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Platinum-Based Poly(Aryleneethynylene) Polymers Containing Thiazolothiazole Group with High Hole Mobilities for Field-Effect Transistor Applications

Authors

  • Lei Yan,

    1. College of Chemistry and Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, P. R. China
    2. Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, P. R. China
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  • Yan Zhao,

    1. Key Laboratory of Organic Solid, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Xiaohui Wang,

    1. College of Chemistry and Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, P. R. China
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  • Xing-Zhu Wang,

    Corresponding author
    1. College of Chemistry and Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, P. R. China
    • College of Chemistry and Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, P. R. China
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  • Wai-Yeung Wong,

    Corresponding author
    1. Institute of Molecular Functional Materials and Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China
    • Institute of Molecular Functional Materials and Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, P. R. China
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  • Yunqi Liu,

    Corresponding author
    1. Key Laboratory of Organic Solid, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
    • Key Laboratory of Organic Solid, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
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  • Weiping Wu,

    1. Key Laboratory of Organic Solid, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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  • Qingzhen Xiao,

    1. College of Chemistry and Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, P. R. China
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  • Guo Wang,

    1. College of Chemistry and Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, P. R. China
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  • Xuan Zhou,

    1. College of Chemistry and Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, P. R. China
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  • Wei Zeng,

    1. College of Chemistry and Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, P. R. China
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  • Chengxi Li,

    1. College of Chemistry and Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, P. R. China
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  • Xiaoyu Wang,

    1. College of Chemistry and Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, P. R. China
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  • Hongbin Wu

    1. Institute of Polymer Optoelectronic Materials and Devices and State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
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Abstract

Two solution-processable platinum-acetylide polymers functionalized with the electron-deficient thiazolothiazole spacer are synthesized and show absorption features spanning from 320 to 600 nm and optical bandgaps of 2.15 and 2.05 eV. The spin-coated polymer thin films of both materials exhibit p-channel field-effect charge transport characteristics with impressive peak field-effect charge-carrier mobilities of (2.1–2.8) × 10−2 cm2 V−1 s−1 and on/off ratios of (0.8–1.0) × 105 for the holes. The high hole mobility value reported for one of the polymers is among the highest reported for metallopolyynes to date. It is also shown that the hole mobility can be notably increased by extending the conjugation length of the chain from the monothienyl to the bithienyl segment on each side of the thiazolothiazole ring.

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