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Takuma Yasuda Last modified date:2021.10.25

Professor / Advnced Electronics Materials Research Division
Inamori Frontier Research Center

Graduate School
Undergraduate School

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Academic Degree
Dr. Eng.
Field of Specialization
Functional materials chemistry; Physical organic chemistry; Organic electronics
ORCID(Open Researcher and Contributor ID)
Outline Activities
Our research group is promoting the fundamental and application studies on functional organic materials for advancement of novel materials science. We are advancing the study aiming at exploration of various functions of materials, such as emission, transport, conversion, and response, and their application for contributing the next-generation materials and device science.
Research Interests
  • Molecular Organization of π-Materials for Charge Transport Functionality
    keyword : Molecular assembly; Charge transport; Mobility; Organic transistor
  • Photovoltaics Based on π-Materials toward Renewable Energy Technology
    keyword : Photovoltaics; Organic solar cell, Nanostructure; Renewable energy
  • High-Efficiency Luminescent π-Materials and OLED Application
    keyword : Luminescence; Organic synthesis; Photophysical property; Organic light-emitting diode; Electroluminescence
  • Stimuli and Environment Responsive Smart π-Materials
    keyword : Smart material; Stimuli responsive molecules
  • Liquid-Crystalline Semiconductors with Ordered Nanostructures
    keyword : Liquid crystal; Semiconductor; Self-organization; Organic device
Academic Activities
1. Takuma Yasuda and Takashi Kato, ”Advanced Systems of Supramolecular Liquid Crystals”
Supramolecular Soft Matter: Applications in Materials and Organic Electronics (Ed: Takashi Nakanishi)
, Wiley, 2011.10.
1. Takashi Kato, Yoshiko Shoji, Masafumi Yoshio, Shogo Yamane, and Takuma Yasuda, Functional soft Materials: Nanostructured Liquid Crystals and Self-Assembled Fibrous Aggregates, J. Synth. Org. Jpn. 2010, 68, in press, 2011.10.
2. Takashi Kato, Takuma Yasuda, Yuko Kamikawa, and Masafumi Yoshio, Self-Assembly of Functional Columnar Liquid Crystals, Chem. Commun. 2009, 729–739., 2009.01.
3. Takakazu Yamamoto, Isao Yamaguchi, and Takuma Yasuda, PAEs with Heteroaromatic Rings, Adv. Polym. Sci. 2005, 177, 181–208., 2005.05.
1. Tatsuya Mori, Yuji Yamaguchi, So Kawata, and Takuma Yasuda, An S-Shaped Thienoacene Semiconductor Forming Unique Cruciform Lamellar Packing via a 2D Interaction Network of π-Stacking and Chalcogen Bonding, J. Mater. Chem. C 2021, 9, 13090-13093., 10.1039/D1TC03871K, 2021.09, [URL].
2. In Seob Park, Hyukgi Min, Jong Uk Kim, and Takuma Yasuda, Deep-Blue OLEDs Based on Organoboron–Phenazasiline-Hybrid Delayed Fluorescence Emitters Concurrently Achieving 30% External Quantum Efficiency and Small Efficiency Roll-Off, Adv. Optical Mater. 2021, 9, 2101282., 10.1002/adom.202101282, 2021.09, [URL].
3. Minlang Yang, So Shikita, Hyukgi Min, In Seob Park, Hiromoto Shibata, Natsuki Amanokura, and Takuma Yasuda, Wide-Range Color Tuning of Narrowband Emissions in Multi-Resonance Organoboron Delayed Fluorescence Materials through Rational Imine/Amine Functionalization, Angew. Chem. Int. Ed. 2021, 60, 23142-23147., 10.1002/anie.202109335, 2021.08, [URL].
4. Masakazu Nagata, Hyukgi Min, Erika Watanabe, Hiroki Fukumoto, Yoshiyuki Mizuhata, Norihiro Tokitoh, Tomohiro Agou, and Takuma Yasuda, Fused-Nonacyclic Multi-Resonance Delayed Fluorescence Emitter Based on Ladder-Thiaborin Exhibiting Narrowband Sky-Blue Emission with Accelerated Reverse Intersystem Crossing, Angew. Chem. Int. Ed. 2021, 60, 20280-20285., 10.1002/anie.202108283, 2021.07, [URL].
