2014S2-001
有機分子集合体の物性発現機構の解明とその最適化のための構造物性研究

Last modified 2020-01-24 by s-proposalpfiqst.kek.jp

●基本情報
　●実験責任者：熊井　玲児（PF）
　●課題有効期間：2014/4〜2017/3
　●実験ステーション：8A, 8B, 3A, 4C, AR-NE1A, 7C
　●関連課題：2010S2-004（分子性結晶における構造物性研究　-外場下における物性と構造-）
　　　　　　　2009S2-003（精密構造解析を中心とした強相関電子物質の物性発現機構の解明）
　　　　　　　2006S2-005（軌道放射光を用いた強相関電子材料の構造解析による物性発現機構の研究）

●課題の概要
　本課題申請グループは、有機物を中心とする強相関電子系物質を用い、種々の新奇物性の開拓を行ってきた。分子性物質の結晶構造を明らかにすることは、その物性発現機構を解明するために必須の課題であり、また、さらなる物質・物性開拓におけるフィードバックを行う上で非常に重要といえる。これまでに、本課題申請グループを中心として、BL-8A, 8B(旧1A, 1B)をメインに 2006S2-005、2009S2-003、2010S2-004 と複数のS型課題により物質開発のための構造物性研究を推進してきた。
今回申請するS2課題では、上記で培った構造解析における経験や技術的蓄積を活かし、分子性物質(単結晶及び薄膜)の精密構造解析あるいは外場下構造解析を中心とした構造物性的見地から、種々の物性(伝導性、磁性、誘電性、またはそれらの交差相関物性)の発現機構を解明するとともに、新規物性開拓のための設計指針の構築を目指す。そのために、試料環境(温度、圧力、外部電場)などを制御しつつ構造解析を行うとともに、より精度の高い構造解析技術の開発も視野に入れた研究を推進する。

