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研究了在不同条件下以 Ni Cl2 (bpy)为催化剂的对二溴苯与间二溴苯间的共缩聚反应 .利用该反应可以合成出数均分子量为 2 40 0的一系列共聚物 ,而且部分试样在有机溶剂中具有良好的溶解性 .红外光谱和紫外光谱分析表明 :在共聚物中存在着对苯撑与间苯撑结构单元 .DSC、TGA和 X ray分析表明 :随着共聚物中间苯撑结构单元的增加 ,聚苯撑共聚物的玻璃化转移温度、粘流温度和结晶度降低 .共聚物的四氢呋喃溶液的荧光光谱分析表明 :发射光谱的最大值处于 3 73～ 3 76nm处 .而同一试样的膜 ,该值位移到 40 5～ 43 6nm处 .
The copolycondensation reaction of p-dibromobenzene and m-dibromobenzene with Ni Cl2 (bpy) as catalyst has been studied. A series of copolymers with number-average molecular weight of 2,400 can be synthesized by this reaction. Some samples have good solubility in organic solvents.FTIR and UV spectroscopy showed that there were p-phenylene and m-phenylene units in the copolymer.DSC, TGA and X-ray analysis showed that with the copolymer The increase of the middle phenylene structure units, the glass transition temperature of the polyphenylene copolymer, the viscous flow temperature and the crystallinity decrease.The fluorescence spectra of the copolymer in tetrahydrofuran show that the maximum of the emission spectrum is in the range of 3 73 ~ 3 76nm The same sample film, the value of displacement to 40 5 ~ 43 6nm place.