5. So Shikita, Go watanabe, Dai Kanouchi, Junya Saito, and Takuma Yasuda, Alternating Donor–Acceptor π-Conjugated Macrocycle Exhibiting Efficient Thermally Activated Delayed Fluorescence and Spontaneous Horizontal Molecular Orientation, Adv. Photonics Res. 2021, 2, 2100021., 10.1002/adpr.202100021, 2021.03, [URL].
6. Naoya Aizawa, Akinobu Matsumoto, and Takuma Yasuda, Thermal Equilibration between Singlet and Triplet Excited States in Organic Fluorophore for Submicrosecond Delayed Fluorescence, Science Adv. 2021, 7, eabe5769., 10.1126/sciadv.abe5769, 2021.02, [URL].
7. Hyukgi Min, In Seob Park, and Takuma Yasuda, cis-Quinacridone-Based Delayed Fluorescence Emitters: Seemingly Old but Renewed Functional Luminogens, Angew. Chem. Int. Ed. 2021, 60, 7643-7648., 10.1002/anie.202016914, 2021.01, [URL].
8. Tatsuya Mori and Takuma Yasuda, U-Shaped Heteroacenes Embedded with Heavy Chalcogen Atoms: Unique Bilayer Self-Organization of Crooked π-Cores Enabling Efficient Charge Transport, Adv. Electron. Mater. 2021, 7, 2001052., 10.1002/aelm.202001052, 2021.01, [URL].
9. In Seob Park, Hyukgi Min, and Takuma Yasuda, Phenyl-Triggered Photophysical Switching between Normal Fluorescence and Delayed Fluorescence in Phthalonitrile-Based Luminophores, Aggregate 2021, 2, 145-150., 10.1002/agt2.14, 2021.01, [URL].
10. Minlang Yang, In Seob Park, and Takuma Yasuda, Full-Color, Narrowband, and High-Efficiency Electroluminescence from Boron and Carbazole Embedded Polycyclic Heteroaromatics, J. Am. Chem. Soc. 2020, 142, 19468-19472., 10.1021/jacs.0c10081, 2020.11, [URL].
11. Taiki Menda, Tatsuya Mori, and Takuma Yasuda, Regiocontrolled Synthesis of Ester-Functionalized Polythiophenes via Direct Arylation Polycondensation, Polym. J. 2021, 53、403-408., 10.1038/s41428-020-00421-7, 2020.12, [URL].
12. Yuji Yamaguchi, Yuka Kojiguchi, So Kawata, Tatsuya Mori, Kazuo Okamoto, Masanori Tsutsui, Tomoyuki Koganezawa, Hiroshi Katagiri, and Takuma Yasuda, Solution-Processable Organic Semiconductors Featuring S-Shaped Dinaphthothienothiophene (S-DNTT): Effects of Alkyl Chain Length on Self-Organization and Carrier Transport Properties, Chem. Mater. 2020, 32, 5350-5360., 10.1021/acs.chemmater.0c01740, 2020.05, [URL].
13. Minlang Yang, In Seob Park, Yasuhiro Miyashita, Katsunori Tanaka, Takuma Yasuda, Mechanochromic Delayed Fluorescence Switching in Propeller‐Shaped Carbazole–Isophthalonitrile Luminogens with Stimuli‐Responsive Intramolecular Charge‐Transfer Excited States, Angew. Chem. Int. Ed. 2020, 59, 13955-13961., 10.1002/anie.202005584, 2020.05, [URL].
14. Tatsuya Mori, Hideaki Komiyama, Takahiro Ihikawa, Takuma Yasuda, A Liquid-Crystalline Semiconducting Polymer Based on Thienylene–Vinylene–Thienylene: Enhanced Hole Mobilities by Mesomorphic Molecular Ordering and Thermoplastic Shape-Deformable Characteristics, Polym. J. 2020, 52, 313-321., 10.1038/s41428-019-0282-4, 2020.02, [URL].
