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首页> 外文期刊>Advanced Functional Materials >Highly Emissive and Electrochemically Stable Thienylene Vinylene Oligomers and Copolymers: An Unusual Effect of Alkylsulfanyl Substituents
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Highly Emissive and Electrochemically Stable Thienylene Vinylene Oligomers and Copolymers: An Unusual Effect of Alkylsulfanyl Substituents

机译：高发射率和电化学稳定性的亚噻吩乙烯低聚物和共聚物：烷基硫烷基取代基的不寻常作用

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摘要

The synthesis, unexpected efficient photoluminescence, and reversible electrochemical p- and n-doping of new conjugated thienylene vinylene materials functionalized with alkylsulfanyl substituents poly(trithienylene vinylene) (PTTV) and poly(dithienylvinyl-co-benzothiadiazole) (PDTVB) along with dithienylvinylene-based oligomers is reported. The materials are studied by thermal and X-ray diffraction analysis, optical spectroscopy, cyclic voltammetry, and spectroelectrochemistry. Organic field-effect transistors (OFETs) are fabricated with PTTV and PDTVB. The polymers, prepared by Stifle polycondensation, exhibit good thermal stability and a photoluminescent quantum yield in the range 34%-68%. Low bandgaps (1.5-1.8 eV), estimated by optical and electrochemical measurements along with high stability of both redox states, suggest that these structures are promising materials for photovoltaic applications. OFETs fabricated with PDTVB reveal a hole mobility of 7 × 10~(-3)cm~2 V~(-1) s~(-1) with on/off ratio 10~5, which are comparatively high values for completely amorphous polymer semiconductors.
机译：新型，共轭噻吩亚乙烯基材料的合成，出乎意料的有效光致发光以及可逆的电化学p和n掺杂，这些新的共轭亚噻吩亚乙烯基材料经烷基硫烷基取代基聚（ththienylene亚乙烯基）（PTTV）和聚（二噻吩乙烯基乙烯基-co-苯并噻二唑）（PDTVB）以及二噻吩乙烯基乙烯基报告了基于低聚物的低聚物。通过热和X射线衍射分析，光谱学，循环伏安法和光谱电化学对材料进行了研究。有机场效应晶体管（OFET）由PTTV和PDTVB制成。通过Stifle缩聚制备的聚合物表现出良好的热稳定性和34％-68％的光致发光量子产率。通过光学和电化学测量得出的低带隙（1.5-1.8 eV）以及两种氧化还原态的高稳定性表明，这些结构是用于光伏应用的有前途的材料。用PDTVB制备的OFETs的空穴迁移率为7×10〜（-3）cm〜2 V〜（-1）s〜（-1），开/关比为10〜5，对于完全无定形聚合物来说是较高的值半导体。

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  • 来源
    《Advanced Functional Materials》 |2010年第10期|P.1661-1669|共9页
  • 作者

    Shehzad Jeeva; Olena Lukoyanoua; Athan Karas; Afshin Dadvand; Federico Rosei; Dmitrii F. Perepichka;

  • 作者单位

    Department of Chemistry McGill University Montreal, Quebec, H3A 2K6 (Canada);

    rnDepartment of Chemistry McGill University Montreal, Quebec, H3A 2K6 (Canada);

    rnDepartment of Chemistry McGill University Montreal, Quebec, H3A 2K6 (Canada);

    rnDepartment of Chemistry McGill University Montreal, Quebec, H3A 2K6 (Canada);

    rnCentre Energie, Materiaux et Telecommunications Institut National de la Recherche Scientifique Varennes Quebec J3X 1S2 (Canada) Centre for Self-Assembled Chemical Structures McGill University Montreal, Quebec, H3A 2K6 (Canada);

    rnDepartment of Chemistry McGill University Montreal, Quebec, H3A 2K6 (Canada) Centre Energie, Materiaux et Telecommunications Institut National de la Recherche Scientifique Varennes Quebec J3X 1S2 (Canada) Centre for Self-Assembled Chemical Structures McGill University Montreal, Quebec, H3A 2K6 (Canada);

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