可溶性聚对苯乙炔衍生物的合成与表征

Synthesis and Characterization of Soluble Poly(p-phenylene Vinylene) Derivatives

用脱氯化氢法合成了4种聚对苯乙炔的衍生物.通过实验分析了催化剂和原料对中间产物以及聚合物产率的影响.通过红外、核磁等方法表征了聚合物的结构,通过热失重曲线表征了聚合物的热稳定性,从苯环上的烷氧基取代的侧链长度方面对聚合物热稳定性、溶解性和分子量进行了研究.

Four kinds of PPV derivatives with symmetrical and asymmetrical alkoxyl substitutes are prepared by dehydrochlorination process with p-methoxylphenol and p-diphenol as raw materials.They are poly（2-methoxy-5butyloxy-1,4-phenylenevinylene）,poly（2-methoxy-5-octyloxy-1,4-phenylenevinylene）,poly（2me-thoxy-5-（iso-octyloxy）-1,4-phenylenevinylene）,poly（2-methoxy-5-dodecyloxy-1,4-phenylenevinylene）.In comparison with PPV,the four kinds of PPV derivatives can resolve in some organic solvent.The influences of synthesis route and reaction conditions are investigated roughly.The structure of the four kinds of PPV derivatives are characterized with FTIR.The thermal stability and thermo performance are obtained from TG curves.The molecular weight is measured by GPC.