8-羟基喹哪啶-丙烯酸-镓(Ⅲ)与甲基丙烯酸甲酯共聚物的光致发光研究

Study on Photoluminescence of 8-Hydroxyquinaldine Gallium Acrylate and Methyl Methacrylate Copolymer

制备了8-羟基喹哪啶、丙烯酸与镓(Ⅲ)的三元配合物,将此配合物与甲基丙烯酸甲酯共聚后得到一种含镓(Ⅲ)的共聚物,这种共聚物易溶于氯仿、丙酮等普通低沸点溶剂,具有良好的成膜性能。通过红外光谱、元素分析、紫外光谱等方法对三元配合物和共聚物的组成进行了表征。三元配合物和共聚物的荧光光谱测试,表明共聚物在496nm处能发出较强的荧光。

A new copolyrner of 8-hydroxyquinaldine gallium acrylate and methyl methacrylate was prepared. The composition and properties of the copolyrner were characterized by FTIR, UV-Vis, DSC, TG and fluorescence spectra. A strong blue-green photoluminescence, with the peak at 496 nm, was observed for the copolyrner/CHCl3 solution. Effect of monomer ratio and concentration on the photoluminescence property of the copolyrner was investigated. The results showed that the maximum fluorescence intensity was attained when Ga（Mq）2 A ： MMA was 1 ： 20, the maximum excitation wavelength is approximately 263 nm when the concentration of the copolymer is under 2 g · L^-1 , but the maximum excitation wavelength exceeds 365 nm when the concentration is above 4 g · L^-1. The copolyrner was soluble in chloroform, acetone, and DMF at 25℃, so it could be easier to prepare electroluminescent device by spin-coat technology.