Kyushu University Academic Staff Educational and Research Activities Database
List of Papers
Daiki Murakami Last modified date:2021.11.15

Assistant Professor / Department of Soft Materials Chemistry / Institute for Materials Chemistry and Engineering


Papers
1. T. Ueda, D. Murakami, M. Tanaka, Effect of amount of hydrated water and mobility of hydrated poly(2-methoxyethyl acrylate) on denaturation of adsorbed fibrinogen, JOURNAL OF POLYMER SCIENCE, 10.1002/pol.20210496, 2021.08.
2. M. Yamazaki, Y. Sugimoto, D. Murakami, M. Tanaka, T. Ooya, Effect of Branching Degree of Dendritic Polyglycerols on Plasma Protein Adsorption: Relationship between Hydration States and Surface Morphology, LANGMUIR, 10.1021/acs.langmuir.1c01003, 37, 28, 8534-8543, 2021.07.
3. T. Kanamaru, M. Araki, R. Takahashi, S. Fujii, T. Shikata, D. Murakami, M. Tanaka, K. Sakurai, The first observation of the hydration layer around polymer chain by scattering and its relationship to thromboresistance; dilute solution properties of PMEA in THF/water, The Journal of Physical Chemistry B, 2021.06.
4. Rubaiya Anjum, Kei Nishida, Haruka Matsumoto, Daiki Murakami, Shingo Kobayashi, Takahisa Anada, Masaru Tanaka , Attachment and Growth of Fibroblast Cells on Poly(2-methoxyethyl acrylate) Analog Polymers as Coating Materials, Coatings , 10.3390/coatings11040461, 11, 4, 461, 2021.04.
5. Koguchi R., Jankova K., Hayasaka Y., Kobayashi D., Amino Y., Miyajima T, Kobayashi S., Murakami D., Yamamoto K., Tanaka M. , Understanding the Effect of Hydration on the Bio-inert Properties of 2‑Hydroxyethyl Methacrylate Copolymers with Small Amounts of Amino- or/and Fluorine-Containing Monomers.
, ACS Biomaterials Science & Engineering, 6, 2855-2866, 2020.04.
6. Mayuko Watanabe, Yukiko Tanaka, Daiki Murakami, Masaru Tanaka, Mika Kawai, Tetsu Mitsumata, Optimal plasticizer content for magnetic elastomers used for cell culture substrate, Chemistry Letters, 10.1246/cl.190929, 49, 3, 280-283, 2020.01, The effect of a magnetic field on the water contact angle for magnetic elastomers with various plasticizer contents was investigated. At a plasticizer content below 60 wt %, there was no change in contact angle when a magnetic field of 370 mT was applied. For magnetic elastomers with a plasticizer content above 65 wt %, a change in contact angle of approximately 8.0° was observed (e.g. 38° at 0 mT and 46° at 370 mT for 65 wt % plasticizer content). Dynamic viscoelastic measurements showed that magnetic elastomers with a plasticizer content below 60 wt % demonstrate the magnetorheological (MR) effect with changes in storage modulus higher than 31 MPa. Atomic force microscopy for magnetic elastomer with a plasticizer content of 50 wt % revealed that the averaged Young’s modulus was 233 « 52.1 kPa at 370 mT and 83 « 5.4 kPa at 0 mT, indicating that the MR effect is caused not only on a bulk but also on a mesoscopic scale. Magnetic elastomers specialized for cell culture were obtained by optimizing the plasticizer content, that exhibit the MR effect with changes in storage modulus from 1.3.
7. Katja Jankova, Irakli Javakhishvili, Shingo Kobayashi, Ryohei Koguchi, Daiki Murakami, Toshiki Sonoda, Masaru Tanaka, Hydration States and Blood Compatibility of Hydrogen-Bonded Supramolecular Poly(2-methoxyethyl acrylate), ACS Applied Bio Materials, 10.1021/acsabm.9b00363, 2, 10, 4154-4161, 2019.10, The practical use of the viscous liquid polymer, poly(2-methoxyethyl acrylate) (PMEA), was expanded from thin films with excellent blood compatibility to thick coatings and free-standing films without essentially sacrificing its blood compatibility. This was undertaken by creating multiple hydrogen-bonding polymer networks by introducing a functional methacrylic monomer bearing a 6-methyl-2-ureido-4[1H]-pyrimidone group in the PMEA backbone via free radical copolymerization. The hydrogen-bonded PMEA (H-PMEA) contained about 6 mol % of the functional monomer in the copolymer. These functional monomers as physical cross-links are distributed in the PMEA matrix with a Tg of -35 °C, making H-PMEA a solid rubber-like material with recoverable tensile strain. Additionally, mechanical tests revealed its tensile strength, and thermogravimetric analyses confirmed its higher thermostability. The dry and hydration states of H-PMEA were assessed by differential scanning calorimetry, contact angle, and atomic force microscopy measurements. Comparison with viscous PMEA was made. For the first time, we included PVC alongside PET, the surface we usually use as a negative control, in the platelet adhesion test with human blood, and found out that 1.5 times more platelets adhered onto the PVC surface than onto the PET surface, while H-PMEA proved to have a clear edge. Thus, H-PMEA may serve as a suitable replacement for polymers in products contacting blood as it shows potential for making free-standing films, thick coatings, implants, and articles with various geometries for the medicinal industry..
