論文

• Kazuyoshi Watanabe, Naoki Miura, Hiroaki Taguchi, Takeshi Komatsu, Atsushi Aratake, Tatsuyuki Makita, Masahiro Tanabe, Takahiro Wakimoto, Shun Watanabe, Jun Takeya, Kazuyoshi Watanabe, Naoki Miura, Hiroaki Taguchi, Takeshi Komatsu, Atsushi Aratake, Tatsuyuki Makita, Masahiro Tanabe, Takahiro Wakimoto, Shohei Kumagai, Toshihiro Okamoto, Shun Watanabe, Jun Takeya. All-Carbon-Based Complementary Integrated Circuits, Advanced Materials Technologies, Wiley-VCH GmbH, Vol. 9, issue 5, 2301673, Jan. 2024.
• Tadanori Kurosawa, Yu Yamashita, Yuki Kobayashi, Craig P. Yu, Shohei Kumagai, Tsubasa Mikie, Itaru Osaka, Shun Watanabe, Jun Takeya, Toshihiro Okamoto. Employment of Alkoxy Sidechains in Semicrystalline Semiconducting Polymers for Ambient-Stable p-Doped Conjugated Polymers, Macromolecules, American Chemical Society, 57, 328, Dec. 2023.
• Craig P. Yu, Shohei Kumagai, Michitsuna Tsutsumi, Tadanori Kurosawa, Hiroyuki Ishii, Go Watanabe, Daisuke Hashizume, Hiroki Sugiura, Yukio Tani, Toshihiro Ise, Tetsuya Watanabe, Hiroyasu Sato, Jun Takeya, Toshihiro Okamoto. Asymmetrically Functionalized Electron-Deficient π-Conjugated System for Printed Single-Crystalline Organic Electronics, Advanced Science, Wiley-VCH GmbH, 10, 2207440, Sept. 2023.
• Tatsuyuki Makita, Yoma Ninomiya, Shohei Kumagai, Toshihiro Okamoto, Mari Sasaki, Shun Watanabe, Jun Takeya. Nano‐Ground Glass as a Superhydrophilic Template for Printing High‐Performance Organic Single‐Crystal Thin Films, Advanced Materials Interfaces, Volume 8, Issue 10, pp. 2100033, Mar. 2021.  公式リンク  
  
• Xiaozhu Wei, Shohei Kumagai, Mari Sasaki, Shun Watanabe, Jun Takeya. Stabilizing solution-processed metal oxide thin-film transistors via trilayer organic–inorganic hybrid passivation, AIP Advances, Volume 11, Issue 3, Page 035027, Mar. 2021.  公式リンク  
  
• Yu Yamashita, Samik Jhulki, Dinesh Bhardwaj, Elena Longhi, Shohei Kumagai, Shun Watanabe, Stephen Barlow, Seth R Marder, Jun Takeya. Highly air-stable, n-doped conjugated polymers achieved by dimeric organometallic dopants, Journal of Materials Chemistry C, Royal Society of Chemistry, Vol. 9, No. 12, pp. 4105-4111, Mar. 2021.  公式リンク  
  
• Shohei Kumagai, Craig P. Yu, Shunsuke Nakano, Tatsuro Annaka, Masato Mitani, Masafumi Yano, Hiroyuki Ishii, Jun Takeya, Toshihiro Okamoto. Role of Perfluorophenyl Group in the Side Chain of Small-Molecule n-Type Organic Semiconductors in Stress Stability of Single-Crystal Transistors, The Journal of Physical Chemistry Letters, American Chemical Society, Vol. 12, Issue 8, pp. 2095-2101, Feb. 2021.  公式リンク  
  
• Shun Watanabe, Ryohei Hakamatani, Keita Yaegashi, Yu Yamashita, Han Nozawa, Mari Sasaki, Shohei Kumagai, Toshihiro Okamoto, Cindy G Tang, Lay‐Lay Chua, Peter KH Ho, Jun Takeya. Surface Doping of Organic Single‐Crystal Semiconductors to Produce Strain‐Sensitive Conductive Nanosheets, Advanced Science, Volume 8, Issue 3, pp. 2002065, Dec. 2020.  公式リンク  
  
