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题名: Benzobisthiadiazole-alt-bithiazole copolymers with deep HOMO levels for good-performance field-effect transistors with air stability and a high on/off ratio
作者: Zhang, Chen1; Zhang, Ji2; Zeng, Weixuan1; Zheng, Naihang2; Li, Wei1; Gao, Wei1; Yu, Gui2; Yang, Chuluo1
刊名: POLYMER CHEMISTRY
发表日期: 2016
卷: 7, 期:16, 页:2808-2814
收录类别: SCI
英文摘要: Benzobisthiadiazole (BBT) is a widely used building block for its high electron affinity and planar configuration. BBT-based copolymers have resulted in good performance of organic field-effect transistors (OFETs). However, devices of these polymers are usually unstable in ambient air since most of these BBT-based polymers have high-lying HOMO energy levels (-4.3 to -4.8 eV). Besides, the field-effect transistors (FET) of BBT-based polymers show relatively low on/off ratios (10(2)-10(4)). As a result, it is very attractive to couple BBT with an electron-deficient block to construct new polymers with air stability. 2,2'-Bithiazole (BTz) is a potential building block due to its electron deficiency and trans-planar configuration. But incorporating 2,2'-bithiazole into polymers still remains a challenge since the organic tin compound of bithiazole is difficult to synthesize. In this article, we successfully prepared 5,5'-bis(trimethylstannyl)-2,2'-bithiazole by a three-step method and then synthesized two benzobisthiadiazole-alt-bithiazole copolymers (P1 and P2). Both P1 and P2 have a low-lying HOMO energy level (-5.3 eV), leading to air stability. Moreover the resulting FETs exhibit a very high on/off ratio (10(5)-10(7)) and a good hole mobility of up to 0.11 cm(2) V-1 s(-1), which represents a significant advancement for BBT-containing polymers.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/36107
Appears in Collections:有机固体实验室_期刊论文

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作者单位: 1.Wuhan Univ, Dept Chem, Hubei Key Lab Organ & Polymer Optoelect Mat, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China
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