Pentaceno[2,3-b]thiophene, a Hexacene Analogue for Organic Thin Film Transistors

被引：86

作者：

Tang, Ming L. ^{[2
]}

Mannsfeld, Stefan C. B. ^{[1
]}

Sun, Ya-Sen ^{[1
]}

Becerril, Hector A. ^{[1
]}

Bao, Zhenan ^{[1
]}

机构：

[1] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA

[2] Stanford Univ, Dept Chem, Stanford, CA 94305 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 03期

关键词：

GENERAL-SYNTHESIS; PENTACENE; ACENES; OLIGOTHIOPHENES; HETEROACENES; STABILITY; HEPTACENE; THIOPHENE; RINGS;

D O I：

10.1021/ja808142c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hexacene and larger fused rings remain elusive targets for chemists. Here, we report a hexacene-like molecule containing six linearly fused rings, specifically a pentacene molecule fused with a terminal thiophene ring, pentaceno[2,3-b]thiophene. It can be purified and isolated as a purple-black powder at ambient conditions. This molecule has a low HOMO-LUMO gap of 1.75 eV in o-DCB and an optical band gap of 1.58 eV in thin film. Top contact organic thin film transistors (OTFTs) were made, and atomic force microscopy (AFM) reveals a dendritic thin film growth characteristic of pentacene. An OTFT mobility of 0.574 cm(2)/V s was measured for pentaceno[2,3-b]thiophene under nitrogen.

引用

页码：882 / +

页数：3

共 23 条

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