• Shohei Kumagai, Shun Watanabe, Hiroyuki Ishii, Nobuaki Isahaya, Akifumi Yamamura, Takahiro Wakimoto, Hiroyasu Sato, Akihito Yamano, Toshihiro Okamoto, Jun Takeya. Coherent Electron Transport in Air‐Stable, Printed Single‐Crystal Organic Semiconductor and Application to Megahertz Transistors, Advanced Materials, Volume 32, Issue 50, Page 2003245, Nov. 2020.  公式リンク  
  
• Shohei Kumagai, Hiroyuki Ishii, Go Watanabe, Tatsuro Annaka, Eiji Fukuzaki, Yukio Tani, Hiroki Sugiura, Tetsuya Watanabe, Tadanori Kurosawa, Jun Takeya, Toshihiro Okamoto. Cooperative Aggregations of Nitrogen-Containing Perylene Diimides Driven by Rigid and Flexible Functional Groups, Chemistry of Materials, American Chemical Society, Vol. 32, No. 21, pp. 9115-9125, Oct. 2020.  公式リンク  
  
• Chizuru Sawabe, Shohei Kumagai, Masato Mitani, Hiroyuki Ishii, Masakazu Yamagishi, Hajime Sagayama, Reiji Kumai, Hiroyasu Sato, Jun Takeya, Toshihiro Okamoto. Band-like transporting and thermally durable V-shaped organic semiconductors with a phenyl key block, Journal of Materials Chemistry C, Vol. 8, No. 40, Page 14172-14179, Sept. 2020.  公式リンク  
  
• Toshihiro Okamoto, Masato Mitani, Craig P Yu, Chikahiko Mitsui, Masakazu Yamagishi, Hiroyuki Ishii, Go Watanabe, Shohei Kumagai, Daisuke Hashizume, Shota Tanaka, Masafumi Yano, Tomokatsu Kushida, Hiroyasu Sato, Kunihisa Sugimoto, Takashi Kato, Jun Takeya. Alkyl-Substituted Selenium-Bridged V-Shaped Organic Semiconductors Exhibiting High Hole Mobility and Unusual Aggregation Behavior, Journal of the American Chemical Society, Vol. 142, No. 35, pp. 14974-14984, Aug. 2020.  公式リンク  
  
• Tatsuyuki Makita, Ryohei Nakamura, Mari Sasaki, Shohei Kumagai, Toshihiro Okamoto, Shun Watanabe, Jun Takeya. Electroless‐Plated Gold Contacts for High‐Performance, Low Contact Resistance Organic Thin Film Transistors, Advanced Functional Materials, Vol. 30, No. 39, pp. 2003977, Aug. 2020.  公式リンク  
  
• Taiki Sawada, Tatsuyuki Makita, Akifumi Yamamura, Mari Sasaki, Yasunari Yoshimura, Teruaki Hayakawa, Toshihiro Okamoto, Shun Watanabe, Shohei Kumagai, Jun Takeya. Low-voltage complementary inverters using solution-processed, high-mobility organic single-crystal transistors fabricated by polymer-blend printing, Applied Physics Letters, AIP Publishing, Volume 117, Issue 3, July 2020.  公式リンク  
  
• Qian Liu, Shohei Kumagai, Sergei Manzhos, Yingqian Chen, Indunil Angunawela, Masrur Morshed Nahid, Krishna Feron, Steven E Bottle, John Bell, Harald Ade, Jun Takeya, Prashant Sonar. Synergistic Use of Pyridine and Selenophene in a Diketopyrrolopyrrole‐Based Conjugated Polymer Enhances the Electron Mobility in Organic Transistors, Advanced Functional Materials, Vol. 30, No. 34, pp. 2000489, June 2020.  公式リンク  
  
• Toshihiro Okamoto, Shohei Kumagai, Eiji Fukuzaki, Hiroyuki Ishii, Go Watanabe, Naoyuki Niitsu, Tatsuro Annaka, Masakazu Yamagishi, Yukio Tani, Hiroki Sugiura, Tetsuya Watanabe, Shun Watanabe, Jun Takeya. Robust, high-performance n-type organic semiconductors, Science Advances, Vol. 6, Issue 18, May 2020.  公式リンク  
  
• Tatsuyuki Makita, Akifumi Yamamura, Junto Tsurumi, Shohei Kumagai, Tadanori Kurosawa, Toshihiro Okamoto, Mari Sasaki, Shun Watanabe, Jun Takeya. Damage-free Metal Electrode Transfer to Monolayer Organic Single Crystalline Thin Films, Scientific Reports, Vol. 10, No. 1, 4702, Mar. 2020.  公式リンク  
  
