关键词: 共轭聚合物, 邻苯二酚衍生物, 聚丙烯酸, 电化学交联反应, 交联网状膜

Abstract:

Two novel acrylate functionalized monomers o-phenylene diacrylate(o-PDA) and 2-methoxyphenyl acrylate(2-MOPA) were designed and synthesized. Through radical copolymerization of o-PDA/2-MOPA with acrylic acid(AA), two precursor polymers, oligo(o-phenylene diacrylate-co-acrylic acid)(O1) and oligo (O2) were obtained. Cross-linked poly(O1-co-o-dihydroxybenzene)(P1) and poly(O2-co-1-hydroxy-2-methoxybenzene)(P2) films were achieved by electrochemical polymerization of monomer mixtures of o-DHB-O1 and HMOB-O2, respectively. UV-Vis, FTIR and ¹H NMR spectra were used to characterize the structures of the copolymers. Since AA and o-DHB/HMOB were introduced into the polymerization processes, the steric hindrance of the monomers were weakened extremely, and the copolymers were synthesized via two-step polymerization. The copolymers show good electrochemical activities and mechanical properties. According to the fluorescence spectra, the copolymers show strong emission peaks at 415 and 487 nm, indicating the good blue-light emmitting properties of the copolymers and that the introductions of polyacrylate structures into the copolymers have little negative effect on their fluorescence pro-perties. TGA analysis suggests that as-formed copolymers exhibit high thermal stability.

Key words: Conjugated polymer, 1,2-Dihydroxylbenzene derivative, Polyacrylate, Electrochemical oxidation cross-linking reaction, Intercrossed network film