparticles deposited on the polybenzimidazole (PBI)-coated acetylene black (AB) is prepared and is used as an electrocatalyst in membrane-electrode-assembly (MEA). Accelerated durability tests (ADT) of MEA between 0.6 and 1.0 V are carried out using H2 and N2 in anode and cathode, respectively, and it is found that MEA employing PBI-coated AB shows only 8% decrease in the maximum power density, while MEA containing non-coated AB shows 34% decrease after the ADT. Structural analysis of the electrocatalysts after the ADT reveals that the PBI anchors both Pt nanoparticle and ionomer upon ADT and maintains their interfacial structure. We conclude that the polymer-coating method is promising both for the improvement of the durability and the activity of the PEMFC.

DOI： 10.1016/j.jpowsour.2022.232079

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Language：English   Publishing type：Research paper (scientific journal)  

Defect functionalization of single-walled carbon nanotubes (SWCNTs) by chemical modification is a promising strategy for near-infrared photoluminescence (NIR PL) generation at >1000 nm, which has advanced telecom and bio/medical applications. The covalent attachment of molecular reagents generates sp3-carbon defects in the sp2-carbon lattice of SWCNTs with bright red-shifted PL generation. Although the positional difference between proximal sp3-carbon defects, labeled as the defect binding configuration, can dominate NIR PL properties, the defect arrangement chemistry remains unexplored. Here, aryldiazonium reagents with π-conjugated ortho-substituents (phenyl and acetylene groups) were developed to introduce molecular interactions with nanotube sidewalls into the defect-formation chemical reaction. The functionalized chiral SWCNTs selectively emitted single defect PL in the wavelength range of ∼1230-1270 nm for (6,5) tubes, indicating the formation of an atypical binding configuration, different from those exhibited by typical aryl- or alkyl-functionalized chiral tubes emitting ∼1150 nm PL. Moreover, the acetylene-based substituent design enabled PL brightening and a subsequent molecular modification of the doped sites using click chemistry.

DOI： 10.1021/acsnano.2c09897

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Repository Public URL： https://hdl.handle.net/2324/7172674

Language：Others   Publishing type：Research paper (scientific journal)   Publisher：The Chemical Society of Japan  

DOI： 10.1246/cl.220467

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Language：English   Publishing type：Research paper (scientific journal)  

Azide functionalization produced luminescent sp2-type defects on single-walled carbon nanotubes, by which defect photoluminescence appeared in near infrared regions (1116 nm). Changes in exciton properties were induced by localization effects at the defect sites, creating exciton-engineered nanomaterials based on the defect structure design.

DOI： 10.1039/d2cc04492g

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Publisher：Materials Today Energy  

The thermoelectric performance of vertically aligned silicon (Si) nanowires (NWs) with diameters of 100–150 nm fabricated through metal-assisted chemical etching is improved using electroless-deposited gold (Au) nanoparticles (NPs) (ф ≈ 10 nm). After the deposition of metal NPs, the thermal conductivity and Seebeck coefficient of the Si NWs decrease 5.78-fold and increased 2.71-fold, respectively. Despite the 3.23-fold increase in the electric resistivity of Si NWs through the deposition of Au NPs, the figure of merit of the Au NP-deposited Si NWs is enhanced by 1320% (0.444) compared to that of pristine Si NWs (0.0337). The power factor is enhanced 2.28-fold after Au NP deposition (0.175–0.400 mV·K−2m−1). Based on finite-element method simulations of Au NP-deposited Si NW, a cold spot is generated inside the Si NW by the attached Au NP. Moreover, charge carrier trapping at the interface between the Si NW and Au NP is anticipated due to interfacial Fermi-level pinning. Cold spot and charge carrier trapping effects are proposed as important factors for enhancing the thermoelectric performance of Au NP-deposited Si NWs.

DOI： 10.1016/j.mtener.2022.101109

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Language：English   Publishing type：Research paper (scientific journal)  