• Tatsuyuki Makita, Shohei Kumagai, Akihito Kumamoto, Masato Mitani, Junto Tsurumi, Ryohei Hakamatani, Mari Sasaki, Toshihiro Okamoto, Yuichi Ikuhara, Shun Watanabe, Jun Takeya. High-performance, semiconducting membrane composed of ultrathin, single-crystal organic semiconductors, Proceedings of the National Academy of Sciences, Vol. 117, No. 1, Page 80-85, Jan. 2020.  公式リンク  
  
• Xiaozhu Wei, Shohei Kumagai, Kotaro Tsuzuku, Akifumi Yamamura, Tatsuyuki Makita, Mari Sasaki, Shun Watanabe, Jun Takeya. Solution-processed flexible metal-oxide thin-film transistors operating beyond 20 MHz, Flexible and Printed Electronics, Vol. 5, No. 1, Page 015003, Jan. 2020.  公式リンク  
  
• Shohei Kumagai, Akifumi Yamamura, Tatsuyuki Makita, Junto Tsurumi, Ying Ying Lim, Takahiro Wakimoto, Nobuaki Isahaya, Han Nozawa, Kayoko Sato, Masato Mitani, Toshihiro Okamoto, Shun Watanabe, Jun Takeya. Scalable Fabrication of Organic Single-Crystalline Wafers for Reproducible TFT Arrays, Scientific Reports, Vol. 9, No. 1, Page 15897, Nov. 2019.  公式リンク  
  
• Ryuta Ishikawa, Shuya Ueno, Shoei Nifuku, Yoji Horii, Hiroaki Iguchi, Yuji Miyazaki, Motohiro Nakano, Shinya Hayami, Shohei Kumagai, Keiichi Katoh, Zhao‐Yang Li, Masahiro Yamashita, Satoshi Kawata. Simultaneous Spin‐Crossover Transition and Conductivity Switching in a Dinuclear Iron(II) Coordination Compound Based on 7,7′,8,8′‐Tetracyano‐p‐quinodimethane, Chemistry – A European Journal, Vol. 26, Issue 6, Page 1278-1285, Oct. 2019.  公式リンク  
  
• Shohei Koyama, Hiroaki Iguchi, Shinya Takaishi, Goulven Cosquer, Shohei Kumagai, Jun Takeya, Toshihiro Okamoto, Masahiro Yamashita. Formation of Pores and π-Stacked Columns in Benzothienobenzothiophene-based Linear Coordination Polymers, Chemistry Letters, Vol. 48, Issue 8, Page 756-759, Aug. 2019.  公式リンク  
  
• Yu Yamashita, Junto Tsurumi, Masahiro Ohno, Ryo Fujimoto, Shohei Kumagai, Tadanori Kurosawa, Toshihiro Okamoto, Jun Takeya, Shun Watanabe. Efficient molecular doping of polymeric semiconductors driven by anion exchange, Nature, Vol. 572, No. 7771, Page 634-638, Aug. 2019.  公式リンク  
  
• Hideaki Murasugi, Shohei Kumagai, Hiroaki Iguchi, Masahiro Yamashita, Shinya Takaishi. Organic–Inorganic Hybrid Gold Halide Perovskites: Structural Diversity through Cation Size, Chemistry – A European Journal, Vol. 25, Issue 42, Page 9885-9891, July 2019.  公式リンク  
  
• Takefumi Yoshida, Shinya Takaishi, Shohei Kumagai, Hiroaki Iguchi, Mohammad Rasel Mian, Masahiro Yamashita. Observation of charge bistability in quasi-one-dimensional halogen-bridged palladium complexes by X-ray absorption spectroscopy, Dalton Transactions, Vol. 48, No. 31, Page 11628-11631, June 2019.  公式リンク  
  
• Craig P. Yu, Ryoya Kimura, Tadanori Kurosawa, Eiji Fukuzaki, Tetsuya Watanabe, Hiroyuki Ishii, Shohei Kumagai, Masafumi Yano, Jun Takeya, Toshihiro Okamoto. Air-Stable Benzo[c]thiophene Diimide n-Type π-Electron Core, Organic Letters, Vol. 21, No. 12, pp. 4448-4453, June 2019.  公式リンク  
  
