:采用 Scholl反应 ,以硝基苯作溶剂 ,无水三氯化铁为催化剂 ,合成了系列可溶性烷氧基对称二取代的聚对苯撑 (DAO- PPP) ,并用多种手段对其结构进行了表征 ,研究了聚合物的光致发光性能。实验表明 ,烷氧基的引入不但明显改善了 PPP的溶解加工性能 ,而且随烷氧基侧链链长的改变 ,聚合物的最大紫外吸收峰、带隙 Eg、光致发光(PL)最大发射峰及其发射强度都呈现规律性的变化 ,文中对此进行了初步的探讨 : A series of symmetrically disubstituted poly (p-phenylene valence) (DAO-PPP) of alkoxy group were synthesized by Scholl reaction using nitrobenzene as solvent and anhydrous ferric chloride as catalyst, and its structure was carried out by various means Characterization, the photoluminescence properties of the polymer. Experiments show that the introduction of alkoxy can not only significantly improve the PPP processability, but also with the alkoxy side chain length changes, the maximum absorption peak of the polymer, bandgap Eg, PL maximum emission The peak and its emission intensity showed a regular change, this article conducted a preliminary discussion