Single-walled carbon nanotubes (SWCNTs) emit photoluminescence (PL) in the near-infrared (NIR) region (>900 nm). To enhance their PL properties, defect doping via local chemical functionalization has been developed. The locally functionalized SWCNTs (lf-SWCNTs) emit red-shifted and bright E11* PL originating from the excitons localized at the defect-doped sites. Here, we observe the E11* PL energy shifts induced by protein adsorption via the avidin-biotin interactions at the doped sites of lf-SWCNTs. We establish that the difference in the structures of the avidin derivatives notably influences the energy shifts. First, lf-SWCNT-tethering biotin groups (lf-SWCNTs-b) are synthesized based on diazonium chemistry, followed by post-modification. The responsiveness of the lf-SWCNTs-b to different microenvironments is investigated, and a correlation between the E11* PL energy shift and the induction-polarity parameters of surrounding solvents is established. The adsorption of neutravidin onto the lf-SWCNTs-b induces an increase in the induction-polarity parameters around the biotin-doped sites, resulting in the red-shift of the E11* PL peak. The E11* PL shift behaviors of the lf-SWCNTs-b change noticeably when avidin and streptavidin are introduced compared to the case with neutravidin. This is due to the different microenvironments formed at the biotin-doped sites, attributed to the difference in the structural features of the introduced avidin derivatives. Moreover, we successfully enhance the detection signals of lf-SWCNTs-b (>three fold) for streptavidin detection using a fabricated film device. Therefore, lf-SWCNTs exhibit significant promise for application in advanced protein detection/recognition devices based on NIR PL.

DOI： 10.1039/d2nr01440h

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Royal Society of Chemistry (RSC)  

One of the advantages of CNT-based fuel cell catalysts is the formation of free-standing sheets based on filtration. The sheets have a smoother side depending on the filtration direction, which result in the higher performance in the cell.

DOI： 10.1039/d2se00857b

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：AMER CHEMICAL SOC  

Near-infrared photoluminescence (NIR PL) at regions over 1000 nm is used by advanced optical technologies such as quantum communication and deep tissue bioimaging. We demonstrate that covalent attachment of a diarylethene derivative to single-walled carbon nanotubes (SWCNTs) introduces sp3 carbon defects into the crystalline sp2 carbon networks of SWCNTs through chemical functionalization by which red-shifted and bright NIR PL band at 1142 nm appears. Moreover, its PL wavelength switching is achieved reversibly and repeatedly based on photoisomerization of the diarylethene moieties on the nanotubes. The photoswitching phenomena confirmed by spectroscopic measurements and theoretical calculations reveal that the band gaps for PL change according to the diarylethene isomerization on the nanotubes.

DOI： 10.1021/acs.jpcc.2c02977

Web of Science

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researchmap

Language：English   Publisher：Nature Communications  

The delivery of genetic material into plants has been historically challenging due to the cell wall barrier, which blocks the passage of many biomolecules. Carbon nanotube-based delivery has emerged as a promising solution to this problem and has been shown to effectively deliver DNA and RNA into intact plants. Mitochondria are important targets due to their influence on agronomic traits, but delivery into this organelle has been limited to low efficiencies, restricting their potential in genetic engineering. This work describes the use of a carbon nanotube-polymer hybrid modified with functional peptides to deliver DNA into intact plant mitochondria with almost 30 times higher efficiency than existing methods. Genetic integration of a folate pathway gene in the mitochondria displays enhanced plant growth rates, suggesting its applications in metabolic engineering and the establishment of stable transformation in mitochondrial genomes. Furthermore, the flexibility of the polymer layer will also allow for the conjugation of other peptides and cargo targeting other organelles for broad applications in plant bioengineering.

DOI： 10.1038/s41467-022-30185-y

Web of Science

Scopus

PubMed

Language：Others   Publishing type：Research paper (scientific journal)  

In the developments of the polymer membrane electrolyte fuel cells (PEMFCs), strategic design of their catalysts layer is a key to improve the performance and durability. Especially, interfacial structure of the electrocatalysts constructed by carbon support, platinum (Pt)-based nanoparticles and polymer electrolyte so called ionomer dominates the performance. It is known that the surface coverage of the ionomers onto the carbon-supported Pt nanoparticles generates overpotentials in the catalyst layer. To avoid this, an ionomer-free electrocatalyst is developed by functionalized surface of carbon supports, in which the support is covalently grafted to benzenesulfonic acid to facilitate the proton conduction on the carbon surface and Pt nanoparticles are attached to the acid-grafted carbon support. In single-cell measurements, although the ionomer-free electrocatalyst exhibits larger proton resistance than a conventional ionomer-based electrocatalyst, higher activity at low (<0.01 A cm−2) and high (>1.7 A cm−2) current densities were achieved owing to increased oxygen reduction reaction activity and decreased oxygen diffusion resistance, respectively. Elimination of the ionomer reduces both the interfacial overpotential as well as diffusion overpotential of the oxygen.