8. Daiki Murakami, Yuto Segami, Tomoya Ueda, Masaru Tanaka, Control of interfacial structures and anti-platelet adhesion property of blood-compatible random copolymers, JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION, 10.1080/09205063.2019.1680930, 2019.10.
9. Murakami D., Kitahara Y., Kobayashi S., Tanaka M., Thermosensitive Polymer Biocompatibility Based on Interfacial Structure at Biointerface, ACS BIOMATERIALS SCIENCE & ENGINEERING, 10.1021/acsbiomaterials.8b00081, 4, 5, 1591-1597, 2018.05.
10. Murakami D., Kobayashi S., Tanaka M., Interfacial Structures and Fibrinogen Adsorption at Blood Compatible Polymer/Water Interfaces, ACS BIOMATERIALS SCIENCE & ENGINEERING, 10.1021/acsbiomaterials.6b00415, 2, 12, 2122-2126, 2016.12.
11. Hoshino T., Nojima S., Sato M., Hirai T., Higaki Y., Fujinami S., Murakami D., Ogawa S., Jinnai H., Takahara A., Takata M., Observation of constraint surface dynamics of polystyrene thin films by functionalization of a silsesquioxane cage, POLYMER, 10.1016/j.polymer.2016.08.040, 105, 487-499, 2016.11.
12. Murakami D., Norizoe Y., Higaki Y., Takahara A., Jinnai H., Direct Characterization of In-Plane Phase Separation in Polystyrene Brush/Cyclohexane System, Macromolecules, 10.1021/acs.macromol.6b00151, 49, 13, 4862-4866, 2016.06.
13. Higaki Y., Kobayashi M., Murakami D., Takahara A., Anti-fouling behavior of polymer brush immobilized surfaces, POLYMER JOURNAL, 10.1038/pj.2015.137, 48, 4, 325-331, 2016.04.
14. Murakami D., Kobayashi M., Higaki Y., Jinnai H., Takahara A., Swollen structure and electrostatic interactions of polyelectrolyte brush in aqueous solution, Polymer, 10.1016/j.polymer.2016.04.041, 2016.02.
15. Murakami D., Takenaka A., Kobayashi M., Jinnai H., Takahara A., Measurement of Electrostatic Interaction between Polyelectrolyte Brush Surfaces by Optical Tweezers, 29, 16093-16097, 2014.06.
16. Higuchi T., Murakami D., Nishiyama H., Suga M., Takahara A., Jinnai H., Nanometer-scale Real-space Observation and Material Processing for Polymer Materials under Atmospheric Pressure: Application of Atmospheric Scanning Electron Microscopy, ELECTROCHEMISTRY, 10.5796/electrochemistry.82.359, 82, 5, 359-363, 2014.05.
17. Murakami D., Jinnai H., Takahara A., Wetting Transition from the Cassie-Baxter State to the Wenzel State on Textured Polymer Surfaces, LANGMUIR, 10.1021/la4049067, 30, 8, 2061-2067, 2014.03.
18. Hoshino T., Murakami D., Tanaka Y., Takata M., Jinnai H., Takahara A., Dynamical crossover between hyperdiffusion and subdiffusion of polymer-grafted nanoparticles in a polymer matrix, PHYSICAL REVIEW E, 10.1103/PhysRevE.88.032602, 88, 3, 2013.09.
19. Shinohara T., Shirahase T., Murakami D., Hoshino T., Kikuchi M., Koike J., Horigome M., Masunaga H., Ogawa H., Takahara A., Precise and Non-destructive Characterization of 'Buried' Nano-structure in Polymer Thin Film by Synchrotron Radiation Ultra-Small Angle X-ray Scattering, Polymer Journal, 415, 307-312, 2013.06.
20. Hoshino T., Murakami D., Ito K., Tanaka Y., Sasaki S., Takata M., Jinnai H., Takahara A., Thermal gradient effect on the dynamical behavior of nanoparticles observed using X-ray photon correlation spectroscopy, POLYMER JOURNAL, 10.1038/pj.2012.193, 45, 1, 94-99, 2013.01.
21. Murakami D., Kobayashi M., Moriwaki T., Ikemoto Y., Jinnai H., Takahara A., Spreading and Structuring of Water on Superhydrophilic Polyelectrolyte Brush Surfaces, LANGMUIR, 10.1021/la304697q, 29, 4, 1148-1151, 2013.01.
22. Yano T., Higaki Y., Tao D., Murakami D., Kobayashi M., Ohta N., Koike J., Horigome M., Masunaga H., Ogawa H., Ikemoto Y., Moriwaki T., Takahara A., Orientation of poly(vinyl alcohol) nanofiber and crystallites in non-woven electrospun nanofiber mats under uniaxial stretching, POLYMER, 10.1016/j.polymer.2012.07.067, 53, 21, 4702-4708, 2012.09.
