Bilayered Crystalline Organic Semiconductors for Solution-processed OFETs: Asymmetrically-substituted Smectic Liquid Crystal of Benzo[1,2-b:4,5-b′]dithiophene Derivatives

DOI PDF 被引用文献3件 参考文献38件
  • Hao Wu
    Imaging Science and Engineering Research Center, Tokyo Institute of Technology, J1-2, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8503 , Japan
  • Hiroaki Iino
    Imaging Science and Engineering Research Center, Tokyo Institute of Technology, J1-2, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8503 , Japan
  • Jun-ichi Hanna
    Imaging Science and Engineering Research Center, Tokyo Institute of Technology, J1-2, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8503 , Japan

抄録

<jats:title>Abstract</jats:title> <jats:p>Asymmetrically-substituted smectic liquid crystals with a small core of benzo[1,2-b:4,5-b′]dithiophene (BDT) substituted with monoalkyl and phenyl groups, 6-alkyl-2-phenyl-benzo[1,2-b:4,5-b′]dithiophene (Ph-BDT-Cn, n = 8, 14), were synthesized, and their mesomorphism and properties of crystalline films were characterized for solution-processed OFETs. Both compounds exhibited the SmE phase, and their crystalline films derived from SmE films exhibited the crystal-to-crystal transition from the monolayered crystals as-fabricated to the bilayered crystals when thermally annealed. The FET mobility was significantly enhanced by a factor of 2 to 10, accompanied with the phase transition to the bilayered crystals and reached up to 0.59 cm2 V−1 s−1 in spite of a small core of BDT. We discuss a new strategy of molecular design of soluble OFET materials behind the present results.</jats:p>

収録刊行物

  • Chemistry Letters

    Chemistry Letters 47 (4), 510-513, 2018-02-02

    Oxford University Press (OUP)

被引用文献 (3)*注記

もっと見る

参考文献 (38)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