DOI： 10.1016/j.jpowsour.2022.231192

Web of Science

Scopus

researchmap

Language：English  

The delivery of genetic material into plants has been historically challenging due to the cell wall barrier, which blocks the passage of many biomolecules. Carbon nanotube-based delivery has emerged as a promising solution to this problem and has been shown to effectively deliver DNA and RNA into intact plants. Mitochondria are important targets due to their influence on agronomic traits, but delivery into this organelle has been limited to low efficiencies, restricting their potential in genetic engineering. This work describes the use of a carbon nanotube-polymer hybrid modified with functional peptides to deliver DNA into intact plant mitochondria with almost 30 times higher efficiency than existing methods. Genetic integration of a folate pathway gene in the mitochondria displays enhanced plant growth rates, suggesting its applications in metabolic engineering and the establishment of stable transformation in mitochondrial genomes. Furthermore, the flexibility of the polymer layer will also allow for the conjugation of other peptides and cargo targeting other organelles for broad applications in plant bioengineering.

CiNii Research

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1038/s41428-021-00551-6

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/cl.210149

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/d1cc01354h

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acs.jpcc.1c02109

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jpowsour.2021.229855

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acsabm.1c00299

Language：Others   Publishing type：Research paper (scientific journal)  

<p>Thermal deposition of n-dopant onto SWCNT sheet (p-type) using patterned mask can fabricate p–n patterns with high special resolution. Thermoelectric generator using patterned SWCNT sheets exhibited power density of 60 nW cm⁻² at Δ<italic>T</italic> = 25 °C.</p>

DOI： 10.1039/d1ta02206g

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jpowsour.2020.228932

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1080/14686996.2021.1902243

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acsanm.0c01561

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.3390/MA13173808

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/jacs.0c03994

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/jacs.0c03994

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/BCSJ.20190357

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/BCSJ.20190357

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1038/s41598-018-37675-4

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acsomega.9b01466

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/bcsj.20190208

Language：English   Publishing type：Research paper (scientific journal)  

In the development of lithium (Li)–oxygen (O ) rechargeable batteries, the improvement of the rechargeability is one of the key issues to be solved. Herein, a novel strategy to solve this issue is explored using polymer-wrapped single-walled carbon nanotubes (SWCNTs) as the cathode material. Poly[2,2’-(2,6-pyridine)-5,5’-bibenzimidazole] (PyPBI), employed as the wrapping polymer of the SWCNTs, served to coordinate Li ions and to facilitate a favorable deposition of the discharge products on the SWCNTs during the discharge reaction at the cell cathode. As a result, the rechargeability of the cell (SWCNT/PyPBI-cell) was improved compared to the cell having nonwrapped SWCNTs as the cathode (SWCNT-cell). 2

DOI： 10.1038/s41428-019-0207-2

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.diamond.2019.107459

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acsanm.9b01174

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.electacta.2019.05.007

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c9cc02712b

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/cl.190203

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c9cc00829b

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/bcsj.20180272

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c8cc10264c

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1080/14686996.2019.1567107

Language：Others  

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/bcsj.20190208

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/chem.201805342

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.mtener.2018.08.016

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/bcsj.20180206

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.carbon.2018.07.002

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/chem.201800904

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acs.jpcc.8b00247

Language：Others   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/jacs.8b03873

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.2485/jhtb.27.139

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acsenergylett.7b01096

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/cl.171069

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/cphc.201700815

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/cctc.201700921

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/cl.170744

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c7ta01318c

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1038/srep45384

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.synthmet.2016.11.042

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c6ta07882f

Language：English  

Toward the development of highly durable polymer electrolyte fuel cell using carbon nanotube

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.ijhydene.2016.08.198

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jpowsour.2016.09.086

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1080/00914037.2016.1201829

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/cl.160399

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acsami.6b01316

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jpowsour.2016.03.108

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1080/01496395.2016.1147468

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.ijhydene.2016.03.022

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/cl.151086

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1038/pj.2015.98

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1038/pj.2015.98

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1038/srep21314

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/cctc.201501089

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jpowsour.2015.09.069

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c5nr05066a

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1038/srep16711

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1038/srep16711

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c5ta01650a

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acsami.5b03371

Language：English   Publishing type：Research paper (scientific journal)  

Poly-/oligofluorenes are promising luminescent materials applicable in organic light emitting diodes, lasers, etc. In particular, the β-phase structure, in which the fluorene main chain adopts a planar conformation with extended conjugation, shows characteristic optical properties. In this study, we have synthesized oligo(9,9′-dioctylfluorenes) whose chain lengths (n) are n = 9, 12, 15, 18, 21, 24 and 27 mers. Interestingly, the β-phase formation of the oligofluorenes is observed remarkably for oligofluorenes with n > 15, which is confirmed by the UV/vis and fluorescence spectroscopy. This study elucidates the structure-property relationship required to design high performance fluorene-based materials. Such a chain-length-dependent optical property provides useful information for utilizing the materials in many applications.