23. Hoshino T., Kikuchi M., Murakami D., Harada Y., Mitamura K., Ito K., Tanaka Y., Sasaki S., Takata M., Jinnai H., Takahara A., X-ray photon correlation spectroscopy using a fast pixel array detector with a grid mask resolution enhancer, Journal of Synchrotron Radiation, 19, 6, 988-993, 2012.09.
24. Kobayashi M., Terayama Y., Yamaguchi H., Terada M., Murakami D., Ishihara K., Takahara A., Wettability and Antifouling Behavior on the Surfaces of Superhydrophilic Polymer Brushes, Langumuir, 28, 7212-7222, 2012.05.
25. Murakami D., Fukuda T., Matsubara H., Aratono M., Takiue T., Molecular Orientation and Miscibility of Fluorinated -Alkanediol and Alcohol at the Hexane/Water Interface, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 354, 205-209, 2010.06.
26. Murakami D., Langer U., Khattari Z., Fischer Th. M., Fluorinated Langmuir Monolayers Are More Viscous than Non-Fluorinated Monolayers, JOURNAL OF PHYSICAL CHEMISTRY B, 10.1021/jp100629p, 114, 16, 5376-5379, 2010.04.
27. Takiue T., Fukuda T., Murakami D., Sakamoto H., Matsubara H., Aratono M., Molecular Orientation and Multilayer Formation in the Adsorbed Film of 1H,1H,10H,10H-Perfluorodecane-1,10-diol at the Hexane/water Interface; Pressure Effect on the Adsorption of Fluoroalkane-diol, JOURNAL OF PHYSICAL CHEMISTRY B, 10.1021/jp9056434, 113, 44, 14667-14673, 2009.11.
28. Takiue T., Nakamura F., Murakami D., Fukuda T., Shuto A., Matsubara H., Aratono M., Molecular Orientation and Multilayer Formation of 1H,1H,8H,8H-Perfluorooctane-1,8-diol at the Air/Water Interface, JOURNAL OF PHYSICAL CHEMISTRY B, 10.1021/jp900375q, 113, 18, 6305-6310, 2009.05.
29. Aratono M., Murakami D., Matsubara H., Takiue T., Phase Transition and Domain Formation in the Gibbs Adsorbed Films of Long-Chain Alcohols, JOURNAL OF PHYSICAL CHEMISTRY B, 10.1021/jp9001803, 113, 18, 6347-6352, 2009.05.
30. Aratono M., Shimamoto K., Onohara A., Murakami D., Tanida H., Watanabe I., Ozeki T., Matsubara H. Takiue T., Adsorption of 1-Decyl-3-methylimidazolium Bromide and Solvation Structure of Bromide at the Air/Water Interface, ANALYTICAL SCIENCES, 24, 10, 1279-1283, 2008.10.
31. Takiue T., Fukuda T., Murakami D., Inomata H., Sakamoto H., Matsubara H., Aratono M., Molecular orientation and multilayer formation in the adsorbed film of 1H,1H,10H,10H-perfluorodecane-1,10-diol at the hexane/water interface; Temperature effect on the. adsorption of fluoroalkane-diol, JOURNAL OF PHYSICAL CHEMISTRY C, 10.1021/jp077456o, 112, 13, 5078-5084, 2008.04.
32. Murakami D., Fukuta T., Matsubara H., Aratono M., Takiue T., Effect of the partial hydrogenation of hydrophobic chains on the mixing of fluoroalkanols in an adsorbed film at the hexane/water interface, JOURNAL OF PHYSICAL CHEMISTRY C, 10.1021/jp076108j, 112, 12, 4564-4568, 2008.03.
33. Murakami D., Fukuta T., Matsubara H., Aratono M., Takiue T., Effect of omega-hydrogenation on the adsorption of fluorononanols at the hexane/water interface: Miscibility in the adsorbed film of fluorononanols, JOURNAL OF PHYSICAL CHEMISTRY B, 10.1021/jp0581227, 109, 47, 22366-22370, 2005.12.
34. Takiue T., Hirose D., Murakami D., Sakamoto H., Matsubara H., Aratono M., Effect of omega-hydrogenation on the adsorption of fluorononanols at the hexane/water interface: Pressure effect on the adsorption of fluorononanols, JOURNAL OF PHYSICAL CHEMISTRY B, 10.1021/jp0581375, 109, 34, 16429-16434, 2005.09.
35. Takiue T., Murakami D., Tamura T., Sakamoto H., Matsubara H., Aratono M., Effect of w-Hydrogenation on the Adsorption of Fluorononanols at the Hexane/Water Interface: Temperature Effect on the Adsorption of Fluorononanols, Journal of Physical Chemistry B, 2005.04.
36. Shinohara T., Shirahase T., Murakami D., Hoshino T., Kikuchi M., Koike J., Horigome M., Masunaga H., Ogawa H., Takahara A., Characterization of Surface Microstructures on Bio-based Polymer Film Fabricated with Nano-imprint Lithography by Synchrotron Radiation Small Angle X-ray Scattering, BURIED INTERFACE SCIENCES WITH X-RAYS AND NEUTRONS 2010, 10.1088/1757-899X/24/1/012004, 24.