新型聚2,4-二乙烯基3-十二烷基噻吩-1,3,4-噁二唑交替共聚物的合成、表征及性能研究

Synthesis,characterization and optical properties of novel alternating 2,4-divinyl-3-dodecylthiophene-co-1,3,4-oxadiazole copolymer

采用Heck偶合法首次合成了新型的含有空穴传输单元3-十二烷基噻吩和电子传输单元1,3,4-噁二唑的低带隙能的聚2,4-二乙烯基-3-十二烷基噻吩-1,3,4-噁二唑共轭聚合物(P3DDTV-OXD)。并且通过1H-NMR、FT-IR、凝胶色谱(GPC)、UV-vis光谱、荧光光谱(PL)、循环伏安(CV)法对所合成的共聚物进行了分析表征。与规整的聚3-十二烷基噻吩均聚物(P3DDT)相比,共聚物的UV最大吸收波长和Pl最大发射波长明显蓝移,具有强烈的蓝色荧光,且电子亲和势较高,同时拥有空穴和电子传输能力,实现了电荷在分子内的双向传输。

The novel low band gap conjugated polymer, which consisted of an electron-donating 3-dodecylthiophene unit and an electron-accepting 1, 3, 4-oxadiazole unit, was synthesized through Heck Couple approach. The obtained copolymer was effectively characterized using ^1 H-NMR, FT-IR, gel permeation chromatography （GPC）, UV-vis spectroscopy, photoluminescence （PL）, as well as cyclic voltammetry （CV）. Compared to regioregular poly（3-dodecylthiophene） h mopolymer, the UV-vis maximum absorption and P1 maximum emission wavelength of the conjugated polymer extended to blue region effectively. In addition, Electron affinity of the conjugated polymer was comparatively high. The copolymer had both hole and electron charge carriers in possession of mutual transmission property.