• Shohei Kumagai, Masahiro Nakano, Kazuo Takimiya, Jun Takeya. Solution-crystallized n-type organic thin-film transistors: An impact of branched alkyl chain on high electron mobility and thermal durability, Organic Electronics, Vol. 62, Page 548-553, Nov. 2018.  公式リンク  
  
• Shohei Kumagai, Shinya Takaishi, Mengqi Gao, Hiroaki Iguchi, Brian K. Breedlove, Masahiro Yamashita. MX-Chain Compounds with ReO4 Counterions: Exploration of the Robin–Day Class I–II Boundary, Inorganic Chemistry, Vol. 57, No. 7, pp. 3775-3781, Mar. 2018.  公式リンク  
  
• Shohei Kumagai, Shinya Takaishi, Hiroaki Iguchi, Brian K. Breedlove, Takuya Kaneko, Hiroshi Ito, Shin-ichi Kuroda, Masahiro Yamashita. Correlation between Chemical and Physical Pressures on Charge Bistability in [Pd(en)2Br](Suc-Cn)2·H2O, Inorganic Chemistry, Vol. 57, No. 1, pp. 12-15, Nov. 2017.  公式リンク  
  
• Ryo Fujimoto, Yu Yamashita, Shohei Kumagai, Junto Tsurumi, Alexander Hinderhofer, Katharina Broch, Frank Schreiber, Shun Watanabe, Jun Takeya. Molecular doping in organic semiconductors: fully solution-processed, vacuum-free doping with metal–organic complexes in an orthogonal solvent, Journal of Materials Chemistry C, Vol. 5, No. 46, Page 12023-12030, Oct. 2017.  公式リンク  
  
• Shohei Kumagai, Hiroko Murakami, Kotaro Tsuzuku, Tatsuyuki Makita, Chikahiko Mitsui, Toshihiro Okamoto, Shun Watanabe, Jun Takeya. Solution-processed organic–inorganic hybrid CMOS inverter exhibiting a high gain reaching 890, Organic Electronics, Vol. 48, Page 127-131, Sept. 2017.  公式リンク  
  
• Mohamad Insan Nugraha, Shohei Kumagai, Shun Watanabe, Mykhailo Sytnyk, Wolfgang Heiss, Maria Antonietta Loi, Jun Takeya. Enabling Ambipolar to Heavy n-Type Transport in PbS Quantum Dot Solids through Doping with Organic Molecules, ACS Applied Materials & Interfaces, Vol. 9, No. 21, Page 18039-18045, May 2017.  公式リンク  
  
• Tatsuyuki Makita, Masayuki Sasaki, Tatsuro Annaka, Mari Sasaki, Hiroyuki Matsui, Chikahiko Mitsui, Shohei Kumagai, Shun Watanabe, Teruaki Hayakawa, Toshihiro Okamoto, Jun Takeya. Spontaneously formed high-performance charge-transport layers of organic single-crystal semiconductors on precisely synthesized insulating polymers, Applied Physics Letters, Vol. 110, Issue 16, 163302, Apr. 2017.  公式リンク  
  
• Gregor Kieslich, Shohei Kumagai, Alexander C Forse, Shijing Sun, Sebastian Henke, Masahiro Yamashita, Clare P Grey, Anthony K Cheetham. Tuneable mechanical and dynamical properties in the ferroelectric perovskite solid solution [NH3NH2]1−x[NH3OH]xZn(HCOO)3, Chemical Science, Vol. 7, Page 5108-5112, Apr. 2016.  公式リンク  
  
• Gregor Kieslich, Alexander C Forse, Shijing Sun, Keith T Butler, Shohei Kumagai, Yue Wu, Mark R Warren, Aron Walsh, Clare P Grey, Anthony K Cheetham. Role of Amine–Cavity Interactions in Determining the Structure and Mechanical Properties of the Ferroelectric Hybrid Perovskite [NH3NH2]Zn(HCOO)3, Chemistry of Materials, Vol. 28, No. 1, Page 312-317, Jan. 2016.  公式リンク  
  
• Gregor Kieslich, Shohei Kumagai, Keith T Butler, Takuro Okamura, Christopher H Hendon, Shijing Sun, Masahiro Yamashita, Aron Walsh, Anthony K Cheetham. Role of entropic effects in controlling the polymorphism in formate ABX3 metal–organic frameworks, Chemical Communications, Vol. 51, No. 85, Page 15538-15541, Sept. 2015.  公式リンク  
  