15. Hyukgi Min, In Seob Park, Takuma Yasuda, Dipolar and Quadrupolar Luminophores Based on 1,8‐Dimethylcarbazole−Triazine Conjugates for High‐Efficiency Blue Thermally Activated Delayed Fluorescence OLEDs, ChemPhotoChem 2020, 4, 82-88., 10.1002/cptc.201900186, 2019.10, [URL].
16. Tomohiro Agou, Kyohei Matsuo, Rei Kawano, In Seob Park, Takaaki Hosoya, Hiroki Fukumoto, Toshio Kubota, Yoshiyuki Mizuhata, Norihiro Tokitoh, Takuma Yasuda, Pentacyclic Ladder-Heteraborin Emitters Exhibiting High-Efficiency Blue Thermally Activated Delayed Fluorescence with an Ultrashort Emission Lifetime, ACS Mater. Lett. 2020, 2, 28-34., 10.1021/acsmaterialslett.9b00433, 2019.11, [URL].
17. Kyohei Matsuo, Takuma Yasuda, Blue Thermally Activated Delayed Fluorescence Emitters Incorporating Acridan Analogues with Heavy Group 14 Elements for High-Efficiency Doped and Non-Doped OLEDs, Chem. Sci. 2019, 10, 10687-10697., 10.1039/C9SC04492B, 2019.10, [URL].
18. Ryota Arai, Seiichi Furukawa, Narumi Sato, Takuma Yasuda, Organic Energy-Harvesting Devices Achieving Power Conversion Efficiencies over 20% under Ambient Indoor Lighting, J. Mater. Chem. A 2019, 7, 20187-20192., 10.1039/C9TA06694B, 2019.08, [URL].
19. Seiichi Furukawa, Takuma Yasuda, Strategic End-Halogenation of π-Conjugated Small Molecules Enabling Fine Morphological Control and Enhanced Performance of Organic Solar Cells , J. Mater. Chem. A 2019, 7, 14806-14815., 10.1039/C9TA03869H, 2019.05, [URL].
20. Ryota Arai, Seiichi Furukawa, Yu Hidaka, Hideaki Komiyama, Takuma Yasuda, High-Performance Organic Energy-Harvesting Devices and Modules for Self-Sustainable Power Generation under Ambient Indoor Lighting Environments, ACS Appl. Mater. Interfaces 2019, 11, 9259-9264., 10.1021/acsami.9b00018, 2019.02, [URL].
21. Kyohei Matsuo, Takuma Yasuda, Boronate- and Borinate-Based π-Systems for Blue Thermally Activated Delayed Fluorescence Materials, Chem. Commun. 2019, 55, 2501-2504., 10.1039/C8CC10282A, 2019.02, [URL].
22. Seiichi Furukawa, Hideaki Komiyama, Naoya Aizawa, Takuma Yasuda, High-Crystallinity π-Conjugated Small Molecules Based on Thienylene-Vinylene-Thienylene: Critical Role of Self-Organization in Photovoltaic, Charge-Transport, and Morphological Properties, ACS Appl. Mater. Interfaces 2018, 10, 42756-42765., 10.1021/acsami.8b17056, 2018.11, [URL].
23. Kohei Isayama, Naoya Aizawa, Jun Yun Kim, Takuma Yasuda, Modulating Photo- and Electroluminescence in a Stimuli-Responsive π-Conjugated Donor–Acceptor Molecular System, Angew. Chem. Int. Ed. 2018, 57, 11982-11986., 10.1002/anie.201806863, 2018.09, [URL].
24. In Seob Park, Kyohei Matsuo, Naoya Aizawa, Takuma Yasuda, High-Performance Dibenzoheteraborin-Based Thermally Activated Delayed Fluorescence Emitters: Molecular Architectonics for Concurrently Achieving Narrow-Band Emission and Efficient Triplet–Singlet Spin Conversion, Adv. Funct. Mater. 2018, 28, 1802031., 10.1002/adfm.201802031, 2018.08, [URL].
25. Hideaki Komiyama, Takahiro To, Seiichi Furukawa, Yu Hidaka, Woong Shin, Takahiro Ichikawa, Ryota Arai, Takuma Yasuda, Oligothiophene–Indandione-Linked Narrow-Band Gap Molecules: Impact of π-Conjugated Chain Length on Photovoltaic Performance, ACS Appl. Mater. Interfaces 2018, 10, 11083-11093., 10.1021/acsami.8b01233, 2018.05.
