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首页> 外文期刊>RSC Advances >Synthesis of carbazole-based copolymers containing carbazole-thiazolo[5,4-d]thiazole groups with different dopants and their fluorescence and electrical conductivity applications
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Synthesis of carbazole-based copolymers containing carbazole-thiazolo[5,4-d]thiazole groups with different dopants and their fluorescence and electrical conductivity applications

机译：用不同掺杂剂及其荧光和电导率应用的咔唑-Thiazolo [5,4-D]噻唑基团的咔唑基共聚物的合成

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摘要

To improve the electrical conductivity of poly(carbazole-thiazolo[5,4-d] thiazole) (p-CzTT), five different dopants, such as HCl, Fe(III), Cu(II), H3BO3, and I-2, were introduced into its framework through protonation of a nitrogen atom or by complex formation. Carbazole-thiazolo[5,4-d] thiazole (CzTT) and poly(carbazole-thiazolo[5,4-d] thiazole) (p-CzTT) were synthesized by the reactions of carbazole aldehydes and dithiooxamide. The synthesized monomer and polymer were confirmed by FT-IR, UV-vis, H-1, C-13-NMR, and GPC studies. The doped polymers were examined by FT-IR spectroscopy, UV-visible absorption, fluorescence, thermogravimetric analysis (TGA), cyclic voltammetry (CV), and electrical conductivity. The optical band gap (Eopt g) of CzTT and p-CzTT were found to be 2.74 eV and 1.95 eV, respectively. The thermal stability of the polymer showed 5% weight loss at 358 degrees C. Based on CV analysis, the HOMO and LUMO energy levels and the electrochemical band gap (Ecv g) of p-CzTT were obtained as -5.86 eV, -3.19 eV, and 2.67 eV, respectively. The CzTT and p-CzTT exhibited fluorescence emission at 461 nm and 448 nm, respectively. Among the dopants introduced, Fe(III)-and I-2-doped polymer showed excellent electrical conductivities of 6.8 x 10(-5) S cm(-1) and 5.9 x 10(-5) S cm(-1), respectively.
机译：为了提高聚（咔唑 - 噻唑醇[5,4-D]噻唑）（P-CZTT）的电导率，五种不同的掺杂剂，如HCl，Fe（III），Cu（II），H3BO 3和I-2 ，通过氮原子的质子化引入其框架中或通过复杂的形成。通过咔唑醛和二硫甲酰胺的反应合成咔唑-Thiazolo [5,4-D]噻唑（CZTT）和聚（咔唑 - 噻唑[5,4-D]噻唑）（P-CZTT）。通过FT-IR，UV-Vis，H-1，C-13-NMR和GPC研究证实了合成的单体和聚合物。通过FT-IR光谱，UV可见吸收，荧光，热重分析（TGA），循环伏安法（CV）和导电性检查掺杂的聚合物。发现CZTT和P-CZTT的光带隙（Eopt G）分别为2.74eV和1.95eV。聚合物的热稳定性在358℃下显示出5％的重量损失。基于CV分析，获得P-CZTT的HOMO和LUMO能级和电化学带隙（ECV G）为-5.86eV，-3.19eV和2.67ev分别。 CZTT和P-CZTT分别在461nm和448nm处表现出荧光发射。引入的掺杂剂中，Fe（III） - 和I-2掺杂的聚合物显示出优异的电导率为6.8×10（-5）Cm（-1）和5.9×10（-5）Cm（-1），分别。

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  • 来源
    《RSC Advances》 |2016年第73期|共10页
  • 作者

    Sathiyan Govindasamy; Thangamuthu Rangasamy; Sakthivel Pachagounder;

  • 作者单位

    VIT Univ Sch Adv Sci Dept Chem Vellore 632014 Tamil Nadu India;

    Cent Electrochem Res Inst CSIR Electrochem Mat Sci Div Karaikkudi 630003 Tamil Nadu India;

    VIT Univ Sch Adv Sci Dept Chem Vellore 632014 Tamil Nadu India;

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