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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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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 ), H _(3) BO _(3) , 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, ~(1) H, ~(13) C-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 ( E ~(opt) _(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 °C. Based on CV analysis, the HOMO and LUMO energy levels and the electrochemical band gap ( E ~(cv) _(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 × 10 ~(?5) S cm ~(?1) and 5.9 × 10 ~(?5) S cm ~(?1) , respectively.
机译：为了提高聚（咔唑-Thiazolo [5,4-D]噻唑）（P-CZTT）的电导率（P-CZTT），五种不同的掺杂剂，如HCl，Fe（III），Cu（II），H _（3）Bo _（3）和I _（2），通过氮原子的质子化引入其框架或通过复杂的形成。通过咔唑醛和二硫代胺的反应合成咔唑 - 噻唑（CZTT）和聚（咔唑 - 噻唑[5,4-D]噻唑）（P-CZTT）。通过FT-IR，UV-Vis，〜（1）H，〜（13）C-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（E〜（opt）_（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能量水平和电化学带隙（E〜（CV）_（G））分别为α.5.86eV，？3.19eV和2.67eV。 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）Scm〜（α1）和5.9×10〜（？5）厘米〜（？1）分别。

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