26. Jiyoung Lee, Naoya Aizawa, Takuma Yasuda, Molecular Engineering of Phosphacycle-Based Thermally Activated Delayed Fluorescence Materials for Deep-Blue OLEDs, J. Mater. Chem. C 2018, 6, 3578-3583., 10.1039/C7TC05709A, 2018.05.
27. Ryuhei Furue, Kyohei Matsuo, Yasuhiko Ashikari, Hirohito Ooka, Natsuki Amanokura, Takuma Yasuda, Highly Efficient Red–Orange Delayed Fluorescence Emitters Based on Strong π-Accepting Dibenzophenazine and Dibenzoquinoxaline Cores: Toward a Rational Pure-Red OLED Design, Adv. Optical Mater. 2018, 6, 1701147., 10.1002/adom.201701147, 2018.05.
28. Jiyoung Lee, Naoya Aizawa, Takuma Yasuda, Isobenzofuranone- and Chromone-Based Blue Delayed Fluorescence Emitters with Low Efficiency Roll-Off in Organic Light-Emitting Diodes , Chem. Mater. 2017, 29, 8012-8020., 10.1021/acs.chemmater.7b03371, 2017.05.
29. Naoya Aizawa, So Shikita, Takuma Yasuda, Spin-Dependent Exciton Funneling to a Dendritic Fluorophore Mediated by a Thermally Activated Delayed Fluorescence Material as an Exciton-Harvesting Host, Chem. Mater. 2017, 29, 7014-7022., 10.1021/acs.chemmater.7b02606, 2017.05.
30. Kyohei Matsuo, Takuma Yasuda, Enhancing Thermally Activated Delayed Fluorescence Characteristics by Intramolecular B–N Coordination in a Phenylpyridine-Containing Donor–Acceptor π-System, Chem. Commun. 2017, 53, 8723-8726., 10.1039/C7CC04875K, 2017.05.
31. Tatsuya Mori, Tatsuya Oyama, Hideaki Komiyama, Takuma Yasuda, Solution-Grown Unidirectionally Oriented Crystalline Thin Films of a U-Shaped Thienoacene-Based Semiconductor for High-Performance Organic Field-Effect Transistors, J. Mater. Chem. C 2017, 5, 5872-5876., 10.1039/C7TC01836C, 2017.05.
32. Tatsuya Oyama, Yu Seok Yang, Kyohei Matsuo, Takuma Yasuda, Effects of Chalcogen Atom Substitution on the Optoelectronic and Charge-Transport Properties in Picene-Type π-Systems, Chem. Commun. 2017, 53, 3814-3817., 10.1039/C7CC01292F, 2017.05.
33. Hiroki Tachibana, Naoya Aizawa, Yu Hidaka, Takuma Yasuda, Tunable Full-Color Electroluminescence from All-Organic Optical Upconversion Devices by Near-Infrared Sensing, ACS Photonics 2017, 4, 223-227., 10.1021/acsphotonics.6b00964, 2017.05.
34. In Seob Park, Hongwook Seo, Hiroki Tachibana, Joung Uk Kim, Jinbo Zhang, Se Mo Son, Takuma Yasuda, Cyclohexane-Coupled Bipolar Host Materials with High Triplet Energies for Organic Light-Emitting Diodes Based on Thermally Activated Delayed Fluorescence, ACS Appl. Mater. Interfaces 2017, 9, 2693-2700., 10.1021/acsami.6b13002, 2017.05.
35. Jiyoung Lee, In Seob Park, Takuma Yasuda, Thermally Activated Delayed Fluorescence Properties of Regioisomeric Xanthone-Based Twisted Intramolecular Charge-Transfer Luminophores, Bull. Chem. Soc. Jpn. 2017, 90, 231-236., 10.1246/bcsj.20160380, 2017.05.
36. Jiyoung Lee, Naoya Aizawa, Masaki Numata, Chihaya Adachi, Takuma Yasuda, Versatile Molecular Functionalization for Inhibiting Concentration Quenching of Thermally Activated Delayed Fluorescence, Adv. Mater. 2017, 29, 1604856., 10.1002/adma.201604856, 2017.05.
