摘要
设计合成了一系列含有噻吩结构和2,3-位不同取代官能团的吲哚结构的新型功能单体及其它们对应的聚合物,通过GPC、FTIR等确认了聚合物的结构。TGA及电化学分析结果表明,吲哚部分2位或3位引入吸电子基团可以提高聚合物的热稳定性,同时增大聚合物的能隙。紫外及荧光发射光谱结果表明,供、吸电子效应和链间相互作用以及π-π堆积相互作用等因素共同导致了聚合物具有不同的光谱现象,从而发出蓝绿色、黄色、橙红色、红棕色、浅红色和红色等不同颜色的荧光,在细胞成像方面可有效避免细胞自身的荧光干扰,表现出良好的应用潜力。
A series of novel functional monomers containing thiophene and 2,3-substituted indoles were designed and synthesized.Their structures were confirmed by GPC and FTIR.The results of TGA and electrochemical analysis showed that by introducing the electron-absorbing groups into the indole part,the thermal stability of the polymer could be improved and the energy gap of the polymer could be enlarged.The results of UV-vis and fluorescence emission spectroscopy showed that the donor-aceeptor effect,the chain-to-chain interaction and the π-π stacking interaction together lead to different spectroscopic phenomena of polymers,emitting fluorescence with different colors such as red,orange-red, light red,blue-green,yellow and brown,which can effectively avoid the fluorescence interference of cells,and showed good application potential.
作者
董犇
陆云
DONG Ben;LU Yun(Department of Polymer Science and Engineering,State Key Laboratory of Coordination Chemistry,Key Laboratory of High Performance Polymer Materials and Technology,Ministry of Education,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210093,China)
出处
《高分子通报》
CAS
CSCD
北大核心
2019年第1期48-55,共8页
Polymer Bulletin
基金
国家自然科学基金(21374046)
关键词
共轭聚合物
噻吩
吲哚
光谱现象
电化学性质
Conjugated polymers
Thiophene
Indole
Spectroscopic phenomena
Electrochemical properties
