Two-dimensional brickblock arrangement in bis-fused tetrathiafulvalene semiconductors

Takeshi Terauchi, Satoshi Sumi, Yuka Kobayashi, Yoshitaka Matsushita, Akira Sato

研究成果: Article査読

6 被引用数 (Scopus)

抄録

Molecular packing arrangement is a very important factor in the charge carrier mobility of organic semiconductors, but its rational design has not been established as yet. Two-dimensional (2D) lamellar packing is an advantageous arrangement for high charge mobility, but few examples have been reported thus far. Herein we show crystal structures and the electronic properties of newly designed bis-fused tetrathiafulvalene (TTF) semiconductors with hetero substituent groups with distinct electronic effects. Unprecedented 2D lamellar alignment is achieved in a single crystal, where the bis-fused TTF rings interact three dimensionally with face-to-face and side-by-side intermolecular S···S contacts up to a total of 20 sites per π molecule and form graphitelike "brickblock" structure. The charge mobility of a single crystal is as high as 0.78 cm2 V-1s-1. Systematic investigations of the semiconductors reveal a key role of intramolecular S···O interaction between a bis-fused TTF ring and a methoxycarbonyl group in controlling efficient arrangement, leading to high mobility.

本文言語English
ページ(範囲)1412-1418
ページ数7
ジャーナルCrystal Growth and Design
14
3
DOI
出版ステータスPublished - 2014 3 5
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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