High-Mobility Regioisomeric Thieno[f,f′]bis[1]benzothiophenes: Remarkable Effect of Syn/Anti Thiophene Configuration on Optoelectronic Properties, Self-Organization, and Charge-Transport Functions in Organic Transistors

Tatsuya Oyama, Tatsuya Mori, Tomohiro Hashimoto, Muneaki Kamiya, Takahiro Ichikawa, Hideaki Komiyama, Yu Seok Yang, Takuma Yasuda

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抜粋

π-Conjugated thienoacene-based organic semiconductors with high charge carrier mobility and processability have been intensively pursued for electronic device applications, including organic field-effect transistors (OFETs). Their charge carrier mobility is an important figure of merit, and is influenced not only by the intrinsic electronic structure at molecular level, but also by the molecular packing arrangement and crystallinity in the solid state. In this work, the focus is on a unique regioisomeric thienoacene system involving dialkyl-thieno[f,f′]bis[1]benzothiophene isomers having different syn/anti thiophene configurations (syn- and anti-TBBT-8). The effects of these regioisomeric structures on the physicochemical properties, self-organization behavior, and charge-transport functions are systematically investigated using experimental and theoretical analyses. The structural analyses indicate that the syn- and anti-TBBT-8 isomers self-organize into completely different packing arrangements, in the form of solution-crystallized microribbons and thin films. The resulting charge-transport properties are strongly dependent on the syn/anti thiophene configurations. Remarkably, solution-processed OFETs using the syn-TBBT-8 isomer show high hole mobilities of up to 10.1 cm2 V−1 s−1, which are more than one order of magnitude higher than those of the anti-TBBT-8 isomer. This work highlights the importance of the regioisomeric molecular configuration of thienoacene-based organic semiconductors for developing high-performance electronic devices.

元の言語英語
記事番号1700390
ジャーナルAdvanced Electronic Materials
4
発行部数1
DOI
出版物ステータス出版済み - 1 2018

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

フィンガープリント High-Mobility Regioisomeric Thieno[f,f′]bis[1]benzothiophenes: Remarkable Effect of Syn/Anti Thiophene Configuration on Optoelectronic Properties, Self-Organization, and Charge-Transport Functions in Organic Transistors' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用