DOI： 10.1039/c5py00385g

Language：English  

DOI： 10.1088/1468-6996/16/2/024802

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1038/srep07951

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/bcsj.20140277

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/cl.140663

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/cctc.201402565

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/cl.140489

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c4ta03956d

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1038/srep06295

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c4ra06792d

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1088/1468-6996/15/4/045002

Language：English   Publishing type：Research paper (other academic)  

DOI： 10.1149/06403.0159ecst

Language：English   Publishing type：Research paper (other academic)  

DOI： 10.1149/06403.0151ecst

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c4nr02625j

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c4nr03429e

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c4nr00809j

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.15261/serdj.21.37

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1088/1468-6996/15/2/025005

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/cplu.201300377

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/ma4024526

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/cctc.201300884

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c3ta14469k

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c3ra46841k

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/cl.130457

Language：English  

DOI： 10.4032/9789814267724

Language：English  

DOI： 10.4032/9789814267724

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/cctc.201300157

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c3nr01828h

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1038/srep01764

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/ma4004117

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1038/pj.2012.145

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1088/1758-5082/5/1/015010

Language：English  

DOI： 10.1002/adma.201204461

Language：English   Publishing type：Research paper (other academic)  

DOI： 10.1149/05002.1919ecst

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.carbon.2012.07.028

Language：English   Publishing type：Research paper (other academic)  

DOI： 10.1149/05002.1309ecst

Language：English   Publishing type：Research paper (other academic)  

DOI： 10.1149/05002.1309ecst

Language：English   Publishing type：Research paper (other academic)  

DOI： 10.1149/05002.1919ecst

Language：English  

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/ja304244g

Language：English  

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/ma3006526

Language：English  

DOI： 10.1166/jnn.2012.6137

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.reactfunctpolym.2011.12.001

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/asia.201100362

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c1py00470k

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/chem.201101669

Language：Others  

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c1nr10635j

Language：English  

DOI： 10.1246/cl.2011.1207

Language：English  

DOI： 10.1002/9781118095331.ch18

Language：Japanese  

Language：Japanese  

Language：English  

DOI： 10.1002/9781118095331.ch18

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/ja2055885

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1007/s10856-011-4394-4

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1143/JJAP.50.098003

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.carbon.2011.04.038

Language：Others  

Design and developments of carbon nanotube composite materials
Carbon nanotubes (CNTs) are a class of conjugated polymer having an ultimate electronic and mechanical structure. Since the discovery of the CNTs, tremendous amount of efforts have been focused for the design and developments of CNT materials. Here, recent topics on the design and developments of CNT composite materials are described. © 2011 The Society of Polymer Science, Japan.

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1143/JJAP.50.070207

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c1nr10079c

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/nn2012767

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c1cc11303h

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1246/cl.2011.470

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DOI： 10.1246/cl.2011.538

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DOI： 10.1021/ja109399f

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DOI： 10.1246/cl.2011.239

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/adfm.201001806

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.carbon.2010.09.043

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c0sm01234c

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DOI： 10.1039/c0jm02744h

Language：Japanese  

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/ja1067367

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/c0nr00145g

Language：English  

DOI： 10.5796/electrochemistry.78.2

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.carbon.2009.07.038

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.synthmet.2009.01.019

Language：Japanese  

Language：Japanese  

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/smll.200801742

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DOI： 10.1002/adfm.200801241

Language：Japanese  

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DOI： 10.1002/adma.200800494

Language：Japanese  

Language：English  

DOI： 10.1295/polymj.PJ2008039

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/adma.200701780

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DOI： 10.1002/chem.200800070

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DOI： 10.1002/adfm.200701257

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DOI： 10.1021/nl080418b

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DOI： 10.1016/j.cplett.2008.02.089

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/adma.200602704

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DOI： 10.1295/koron.64.539

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DOI： 10.1246/cl.2007.692

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/smll.200600679

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DOI： 10.1002/asia.200600371

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DOI： 10.1002/adma.200600070

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DOI： 10.1021/ja050275k

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DOI： 10.1021/ja038088e

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DOI： 10.1021/cm020198h

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DOI： 10.1007/s00289-002-0114-z

