Structure and conductive properties of polythiophenes andpoly(3octylthiophene) （Chinese）
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摘要: 采用化学氧化法在不同温度下制备聚噻吩和聚3辛基噻吩，通过红外光谱（FTIR）, X衍射分析（XRD），核磁共振谱图（NMR），X光电子能谱（XPS）和紫外可见光谱（UVVis）等手段对聚合物进行了研究.结果表明，聚噻吩侧链基团和制备温度会影响聚合物的构型结构，引起聚合物结晶度的变化.聚3-辛基噻吩结晶度最低，低温制备的聚噻吩结晶度最高.导电性能研究表明，聚噻吩的构型结构和结晶度直接影响其电导率.Abstract: Polythiophene and Poly(3octylthiophene) were synthesized by direct oxidative polymerization under different temperatures. The chemical structure of samples were characterized by FTIR, XRD, NMR,XPS and UVVis respectively. The results showed that the strcture and the degree of crystallinity(DC) of samples depended on the length of side chain and reaction temperature. Poly(3octylthiophene) has a lower DC.Polythiophene prepared under low temperature has a higher DC. Experimental results suggested that there is certain relationship between DC, chemical structure and conductivity of samples.
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