• Shohei Kumagai, Shinya Takaishi, Hiroaki Iguchi, Masahiro Yamashita. Charge-bistable Pd(iii)/Pd(ii,iv) coordination polymers: phase transitions and their applications to optical properties, Dalton Transactions, Vol. 44, Page 8590-8599, Mar. 2015.  公式リンク  
  
• Shohei Kumagai, Hiroaki Iguchi, Shinya Takaishi, Brian K Breedlove, Masahiro Yamashita, Hiroyuki Matsuzaki, Hiroshi Okamoto, Kenichi Kato, Masaki Takata. Continuous Control of Optical Gaps in Quasi-One-Dimensional Bromide-Bridged Platinum Complexes by Utilizing Chemical Pressure, Inorganic Chemistry, American Chemical Society, Vol. 53, No. 21, Page 11764-11769, Nov. 2014.  公式リンク  
  
• H Matsuzaki, M Iwata, T Miyamoto, T Terashige, K Iwano, S Takaishi, M Takamura, S Kumagai, M Yamashita, R Takahashi, Y Wakabayashi, H Okamoto. Excitation-Photon-Energy Selectivity of Photoconversions in Halogen-Bridged Pd-Chain Compounds: Mott Insulator to Metal or Charge-Density-Wave State, Physical Review Letters, American Physical Society, Vol. 113, No. 9, Page 096403, Aug. 2014.  公式リンク  
  
• Shohei Kumagai, Shinya Takaishi, Brian K Breedlove, Hiroshi Okamoto, Hisaaki Tanaka, Shin-ichi Kuroda, Masahiro Yamashita. Bromide-bridged palladium(iii) chain complexes showing charge bistability near room temperature, Chem. Communications, Vol. 50, No. 61, Page 8382-8384, June 2014.  公式リンク  
  
• Minseob Shin, Shinya Takaishi, Shohei Kumagai, Yutaro Ueda, Brian K Breedlove, Hiroyuki Matsuzaki, Hiroshi Okamoto, Yusuke Wakabayashi, Masahiro Yamashita. Smallest optical gap for quasi-one-dimensional iodo-bridged platinum compounds, Dalton Transactions, Vol. 42, No. 18, Page 6277-6280, Jan. 2013.  公式リンク  
  
• Hiroyuki MATSUZAKI, Shinya TAKAISHI, Mitsuhito TAKAMURA, Shohei KUMAGAI, Masahiro YAMASHITA, Hiroshi OKAMOTO. Temperature- and Pressure-Induced Charge-Density-Wave to Mott–Hubbard Phase Transitions in Quasi-One-Dimensional Bromine-Bridged Pd Compounds, Journal of the Physical Society of Japan, Vol. 81, No. 074705, July 2012.  公式リンク  
  

国内会議発表 (査読なし・不明)

• 三谷 真人, Craig Yu, 沢辺 千鶴, 三津井 親彦, 關 拓和, 篠崎 雄大, 渡辺 豪, 橋爪 大輔, 熊谷 翔平, 竹谷 純一, 岡本 敏宏. アルキル鎖長に依存した高移動度N字型有機半導体分子の結晶多形・相転移挙動の実測とシミュレーション, 日本化学会 第104春季年会（2024）, Mar. 2024.
• 熊谷 翔平, 荒井 勇太郎, 渡辺 豪, 石井 宏幸, 佐藤 寛泰, 竹谷 純一, 岡本 敏宏. アルキル置換シクロヘキシル基を持つn型有機半導体のレンガ塀様結晶構造と電荷輸送特性, 日本化学会 第104春季年会（2024）, 2024.
• 三谷真人, Craig P. Yu, 沢辺千鶴, 三津井親彦, 關拓和, 渡辺豪, 橋爪大輔, 熊谷翔平, 竹谷純一, 岡本敏宏. 高移動度N字型有機半導体の誘導体化：相転移挙動・結晶多形の実測とシミュレーション, 第24回液晶化学研究会シンポジウム, July 2023.

[ BibTeX 形式で保存 ]    [ 論文・著書をCSV形式で保存 ]    [ 特許をCSV形式で保存 ]