可溶性聚对二乙炔苯的合成与表征

一些π-共轭高聚物由于具有优良的荧光性能或三阶非线性光学性能而引起了人们极大的兴趣,合成新型可溶性π-共轭高聚物的研究已成为近年来的研究热点.对二乙炔苯的聚合研究已有报道.     

碳/碳复合材料新基体—聚芳基乙炔研究Ⅰ.芳基乙炔的合成与表征

用溴化—脱溴化氢一步法制备二乙炔基苯，研究碱、催化剂、反应温度及反应时间等因素对产率的影响。结果表明，以聚乙二醇－４００为相转移催化剂，二乙炔基苯的产率达６８．６％。用气相色谱、红外光谱、核磁共振和质谱对产物进行了分析表征。     

Vinyl Polymerization by Carbon Black. II. Modification of Carbon Black and Its Use in the Polymerization of N-Vinylcarbazole

Modification of carbon black N220, ISAF-HM, by aprotonic and protonic acids uniquely improves its catalytic activity in relation to the polymerization of N-vinylcarbazole. The polymerization is first order in monomer and directly proportional to the weight of the catalyst. However, the molecular weights of the polymer do not depend significantly on the nature of the modification. Heat treatment of the catalysts at 500°C reduces the yield of polymer drastically. The activation energy of the polymerization by unmodified carbon black is 83 kJ/mol as compared to 71 kJ/mol for the modified catalyst. Modification by dialkylzinc (0.1 to 0.4 M) produces stereoregularity as indicated by the MEK insolubility of the polymer.