无水三氯化铝催化聚苯乙炔的制备及荧光性能研究

使用无水ALCL3作为催化剂，通过本体聚合制备出具有良好荧光性能的聚苯乙炔，并用FT-IR。UV-Vis,PL对聚合物结构、性能进行了表征，研究了催化剂用量对聚合物分子量及荧光光谱的影响．结果发现，减少催化剂用量可使分子量增加，主链共轭体系增大，在紫外光谱和荧光光谱上表现出红移现象．另外，当选用不同波长(300、350、400nm)的光激发时，其荧光发射峰依次红移，说明所得聚苯乙炔可能含有多种异构链结构，存在不同的发光点．

FLUORESCENCE PROPERTIES AND SYNTHESIS OF POLYPHENYLACETYLENE CATALYZED BY ANHYDROUS AlCl3

Polyphenylacetylene(PPA) with better fluorescence properties was synthesized by using anhydrous AlCl3 as catalyst. Structure and performance of the polymer were characterized by FT- IR, UV-vis and PL. The effects of amount of catalyst on molecular weight and fluorescence spectra of the polymer were studied. The results showed that, as the amount of catalyst decreases, molecular weight and conjugate system increases, red - shift appears in UV - vis and PL spectra. In addition, the fluorescence emission peaks red - shifted when the different excitation wavelength (from 300 nm to 400 nm) were used, which showed that the synthesized PPA possibly contained multi - chain structure and different light - emitting points.