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首页> 外文期刊>ACS Macro Letters >Drastic Effects of Fluorination on Backbone Conformation of Head-to-Head Bithiophene-Based Polymer Semiconductors
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Drastic Effects of Fluorination on Backbone Conformation of Head-to-Head Bithiophene-Based Polymer Semiconductors

机译:氟化对基于头对二硫代丙基聚合物半导体的骨干构象的激烈影响

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摘要

This study shows that the backbone conformation of head-to-head type 3,3'-dialkyl-2,2'-bithiophene can be tuned via fluorination of the neighboring benzothiadiazole (BTz). Without fluorination, the polymer backbone is highly twisted, whereas difluorination of BTz produced a coplanar backbone. Monofluorination of BTz yielded a tunable polymer backbone conformation depending on the film annealing temperature. In organic thin-film transistors, the polymer with the head-to-head linkages showed a remarkable hole mobility of 0.5 cm(2) V-1 s(-1) upon attaining a planar backbone. Thus, the head-to-head linkage does not necessarily lead to backbone nonplanarity, and achieving planar conformation of 3,3'-dialkyl-2,2'-bithiophene has profound implications in materials design for organic semiconducting devices, yielding good solubility, reduced materials synthetic steps, and improved opto-electrical properties.
机译:该研究表明,通过邻近苯并噻唑(BTZ)的氟化可以通过氟化来调谐头部到头型3,3'-二烷基-2,2'-二苯基烯的骨干构象。 没有氟化,聚合物主链高度扭曲,而BTZ的二氟化产生共面骨架。 基于薄膜退火温度,BTZ的单氟化物产生可调谐聚合物骨干构象。 在有机薄膜晶体管中,具有头部到头部连杆的聚合物在获得平面骨架时显示出& 0.5cm(2)V-1s(-1)的显着空穴迁移率。 因此,头部到头部连杆不一定导致骨干不平性,并且实现3,3'-二烷基-2,2'-二甲苯烯的平面构象在有机半导体装置的材料设计中具有深远的影响,从而产生良好的溶解度, 降低材料合成步骤,改进的光学性能。

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  • 来源
    《ACS Macro Letters》 |2018年第5期|共11页
  • 作者单位

    SUSTC Dept Mat Sci &

    Engn 1088 Xueyuan Rd Shenzhen 518055 Guangdong Peoples R China;

    SUSTC Dept Mat Sci &

    Engn 1088 Xueyuan Rd Shenzhen 518055 Guangdong Peoples R China;

    Korea Univ Dept Chem Seoul 136713 South Korea;

    SUSTC Dept Mat Sci &

    Engn 1088 Xueyuan Rd Shenzhen 518055 Guangdong Peoples R China;

    SUSTC Dept Mat Sci &

    Engn 1088 Xueyuan Rd Shenzhen 518055 Guangdong Peoples R China;

    SUSTC Dept Mat Sci &

    Engn 1088 Xueyuan Rd Shenzhen 518055 Guangdong Peoples R China;

    SUSTC Dept Mat Sci &

    Engn 1088 Xueyuan Rd Shenzhen 518055 Guangdong Peoples R China;

    Korea Univ Dept Chem Seoul 136713 South Korea;

    SUSTC Dept Mat Sci &

    Engn 1088 Xueyuan Rd Shenzhen 518055 Guangdong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 有机化学;
  • 关键词

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