Trialkylsilylethynyl-functionalized tetraceno[2,3-b]thiophene and anthra[2,3-b]thiophene organic transistors
Trialkylsilylethynyl-functionalized tetraceno[2,3-b]thiophene and anthra[2,3-b]thiophene organic transistors
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DOI：
10.1021/cm800644y
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发表时间：
2008-07-22
影响因子：
8.6
通讯作者：
Bao, Zhenan
中科院分区：
文献类型：
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作者：
Tang, Ming L.;Reichardt, Anna D.;Bao, Zhenan
合成了一系列以并四苯并[2，3-B]噻吩和蒽并[2，3-B]噻吩为核的乙炔基取代分子。目的是研究不同体积的侧链取代基对薄膜中分子堆积的影响，从而研究其薄膜晶体管迁移率。使用三个R基团，即三异丙基-、三乙基-和三甲基甲硅烷基乙炔基。我们没有观察到取代基大小和TFT迁移率之间的直接相关性。然而，5，12-bis（三异丙基甲硅烷基乙炔基）并四苯并[2，3-B]噻吩的迁移率高达1.25 cm（2）/V。（三甲基甲硅烷基乙炔基）并四苯并[2，3-B]噻吩具有约0.00616 cm（2）/V. s的迁移率，而5，10-二（三乙基甲硅烷基乙炔基）蒽并[2，3-B]噻吩和5，10-双（三甲基甲硅烷基乙炔基）蒽并[2，3-B]噻吩具有10（-4）cm（2）/V的迁移率。S分别在苯基硅烷和十八烷基三氯硅烷处理的表面上。
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.