37. In Seob Park, Hideaki Komiyama, Takuma Yasuda, Pyrimidine-Based Twisted Donor–Acceptor Delayed Fluorescence Molecules: A New Universal Platform for Highly Efficient Blue Electroluminescence, Chem. Sci. 2017, 8, 953-960., 10.1039/C6SC03793C, 2017.05.
38. Naoya Aizawa, Chao-Jen Tsou, In Seob Park, Takuma Yasuda, Aggregation-Induced Delayed Fluorescence from Phenothiazine-Containing Donor–Acceptor Molecules for High-Efficiency Non-Doped Organic Light-Emitting Diodes, Polym. J. 2017, 49, 197-202., 10.1038/pj.2016.82, 2017.05.
39. Seiichi Furukawa, Hideaki Komiyama, Takuma Yasuda, Controlling Open-Circuit Voltage in Organic Solar Cells by Terminal Fluoro-Functionalization of Narrow-Bandgap π-Conjugated Molecules, J. Phys. Chem. C 2016, 120, 21235-21241., 10.1021/acs.jpcc.6b06758, 2016.05.
40. In Seob Park, Jiyoung Lee, Takuma Yasuda, High-Performance Blue Organic Light-Emitting Diodes with 20% External Quantum Efficiency Based on Pyrimidine-Containing Thermally Activated Delayed Fluorescence Emitters, J. Mater. Chem. C 2016, 4, 7911-7916., 10.1039/C6TC02027E, 2016.05.
41. Ryuhei Furue, Takuro Nishimoto, In Seob Park, Jiyoung Lee, Takuma Yasuda, Aggregation-Induced Delayed Fluorescence Based on Donor/Acceptor-Tethered Janus Carborane Triads: Unique Photophysical Properties for Non-Doped OLEDs, Angew. Chem. Int. Ed. 2016, 55, 7171-7175., 10.1002/anie.201603232, 2016.03.
42. Sae Youn Lee, Chihaya Adachi, Takuma Yasuda, High-Efficiency Blue Organic Light-Emitting Diodes Based on Thermally Activated Delayed Fluorescence from Phenoxaphosphine and Phenoxathiin Derivatives, Adv. Mater. 2016, 28, 4626-4631., 10.1002/adma.201506391, 2016.03.
43. Sae Youn Lee, Takuma Yasuda, Hideaki Komiyama, Jiyoung Lee, Chihaya Adachi, Thermally Activated Delayed Fluorescence Polymers for Efficient Solution-Processed Organic Light-Emitting Diodes, Adv. Mater. 2016, 28, 4019-4024., 10.1002/adma.201505026, 2016.03.
44. In Seob Park, Sae Youn Lee, Chihaya Adachi, Takuma Yasuda, Full-Color Delayed Fluorescence Materials Based on Wedge-Shaped Phthalonitriles and Dicyanopyrazines: Systematic Design, Tunable Photophysical Properties, and OLED Performance, Adv. Funct. Mater. 2016, 26, 1813-1821., 10.1002/adfm.201505106, 2016.03.
45. In Seob Park, Masaki Numata, Chihaya Adachi, Takuma Yasuda, A Phenazaborin-Based High-Efficiency Blue Delayed Fluorescence Material, Bull. Chem. Soc. Jpn. 2016, 89, 375-377., 10.1246/bcsj.20150399, 2016.03.
46. Masaki Numata, Takuma Yasuda, Chihaya Adachi, High Efficiency Pure Blue Thermally Activated Delayed Fluorescence Molecules Having 10H-Phenoxaborin and Acridan Units, Chem. Commun. 2015, 51, 9443-9446., 2015.04.
47. Qisheng Zhang, Daniel Tsang, Hirokazu Kuwabara, Yasuhiro Hatae, Bo Li, Takehiro Takahashi, Sae Youn Lee, Takuma Yasuda, Chihaya Adachi, Nearly 100% Internal Quantum Efficiency in Undoped Electroluminescent Devices Employing Pure Organic Emitters, Adv. Mater. 2015, 27, 2096–2100., 2015.04.