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1039/b106278f

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.2494/photopolymer.15.559

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1143/JJAP.41.L105

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.2494/photopolymer.15.643

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DOI： 10.2494/photopolymer.14.275

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DOI： 10.2494/photopolymer.13.339

Language：Japanese   Publishing type：Research paper (scientific journal)  

DOI： 10.1002/9781394256419.ch6

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Responsible for pages：ポリイミドの高機能設計と応用技術、技術情報協会、463-469（2022）   Language：Japanese   Book type：Scholarly book

Responsible for pages：ナノカーボン・ナノセルロースの分散・配向制御技術 野口 徹 監修 シーエムシー出版、pp3-10.   Language：Japanese   Book type：Scholarly book

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Language：Japanese   Book type：Scholarly book

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Event date： 2016.12

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Country：Japan  

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Event date： 2016.11

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Event date： 2016.9

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Event date： 2016.9

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Venue：神奈川大学 横浜キャンパス   Country：Japan  

Event date： 2016.9

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Venue：神奈川大学 横浜キャンパス   Country：Japan  

Event date： 2016.9

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Venue：神奈川大学 横浜キャンパス   Country：Japan  

Event date： 2016.9

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Event date： 2016.9

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Event date： 2016.7

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Event date： 2016.7

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Event date： 2016.5 - 2016.6

Language：English   Presentation type：Oral presentation (general)  

Country：United States  

Event date： 2016.5

Language：Japanese   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2016.5

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：神戸国際会議場・展示場   Country：Japan  

Event date： 2016.5

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：神戸国際会議場・展示場   Country：Japan  

Event date： 2016.4

Language：Japanese   Presentation type：Oral presentation (general)  

Venue：九州大学医学部百年講堂   Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Venue：関西大学   Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Venue：名古屋大学 東山キャンパス   Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Venue：名古屋大学 東山キャンパス   Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Venue：名古屋大学 東山キャンパス   Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Venue：名古屋大学 東山キャンパス   Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Venue：九州大学 伊都キャンパスWPI-I2CNERホール   Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Venue：九州大学 伊都キャンパスWPI-I2CNERホール   Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Venue：九州大学 伊都キャンパスWPI-I2CNERホール   Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Venue：九州大学 伊都キャンパスWPI-I2CNERホール   Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Venue：東京大学 伊藤国際学術研究センター 伊藤謝恩ホール（東京）   Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Venue：東京大学 伊藤国際学術研究センター 伊藤謝恩ホール（東京）   Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Venue：東京大学 伊藤国際学術研究センター 伊藤謝恩ホール（東京）   Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Venue：東京大学 伊藤国際学術研究センター 伊藤謝恩ホール（東京）   Country：Japan  

Event date： 2014.3

Language：Others   Presentation type：Oral presentation (general)  

Venue：東京大学 伊藤国際学術研究センター 伊藤謝恩ホール（東京）   Country：Japan  

Event date： 2014.2

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.2

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.2

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.1

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.1

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.1

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.1

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.1

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.1

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.1

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2014.1

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2013.12

Language：Others   Presentation type：Oral presentation (general)  

Venue：ブルーウェーブイン鹿児島   Country：Japan  

Event date： 2013.12

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2013.12

Language：Others   Presentation type：Oral presentation (general)  

Venue：ブルーウェーブイン鹿児島   Country：Japan  

Event date： 2013.11

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2013.11

Language：Others   Presentation type：Oral presentation (general)  

Venue：東京理科大学   Country：Japan  

Event date： 2013.10

Language：Others   Presentation type：Oral presentation (general)  

Venue：タワーホール船堀   Country：Japan  

Event date： 2013.10

Language：Others   Presentation type：Oral presentation (general)  

Venue：タワーホール船堀   Country：Japan  

Event date： 2013.10

Language：Others   Presentation type：Oral presentation (general)  

Venue：タワーホール船堀   Country：Japan  

Event date： 2013.10

Language：Others   Presentation type：Oral presentation (general)  

Venue：タワーホール船堀   Country：Japan  

Event date： 2013.10

Language：Others   Presentation type：Oral presentation (general)  

Venue：タワーホール船堀   Country：Japan  

Event date： 2013.10

Language：Others   Presentation type：Oral presentation (general)  

Venue：タワーホール船堀   Country：Japan  

Event date： 2013.10

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2013.10

Language：Others   Presentation type：Oral presentation (general)  

