新型侧链含亚胺噻吩类共聚物的合成与性能

Synthesis and Performance of New Type Thiophene Copolymers of Side Chain Including Imine

摘要: 通过Schiff-base法合成了侧链含亚胺的新型噻吩类单体2，5-二溴-3-［(芴-2-基)亚胺次甲基］噻吩。以Pd(PPh3)2Cl2和CuI为催化剂，经Sonogashira偶联合成了4种新型共轭共聚物Th-PE-6、Th-PE-8、Th-PE-10、Th-PE-12。经FT-IR、1H-NMR、UV-Vis、循环伏安(CV)和凝胶渗透色谱(GPC)等测试手段对其进行了表征。结果表明: 共聚物Th-PE-8、Th-PE-10、Th-PE-12在四氢呋喃溶液中发黄绿光，最大发射峰分别位于467、473 nm和470 nm。其中Th-PE-6 和Th-PE-8具有较好的电化学性能，在-0.2～0.8 V均出现3对氧化还原峰。

Abstract: A new thiophene monomer of side chain including imine 2,5-dibromo-3-(fluorene-2-amine) methyl thiophenes was synthesized by Schiff-base reaction using Pd(PPh3)2Cl2 and CuI as catalyst. Four new conjugate copolymers Th-PE-6,Th-PE-8,Th-PE-10,Th-PE-12 were prepared by Sonogashira coupling reaction, which were characterized by FT-IR, 1H-NMR, UV-Vis, cyclic voltammogram (CV) and gel permeation chromatography (GPC). Results showed that the copolymer Th-PE-8, Th-PE-10, Th-PE-12 which emitted yellow-green light in THF solution had maximum PL emission at 467、 473、 470 nm, respectively. Th-PE-6, Th-PE-8 showed good electrochemical performance with three redox peaks from -0.2 to 0.8 V.