48. Jiyoung Lee, Katsuyuki Shizu, Hiroyuki Tanaka, Hajime Nakanotani, Takuma Yasuda, Hironori Kaji, Chihaya Adachi, Controlled Emission Color and Singlet-Triplet Energy Gap of Dihydrophenazine-Based Thermally Activated Delayed Fluorescence Emitters, J. Mater. Chem. C 2015, 4, 2175–2181., 2015.04.
49. Woong Shin, Takuma Yasuda, Yu Hidaka, Go Watanabe, Ryota Arai, Keiro Nasu, Takahiro Yamaguchi, Wakako Murakami, Kengo Makita, CHIHAYA ADACHI, pi-Extended Narrow-Bandgap Diketopyrrolopyrrole-Based Oligomers for Solution-Processed Inverted Organic Solar Cells, Adv. Energy Mater. 2014, 4, 1400879., 2014.04.
50. Sae Youn Lee, Takuma Yasuda, Yu Seok Yang, Qisheng Zhang, CHIHAYA ADACHI, Luminous Butterflies: Efficient Exciton Harvesting by Benzophenone Derivatives for Full-Color Delayed Fluorescence OLEDs, Angew. Chem. Int. Ed. 2014, 53, 6402–6406., 2014.04.
51. Yu Seok Yang, Takuma Yasuda, Hayato Kakizoe, Hiroyuki Mieno, Hiori Kino, Yoshitaka Tateyama, CHIHAYA ADACHI, High Performance Organic Field-Effect Transistors Based on Single-Crystal Microribbons and Microsheets of Solution-Processed Dithieno[3,2-b:2',3'-d]thiophene Derivatives, Chem. Commun. 2013, 49, 6483-6485. , 2013.06.
52. Woong Shin, Takuma Yasuda, Go Watanabe, Yu Seok Yang, CHIHAYA ADACHI, Self-Organizing Mesomorphic Diketopyrrolopyrrole Derivatives for Efficient Solution-Processed Organic Solar Cells, Chem. Mater. 2013, 25, 2549-2556., 2013.06.
53. Jun Yun Kim, Yasuda Takuma, Yu Seok Yang, ADACHI CHIHAYA, Bifunctional Star-Burst Amorphous Molecular Materials for OLEDs: Achieving Highly Efficient Solid-State Luminescence and Carrier Transport Induced by Spontaneous Molecular Orientation, Adv. Mater. 2013, 25, 2666-2671., 2013.03.
54. Yu Seok Yang, Yasuda Takuma, ADACHI CHIHAYA, Organic Single-Crystal Transistors Based on pi-Extended Heteroheptacene Microribbons, Bull. Chem. Soc. Jpn. 2012, 85, 1186-1191., 85, 2012.10.
55. Ryosuke Kondo, Takuma Yasuda,* Yu Seok Yang, Jun Yun Kim, and Chihaya Adachi*, Highly Luminescent pi-Conjugated Dithienometalloles: Photophysical Properties and Their Application in Organic Light-Emitting Diodes, J. Mater. Chem. 2012, 22, 16810-16816, 10.1039/c2jm33526c, 22, 16810-16816, 2012.07.
56. Takuma Yasuda, Tomohiro Shimizu, Feng Liu, Goran Ungar, and Takashi Kato, Electro-Functional Octupolar π-Conjugated Columnar Liquid Crystals, J. Am. Chem. Soc. 2011, 133, 13437-13444., 133, 13437-13444, 2011.11.
57. Takuma Yasuda, Kana Tanabe, Toru Tsuji, Karla K. Coti, Ivan Aprahamian, J. Fraser Stoddart, and Takashi Kato, A Redox-Switchable [2]Rotaxane in a Liquid-Crystalline State, Chem. Commun. 2010, 46, 1224–1226., 46, 1224–1226, 2010.05, レドックスによる液晶性分子マシンの駆動と色調変化に関する研究である。.
58. Kyosuke Isoda, Takuma Yasuda, and Takashi Kato, Truxene-Based Columnar Liquid Crystals: Self-Assembled Structures and Electro-Active Properties, Chem. Asian J. 2009, 4, 1619–1625., 4, 1619–1625, 2009.06.
