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以二噻吩(BT)和三联噻吩(TT)为单体,FeCl3为氧化剂,在不同n(FeCl3)/n(单体)比例下,通过固相反应法合成出了聚(二噻吩)(poly(BT))和聚(三噻吩)(poly(TT))。并以傅立叶变换红外光谱、紫外可见吸收光谱、X射线衍射、热重分析和透射电镜等测试方法对聚合物进行了表征,研究了不同n(FeCl3)/n(单体)比例对聚合物结构与性能的影响。结果表明,n(FeCl3)/n(BT)为4∶1和n(FeCl3)/n(TT)为8∶1时,所得聚合物相对于其它比例下的聚合物表现出了较高的分子量、共轭程度和热稳定。其中,poly(TT)的分子量、共轭程度、热稳定、结晶性等特性随单体与FeCl3比例发生明显变化,但在微观形貌上无明显变化,而poly(BT)则随单体与FeCl3比例变化结果与poly(TT)相反,只是在微观形貌上产生了一定的差异。
The poly (dithiophene) (poly (dithiophene) (poly (dithiophene)) was synthesized by the solid state reaction at different n (FeCl3) / n (BT)) and poly (TT). The polymers were characterized by Fourier transform infrared spectroscopy, UV-Vis absorption, X-ray diffraction, thermogravimetric analysis and transmission electron microscopy. The effects of different ratios of n (FeCl3) / n And the impact of performance. The results showed that when the ratio of n (FeCl3) / n (BT) was 4:1 and the ratio of n (FeCl3) / n (TT) was 8:1, the obtained polymer showed a higher molecular weight , Degree of conjugation and thermal stability. Among them, poly (TT) has obvious changes in molecular weight, conjugation degree, thermal stability and crystallinity with the ratio of FeCl3 to monomer, but there is no obvious change in the morphology of poly (TT) The results of the change of FeCl3 ratio are contrary to that of poly (TT), but there is a certain difference in the micro-morphology.