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采用Suzuki缩合聚合方法,将4,6-苯并噻二唑单元引入到聚合物中,合成了4,6-苯并噻二唑-咔唑共聚物P1,研究了其光学性质和电化学性质.结果表明,与4,7-位结构类似物(HBC)相比,P1在Mn=12000时仍易溶于甲苯,二氯甲烷等一般的有机溶剂中;其薄膜状态时的紫外吸收光谱和光致发光光谱分别蓝移78和43 nm;光学带宽和电化学带宽分别增大0.35和0.40 e V,而循环伏安曲线的形状不变;说明4,6-位苯并噻二唑单元的引入,有效地改善了苯并噻二唑类聚合物的溶解性能,调节了光电性能,但保留了苯并噻二唑单元优异的电化学稳定性和可逆性.4,6-位苯并噻二唑单元的引入为实现苯并噻二唑类聚合物材料的多性能调节提供了一种新的手段和方法.
Suzuki condensation polymerization was used to introduce 4,6-benzothiadiazole into the polymer. The 4,6-benzothiadiazole-carbazole copolymer P1 was synthesized and its optical and electrochemical properties were studied The results showed that P1 was easily soluble in common organic solvents such as toluene and dichloromethane when compared with 4,7-analogs (HBC) at Mn = 12000. The UV absorption spectra and light The luminescence spectra were shifted blue by 78 and 43 nm, respectively. The optical and electrochemical bandwidths increased by 0.35 and 0.40 eV, respectively, while the shape of the cyclic voltammetry curve remained unchanged. This indicated that introduction of 4,6-benzothiadiazole units , Which can effectively improve the solubility of benzothiadiazole polymers and adjust the photoelectric properties, but retain the excellent electrochemical stability and reversibility of benzothiadiazole units. The introduction of azole units provides a new method and method for the multi-performance regulation of benzothiadiazole polymer materials.