59. Takuma Yasuda, Hirotaka Ooi, Jun Morita, Yusuke Akama, Kiyoshi Minoura, Masahiro Funahashi, Takeshi Shimomura, and Takashi Kato, π-Conjugated Oligothiophene-Based Polycatenar Liquid Crystals: Self-Organization and Photoconductive, Luminescent, and Redox Properties, Adv. Funct. Mater. 2009, 19, 411–419., 19, 411–419, 2008.12.
60. Takuma Yasuda, Kimiyasu Namekawa, Takayuki Iijima, and Takakazu Yamamoto, New Luminescent 1,2,4-Triazole/Thiophene Alternating Copolymers: Synthesis, Characterization, and Optical Properties, Polymer 2007, 48, 4375–4384., 48, 4375–4384, 2007.05.
61. Ivan Aprahamian, Takuma Yasuda, Taichi Ikeda, Sourav Saha, William R. Dichtel, Kyosuke Isoda, Takashi Kato, and J. Fraser Stoddart, A Liquid-Crystalline Bistable [2]Rotaxane, Angew. Chem. Int. Ed. 2007, 46, 4675–4679., 46, 4675–4679, 2007.05.
62. Takuma Yasuda, Kenji Kishimoto, and Takashi Kato, Columnar Liquid Crystalline π-Conjugated Oligothiophenes, Chem. Commun. 2006, 3399–3401., 3399–3401, 2006.07.
63. Takuma Yasuda, Yoshimasa Sakai, Shinji Aramaki, and Takakazu Yamamoto, New Coplanar (ABA)n-Type Donor-Acceptor π-Conjugated Copolymers Constituted of Alkylthiophene and Pyridazine: Synthesis Using Hexamethylditin, Self-Organized Solid Structure, and Optical and Electrochemical Properties of the Copolymers, Chem. Mater. 2005, 17, 6060–6068., 17, 6060–6068, 2005.11.
64. Takuma Yasuda, Tatsuya Imase, and Takakazu Yamamoto, Synthesis, Characterization, and Optical and Electrochemical Properties of New 2,1,3-Benzoselenadiazole-Based CT-Type Copolymers, Macromolecules 2005, 38, 7378–7385., 38, 7378–7385, 2005.07.
65. Takakazu Yamamoto, Takuma Yasuda, Yoshimasa Sakai, and Shinji Aramaki, Ambipolar Field-Effect Transistor (FET) and Redox Characteristics of a π-Conjugated Thiophene/1,3,4-Thiadiazole CT-Type Copolymer, Macromol. Rapid Commun. 2005, 26, 1214–1217., 26, 1214–1217, 2005.08.
66. Takuma Yasuda, Tatsuya Imase, Yoshiyuki Nakamura, and Takakazu Yamamoto, New Alternative Donor-Acceptor Arranged Poly(Aryleneethynylene)s and Their Related Compounds Composed of Five-Membered Electron-Accepting 1,3,4-Thiadiazole, 1,2,4-Triazole, or 3,4-Dinitrothiophene Units: Synthesis, Packing Structure, and Optical Properties, Macromolecules 2005, 38, 4687–4697., 38, 4687–4697, 2005.04.
67. Takuma Yasuda, Tatsuya Imase, Shintaro Sasaki, and Takakazu Yamamoto, Synthesis, Solid Structure, and Optical Properties of New Thiophene-Based Alternating π-Conjugated Copolymers Containing 4-Alkyl-1,2,4-triazole or 1,3,4-Thiadiazole Unit as the Partner Unit, Macromolecules 2005, 38, 1500–1503., 38, 1500–1503, 2005.01.
Membership in Academic Society
  • The Japanese Photochemistry Association
  • The Japan Society of Applied Physics
  • Materials Research Society
  • The Society of Synthetic Organic Chemistry, Japan
  • American Chemical Society
  • The Society of Polymer Science, Japan
  • The Chemical Society of Japan
  • Development of Highly Functional Electronics Devices Utilizing Self-Organization of Organic Semiconducting Molecules
  • BCSJ Award from the Chemical Society of Japan