Venue：大阪国際会議場   Country：Japan  

Event date： 2013.10

Language：Others   Presentation type：Oral presentation (general)  

Venue：大阪国際会議場   Country：Japan  

Event date： 2013.9

Language：Others   Presentation type：Oral presentation (general)  

Venue：東京工業大学大岡山キャンパス   Country：Japan  

Event date： 2013.9

Language：Others   Presentation type：Oral presentation (general)  

Venue：金沢大学角間キャンパス   Country：Japan  

Event date： 2013.9

Language：Others   Presentation type：Oral presentation (general)  

Venue：金沢大学角間キャンパス   Country：Japan  

Event date： 2013.9

Language：Others   Presentation type：Oral presentation (general)  

Venue：金沢大学角間キャンパス   Country：Japan  

Event date： 2013.9

Language：Others   Presentation type：Oral presentation (general)  

Venue：金沢大学角間キャンパス   Country：Japan  

Event date： 2013.9

Language：Others   Presentation type：Oral presentation (general)  

Venue：金沢大学角間キャンパス   Country：Japan  

Event date： 2013.9

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2013.9

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2013.9

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2013.8

Language：Others   Presentation type：Oral presentation (general)  

Country：Korea, Republic of  

Event date： 2013.8

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2013.8

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2013.8

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2013.8

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2013.8

Language：Others   Presentation type：Oral presentation (general)  

Venue：大阪大学大阪大学会館   Country：Japan  

Event date： 2013.8

Language：Others   Presentation type：Oral presentation (general)  

Venue：大阪大学大阪大学会館   Country：Japan  

Event date： 2013.7

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2013.7

Language：Others   Presentation type：Oral presentation (general)  

Venue：北九州国際会議場   Country：Japan  

Event date： 2013.7

Language：Others   Presentation type：Oral presentation (general)  

Venue：北九州国際会議場   Country：Japan  

Event date： 2013.7

Language：Others   Presentation type：Oral presentation (general)  

Venue：北九州国際会議場   Country：Japan  

Event date： 2013.7

Language：Others   Presentation type：Oral presentation (general)  

Venue：北九州国際会議場   Country：Japan  

Event date： 2013.7

Language：Others   Presentation type：Oral presentation (general)  

Venue：北九州国際会議場   Country：Japan  

Event date： 2013.7

Language：Others   Presentation type：Oral presentation (general)  

Venue：北九州国際会議場   Country：Japan  

Event date： 2013.6

Language：Others   Presentation type：Oral presentation (general)  

Country：Finland  

Event date： 2013.6

Language：Others   Presentation type：Oral presentation (general)  

Country：Korea, Republic of  

Event date： 2013.6

Language：Others   Presentation type：Oral presentation (general)  

Country：Korea, Republic of  

Event date： 2013.6

Language：Others   Presentation type：Oral presentation (general)  

Country：Korea, Republic of  

Event date： 2013.6

Language：Others   Presentation type：Oral presentation (general)  

Country：Korea, Republic of  

Event date： 2013.6

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2013.6

Language：Others   Presentation type：Oral presentation (general)  

Country：Japan  

Event date： 2013.5

Language：Others   Presentation type：Oral presentation (general)  

Venue：京都国際会館   Country：Japan  

Event date： 2013.5

Language：Others   Presentation type：Oral presentation (general)  

Venue：京都国際会館   Country：Japan  

Event date： 2013.5

Language：Others   Presentation type：Oral presentation (general)  

Venue：京都国際会館   Country：Japan  

Event date： 2013.5

Language：Others   Presentation type：Oral presentation (general)  

Venue：京都国際会館   Country：Japan  

Event date： 2013.5

Language：Others   Presentation type：Oral presentation (general)  

Venue：京都国際会館   Country：Japan  

Event date： 2013.5

Language：Others   Presentation type：Oral presentation (general)  

Country：Canada  

Event date： 2013.5

Language：Others   Presentation type：Oral presentation (general)  

Country：Canada  

Event date： 2011.6

Language：Others   Presentation type：Oral presentation (general)  

Country：Korea, Republic of  

Event date： 2011.6

Language：Others  

Venue：神奈川大学   Country：Japan  

Event date： 2011.6

Language：Others  

Country：Japan  

Event date： 2011.6

Language：Others  

Country：Canada  

Event date： 2011.6

Language：Others  

Country：Canada  

Event date： 2011.6

Language：Others  

Country：Canada  

Event date： 2011.6

Language：Others  

Country：Canada