●成果発表
　●論文

• "Coexistence of normal and inverse deuterium isotope effects in a phase-transition sequence of organic ferroelectrics"
  Sachio Horiuchi, Shoji Ishibashi, Kensuke Kobayashi and Reiji Kumai
  RSC Advances, 9 (2019) 39662.
• "Generation of “Sumanenylidene”: A Ground‐State Triplet Carbene on a Curved π‐Conjugated Periphery"
  Yumi Yakiyama, Yufeng Wang, Sayaka Hatano, Manabu Abe, Hidehiro Sakurai
  Chemistry, 14 (2019) 1844.
• "Variation in the nature of the neutral-ionic transition in DMTTF−QCl₄ under pressure probed by NQR and NMR"
  K. Sunami, F. Iwase, K. Miyagawa, S. Horiuchi, K. Kobayashi, R. Kumai, and K. Kanoda
  Phys. Rev. B, 99 (2019) 125133.
• "Extended and Modulated Thienothiophenes for Thermally Durable and Solution-Processable Organic Semiconductors"
  Satoru Inoue, Shoji Shinamura, Yuichi Sadamitsu, Shunto Arai, Sachio Horiuchi, Makoto Yoneya, Kazuo Takimiya, and Tatsuo Hasegawa
  Chem. Mater., 30 (2018) 5050.
• "Semiconductive Single Molecular Bilayers Realized Using Geometrical Frustration"
  Shunto Arai, Satoru Inoue, Takamasa Hamai, Reiji Kumai, and Tatsuo Hasegawa
  Adv. Mat., 30 (2018) 1707256.
• "Field-Induced Antipolar–Polar Structural Transformation and Giant Electrostriction in Organic Crystal"
  Kensuke Kobayashi, Sachio Horiuchi, Shoji Ishibashi, Youichi Murakami, and Reiji Kumai
  J. Am. Chem. Soc., 140 (2018) 3842.
• "Three superconducting phases with different categories of pairing in hole- and electron-doped LaFeAs_1−xP_xO"
  S. Miyasaka, M. Uekubo, H. Tsuji, M. Nakajima, S. Tajima, T. Shiota, H. Mukuda, H. Sagayama, H. Nakao, R. Kumai, and Y. Murakami
  Phys. Rev. B, 95 (2017) 214515.
• "The effect of a highly twisted C=C double bond on the electronic structures of 9,9′-bifluorenylidene derivatives in the ground and excited states"
  Atsuro Takai, Dylan J. Freas, Toshikane Suzuki, Manabu Sugimoto, Jan Labuta, Rie Haruki, Reiji Kumai, Shin-ichi Adachi, Hayato Sakai, Taku Hasobe, Yoshitaka Matsushita and Masayuki Takeuchi
  Organic Chemistry Frontiers, 4 (2017) 650.
• "Tunneling and Origin of Large Access Resistance in Layered-Crystal Organic Transistors"
  Takamasa Hamai, Shunto Arai, Hiromi Minemawari, Satoru Inoue, Reiji Kumai, and Tatsuo Hasegawa
  Phys. Rev. Applied, 8 (2017) 054011.
• "Crystallization and vitrification of electrons in a glass-forming charge liquid"
  S. Sasaki, K. Hashimoto, R. Kobayashi, K. Itoh, S. Iguchi, Y. Nishio, Y. Ikemoto, T. Moriwaki, N. Yoneyama, M. Watanabe, A. Ueda, H. Mori, K. Kobayashi, R. Kumai, Y. Murakami, J. Müller, T. Sasaki
  Science, 357 (2017) 1381.
• "Design and Preparation of a Quantum Spin Liquid Candidate κ-(ET)₂Ag₂(CN)₃ Having a Nearby Superconductivity"
  Takaaki Hiramatsu, Yukihiro Yoshida, Gunzi Saito, Akihiro Otsuka, Hideki Yamochi, Mitsuhiko Maesato, Yasuhiro Shimizu, Hiroshi Ito, Yuto Nakamura, Hideo Kishida, Masashi Watanabe, and Reiji Kumai
  Bulletin of the Chemical Society of Japan, 90 (2017) 1073.
• "Unidirectionally Crystallized Stable n-Type Organic Thin-Film Transistors Based on Solution-Processable Donor–Acceptor Compounds"
  Yosei Shibata, Jun'ya Tsutsumi, Satoshi Matsuoka, Hiromi Minemawari, Shunto Arai, Reiji Kumai and Tatsuo Hasegawa
  Advanced Electronic Materials, 3 (2017) 1700097.
• "Reduced exchange narrowing caused by gate-induced charge carriers in high-mobility donor–acceptor copolymers"
  Jun'ya Tsutsumi, Satoshi Matsuoka, Itaru Osaka, Reiji Kumai, and Tatsuo Hasegawa
  Phys. Rev. B, 95 (2017) 115306.
• "Anion substitution in hydrogen-bonded organic conductors: the chemical pressure effect on hydrogen-bond-mediated phase transition"
  Junya Yoshida, Akira Ueda, Reiji Kumai, Youichi Murakami and Hatsumi Mori
  CrystEngComm, 19 (2017) 367.
• "Proton tautomerism for strong polarization switching"
  Sachio Horiuchi, Kensuke Kobayashi, Reiji Kumai and Shoji Ishibashi
  Nature Communications, 8 (2017) 14426.
• "Enhanced Layered-Herringbone Packing due to Long Alkyl Chain Substitution in Solution-Processable Organic Semiconductors"
  Hiromi Minemawari, Mutsuo Tanaka, Seiji Tsuzuki, Satoru Inoue, Toshikazu Yamada, Reiji Kumai, Yukihiro Shimoi, and Tatsuo Hasegawa
  Chemistry of Materials, 29 (2017) 1245.
• "Redox-Dependent Transformation of a Hydrazinobuckybowl between Curved and Planar Geometries"
  Shuhei Higashibayashi, Palash Pandit, Rie Haruki, Shin-ichi Adachi, Reiji Kumai
  Angewandte Chemie, 55 (2016) 10830.
• "Molecular Requirements for Printable Organic Semiconductors in 7-Alkyl-2-phenyl[1]benzothieno[3,2-b][1]benzothiophenes (Ph-BTBT-C_n’s)"
  S. Inoue, H. Minemawari, J. Tsutsumi, T. Hamai, S. Arai, T. Yamada, S. Horiuchi, M. Tanaka, M. Yoneya, R. Kumai and T. Hasegawa
  MRS Advances, 1 (2016) 2653.
• "Effects of Substituted Alkyl Chain Length on Solution-Processable Layered Organic Semiconductor Crystals"
  Satoru Inoue, Hiromi Minemawari, Jun’ya Tsutsumi, Masayuki Chikamatsu, Toshikazu Yamada, Sachio Horiuchi, Mutsuo Tanaka, Reiji Kumai, Makoto Yoneya, and Tatsuo Hasegawa
  Chem. Mater., 27 (2015) 3809.
• "Modulation of a Molecular π-Electron System in a Purely Organic Conductor that Shows Hydrogen-Bond-Dynamics-Based Switching of Conductivity and Magnetism"
  Akira Ueda, Akari Hatakeyama, Masaya Enomoto, Reiji Kumai, Youichi Murakami and Hatsumi Mori
  Chemistry - A European Journal, 21 (2015) 15020.
• "Few-Volt Operation of Printed Organic Ferroelectric Capacitor"
  Yuki Noda, Toshikazu Yamada, Kensuke Kobayashi, Reiji Kumai, Sachio Horiuchi, Fumitaka Kagawa and Tatsuo Hasegawa
  Adv. Mat., 27 (2015) 6475.
• "Systematic Variations in the Charge-Glass-Forming Ability of Geometrically Frustrated θ-(BEDT-TTF)₂X Organic Conductors"
  Takuro Sato, Fumitaka Kagawa, Kensuke Kobayashi, Akira Ueda, Hatsumi Mori, Kazuya Miyagawa, Kazushi Kanoda, Reiji Kumai, Youichi Murakami, and Yoshinori Tokura
  J. Phys. Soc. Jpn., 83 (2014) 083602.
• "Crystal structure of asymmetric organic semiconductor 7-decyl-2-phenyl[1]benzothieno[3,2-b][1]benzothiophene"
  Hiromi Minemawari, Jun’ya Tsutsumi, Satoru Inoue, Toshikazu Yamada, Reiji Kumai, and Tatsuo Hasegawa
  Appl. Phys. Exp., 7 (2014) 091601.