研究者業績

川瀬 毅

Takeshi Kawase

基本情報

所属
兵庫県立大学 工学部 応用化学工学科 兵庫県立大学大学院工学研究科応用化学専攻 教授
学位
理学博士

J-GLOBAL ID
200901016785202220
researchmap会員ID
1000031598

外部リンク

研究キーワード

 2

委員歴

 6

論文

 110
  • Takeru Inoue, Yuuka Matsuura, Koki Horii, Akihito Konishi, Jun-ichi Nishida, Makoto Yasuda, Takeshi Kawase
    Chemical Communications 2024年  
    N-di(isopropyl)phenyl-2-azaphenalenyl radical cations were obtained as a dark brown air-sensitive crystalline compound. The high HOMA values and the ACID calculation indicate relatively high aromatic character of a 5,8-di-tert-butyl derivative, and...
  • Hiroshi Nishimoto, Tomofumi Kadoya, Takeshi Kawase, Jun‐ichi Nishida
    Asian Journal of Organic Chemistry 12(12) 2023年12月4日  
    Abstract Despite having an asymmetric structure, 2‐(thiopyran‐4‐ylidene)‐1,3‐benzodithiole (TP‐BT) is a good p‐type semiconductor containing isotropic three‐dimensional (3D) intermolecular interactions. Moreover, its π‐extended analogs can potentially work as organic electronic materials. Herein, a fused‐type π‐extended analog containing an extra benzene ring on the benzodithiole unit, i. e., 2‐(thiopyran‐4‐ylidene)‐1,3‐naphtho[2,3‐d]dithiole (TP‐NT), and three σ‐bonded‐type π‐extended analogs, i. e., phenyl‐, naphthyl‐, and anthryl‐substituted analogs (Ph‐TP‐BT, Nap‐TP‐BT, and Ant‐TP‐BT, respectively), were prepared and their molecular arrangements and organic field‐effect transistor (OFET) properties were investigated. TP‐NT formed a herringbone arrangement with 3D intermolecular interactions similar to that of the parent TP‐BT. Meanwhile, Ant‐TP‐BT formed a bilayer‐type layered herringbone arrangement. Since the highest occupied molecular orbital and the lowest unoccupied molecular orbital are located on the TP‐BT and anthracene units, respectively, a unique donor–acceptor separated network was formed. In OFETs prepared via a vapor deposition method using the σ‐bonded‐type analogs, slightly lower mobilities (0.1 to 8×10−3 cm2/Vs) than that of TP‐NT (0.1 cm2/Vs) were observed. Upon photo‐irradiation, the OFET of Ant‐TP‐BT exhibited a larger threshold voltage shift and an increase in the off current compared with TP‐NT. The σ‐bonded‐type analogs showed a larger photo‐response effect than TP‐NT derived from the donor–acceptor molecular structure.
  • K. Oda, H. Nishiyama, J. Nishida, T. Kawase
    ChemPlusChem 2023 e202200360 2023年2月  査読有り最終著者責任著者
  • Hiroshi Nishimoto, Takeshi Kawase, Jun-ichi Nishida
    CrystEngComm 25(34) 4856-4863 2023年  
    We report the synthesis of aryl-substituted TP-BT derivatives and their OFET properties. 4-Pyridyl substituted TP-BT shows switching characteristics by photo-irradiation.
  • K. Katayama, Y. Matsuura, C. Kitamura, J. Nishida, T. Kawase
    ChemPhotoChem 2022 e202200013 2022年3月  査読有り最終著者責任著者

MISC

 83
  • Takeshi Kawase
    SYNLETT (17) 2609-2626 2007年10月  
    Strained phenylacetylene macrocycles, cyclic [3]- and [4]metaphenylacetylenes ([n]CMPAs) and methoxy derivatives, and cyclic [5]- to [9]paraphenylacetylenes ([n]CPPAs) were prepared using a strategy based on the McMurry coupling reaction. The physicochemical and supramolecular properties of these substances were determined. Interestingly, apart from [3]CMPAs, compounds in these series possess preorganized three-dimensional cavities. 1 Introduction 2 Theoretical Optimized Structures 3 Synthesis 4 Properties and Structures of Cyclic Metaphenylacetylenes 5 Properties and Structures of Carbon Nanorings 6 Outlook.
  • Takeshi Kawase
    JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN 65(9) 888-896 2007年9月  
    The pi-pi interaction between curved conjugated systems is important for the formation and properties of new carbon materials such as carbon nanotubes, bucky onions and fullerene peapods. However, the nature has been little understood so far. Recently we have designed and synthesized cyclic [n]paraphenyleneacetylenes ([n]CPPAs) and the related compounds. They have smooth belt-shaped structures similar to a cut piece of carbon nanotubes, and thus may be termed "carbon nanorings". The carbon nanorings having an appropriate cavity size form stable inclusion complexes with fullerenes in solution as well as in the solid state. The high affinity suggests that the considerably strong attractive interactions are operative between the curved conjugated systems. This review provides an insight into the noncovalent interaction between the concave and convex pi surfaces.
  • Hiroyuki Kurata, Seiji Muro, Tetsuya Enomoto, Takeshi Kawase, Masaji Oda
    Bulletin of the Chemical Society of Japan 80(2) 349-357 2007年  
  • H Kurata, Y Takehara, K Matsumoto, T Kawase, M Oda
    CHEMISTRY LETTERS 34(12) 1660-1661 2005年12月  
    The extended-qui none derivative of cyclopent[fg]acenaphthylene-1,2-dione (pyracyloquinone) is first synthesized and characterized. An X-ray analysis exhibits the non-planar structure involving bent of two 3,5-di-tert-butyl-4-oxo-cyclohexadienylidene units, and bond alternation along the molecular periphery. The facile formation of trianion radical on cyclic voltammetry reflects high-electron affinity enhanced by antiaromatic character of the formed pyracylene moiety on the dianion state.
  • H Kurata, Y Takehara, K Matsumoto, T Kawase, M Oda
    CHEMISTRY LETTERS 34(12) 1660-1661 2005年12月  
    The extended-qui none derivative of cyclopent[fg]acenaphthylene-1,2-dione (pyracyloquinone) is first synthesized and characterized. An X-ray analysis exhibits the non-planar structure involving bent of two 3,5-di-tert-butyl-4-oxo-cyclohexadienylidene units, and bond alternation along the molecular periphery. The facile formation of trianion radical on cyclic voltammetry reflects high-electron affinity enhanced by antiaromatic character of the formed pyracylene moiety on the dianion state.

書籍等出版物

 10

講演・口頭発表等

 6

共同研究・競争的資金等の研究課題

 22