Trialkylsilylethynyl-functionalized tetraceno[2,3-b]thiophene and anthra[2,3-b]thiophene organic transistors

被引：59

作者：

Tang, Ming L. ^{[3
]}

Reichardt, Anna D. ^{[3
]}

Siegrist, Theo ^{[2
]}

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

Bao, Zhenan ^{[1
]}

机构：

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

[2] Bell Labs, Alcatel Lucent, Murray Hill, NJ 07974 USA

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

来源：

CHEMISTRY OF MATERIALS | 2008年 / 20卷 / 14期

关键词：

D O I：

10.1021/cm800644y

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of ethynyl-substituted molecules with the tetraceno[2,3-b]thiophene and anthra[2,3-b]thiophene core have been synthesized. The aim was to investigate the impact of differently bulky side-chain substituents on the packing of the molecule in thin film and hence its thin-film transistor JFT) mobility. Three R groups were used, namely, the tri-isopropyl-, triethyl-, and trimethylsilylethynyl groups. We did not observe a direct correlation between substituent size and TFT mobility. However, the 5,12-bis(triisopropylsilylethynyl)tetraceno[2,3-b]thiophene has a mobility as high as 1.25 cm(2)/V. S, the 5,12bis(trimethylsilylethynyl)tetraceno[2,3-b]thiophene has a mobility of about 0.00616 cm(2)/V. s, while 5, 10bis(triethylsilylethynyl)anthra[2,3-b]thiophene and 5,10-bis(trimetiiylsilylethynyl)anthra[2,3-b]thiophene have a mobility of 10(-4) cm(2)/V . s on phenylsilane- and octadecyltrichlorosilane-treated surfaces respectively.

引用

页码：4669 / 4676

页数：8

共 25 条

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