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采用Fe(III)催化剂合成法合成聚3-丁基噻吩(P3BT)、聚3-己基噻吩(P3HT)和聚3-十二烷基噻吩(P3DDT)。用GPC和1 H-NMR对所合成的聚合物的相对分子质量和结构进行表征,用SEM对所合成的聚合物的表面形貌进行观察,并用紫外-可见吸收光谱和荧光光谱研究3种聚合物氯仿溶液的光学性能。结果表明,用该方法合成的聚合物以非晶态形式存在;具有较高的相对分子质量;在氯仿溶液中,P3BT、P3HT、P3DDT的最大吸收峰分别为:436nm、437nm和430nm,最大发射峰分别为570.0nm、581.2nm和573.8nm。综合分析发现P3HT更适于用做聚合物太阳能电池材料。
Poly-3-butylthiophene (P3BT), poly-3-hexylthiophene (P3HT) and poly-3-dodecylthiophene (P3DDT) were synthesized by Fe (III) The relative molecular mass and structure of the synthesized polymer were characterized by GPC and1H-NMR. The surface morphology of the synthesized polymer was observed by SEM. The three kinds of polymerization were studied by ultraviolet-visible absorption spectroscopy and fluorescence spectroscopy Optical properties of chloroform solution. The results show that the polymer synthesized by this method exists in amorphous form and has relatively high molecular weight. The maximum absorption peaks of P3BT, P3HT and P3DDT in chloroform are 436nm, 437nm and 430nm, respectively. The maximum emission Peaks were 570.0 nm, 581.2 nm and 573.8 nm, respectively. Comprehensive analysis found that P3HT is more suitable for use as a polymer solar cell material.