对苯二胺类与2,2′-二噻吩共轭共聚物的金属催化法合成与表征

Synthesis and Characterization of the Conjugated Copolymers of p-PhenylenediamineBased and 2,2′-Dithiophene Catalyzed by Metal Complexes

摘要: 以1,3-二(二苯基膦)丙烷二氯化镍(Ⅱ)作为催化剂，分别合成了2,2′-二噻吩与N,N′-二氯对苯醌二亚胺和2,5-二甲基-N,N′-二氯对苯醌二亚胺的共轭交替共聚物：聚（N,N′-对苯醌二亚胺-2,2′-二噻吩）和聚（2,5-二甲基-N,N′-对苯醌二亚胺-2,2′-二噻吩）。利用红外光谱、紫外可见光谱、循环伏安等测试方法对这2种共聚物进行了表征和性能研究。结果表明：这2种共聚物分别在263、315、410、261、321、403 nm处出现了紫外吸收峰，对苯二胺上的甲基对共聚物电化学活性具有一定的影响。

Abstract: The alternative copolymers of poly(N,N′-p-benzoquinonediimine-co-2,2′-dithiophene) and poly(2,5-dimethyl-N,N′-p-benzoquinonediimine-co-2,2′-dithiophene) were synthesized using nickel (Ⅱ) complex as catalyzer. The obtained copolymers were characterized by FT-IR, UV-Vis spectra and cyclic voltammograms. Results show that these two copolymers give UV-Vis absorption peaks at 263, 315, 410, 261, 321, 403 nm, respectively. The substituted groups of methyl on p-phenylenediamine affect the electrochemical activity of copolymer.