新型p-/n-掺杂型交替共聚物的合成及其光电性能的研究

本文通过Heck偶联法制备一种新型p-/n-掺杂型电致发光材料--3-十二烷氧基噻吩-共-1，3，4-噁二唑交替聚合物(P3DDOTV-OXD), 用核磁共振（1H NMR）及凝胶色谱（GPC）对结构进行了分析表征。用紫外光谱（Uv-vis）、荧光光谱法及电化学分析法对其光电学性能进行了研究。结果表明：聚合物的重均分子量为：5287，在氯仿溶液中，聚合物的紫外最大吸收波长为314nm，在401nm处发射出明亮的蓝光；较其均聚物（516nm）蓝移了115nm。 循环伏安测定结果表明: P3DDOTV-OXD在正、负向区域分别出现了一对氧化还原峰对，电子亲和能（Ia）为：2.88eV，有利于电子从阴极的注入。3-十二烷氧基噻吩-共-噁二唑交替共聚物实现了集空穴、电子双向传输为一体的高性能的聚合物光电功能材料的性能要求。

Synthesis, Characterization, Electronic and Optical Properties of A Novel p-/n alternating Copolymer

A novel p-/n-alternating 3-dodecyloxythiophene-co-1，3，4-Oxadiazole was synthesized by Heck coupling method and characterized by 1H NMR and gel permeation chromatography (GPC). The electrochemical and optical properties were investigated using cyclic voltammetry，UV-vis spectroscopy and photoluminescence (PL). The UV-vis maxima absorption was at 314nm and PL emission maxima was at 401nm in CHCl3 solution and transmitted bright blue color with the weight average of 5287. The PL emission maxima is blue-shifted 115nm in comparing to the homopolymer (516nm) in solution. In the cyclic voltammetry measurements, 3-dodecyloxythiophene-co-1，3，4-oxadiazole copolymer shows reversible n- and p-doping processes. The electron affinity (Ea) value is at -2.88ev, which will facilitate the electron injection from cathode. The facts imply that this alternation 3-dodecyloxythiophene-co-1，3，4-oxadiazole copolymer might be promising polymer for high performance OLED materials with hole-electron recombination.