可溶性聚吡咯甲烯衍生物的制备与表征

Synthesis and Characterization of Soluble Poly(Pyrrole Methine) Derivative

采用逐步分子设计思想,制备了一种溶解性、成膜性优良的聚{(3-丙酰基)吡咯-[2,5-二(对十四烷氧基苯甲烯)]}(PPPDTBE),并对PPPDTBE的分子结构和性能进行表征与分析。热失重曲线显示,PPPDTBE的热分解过程分为两个阶段,分别对应丙酰基和对十四烷氧基苯基的分解。紫外-可见吸收光谱表明,PPPDTBE氯仿溶液和薄膜在450 nm^550 nm具有显著的光学吸收,共轭吸收峰分别位于480 nm和486 nm。此外,PPPDTBE薄膜的光学带隙和电化学带隙分别为1.81 eV和1.23 eV。

A poly {（3-propionyl） pyrrole-[2,5-diyl（p-tetradecoxybenzylidene）]}（PPPDTBE） that had excellent solubility and film forming ability was synthesized by gradual molecular design method and its molecular structure and property were also characterized and analyzed.Thermogravimetric Analysis（TGA） curve indicates that PPPDTBE is decomposed mainly by two steps,which correspond to the fracture of propionyl group and tetradecoxyphenyl group,respectively.The optical absorption of PPPDTBE in CHCl3 solution and film is broad in the wavelength range of 450 nm～550 nm and the absorption peaks are located at around 480 nm and 486 nm,respectively.Moreover,the optical band gap and the electrochemical band gap are 1.81 eV and 1.23 eV,respectively.