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

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、1 H-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、473nm和470nm。其中Th-PE-6和Th-PE-8具有较好的电化学性能,在-0.2～0.8V均出现3对氧化还原峰。

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-f,Th PE 8,Th-PE-10,Th PE 12 were prepared by Sonogashira coupling reaction, which were characterized by FT IR, 1 H-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 PI. emission at 467, 473, 470 nm, respec tively. Th PE 6, Th-PE-8 showed good electrochemical performance with three redox peaks from --0.2 to 0.8V.