BID与噻吩共轭聚合物的合成及光电性质研究  

Synthesis and Optoelectronic Properties of (E)-[4,4'-Biimidazolylidene]-5,5'(1H,1'H)-dione and Thiophene Copolymers

作　　者：王建国 郑绿茵 李勋[1] 范小林[1,2] 姜国玉 

机构地区：[1]赣南师范学院化学化工学院,江西赣州341000 [2]萍乡学院材料与化学工程系,江西萍乡337055

出　　处：《赣南师范学院学报》2015年第3期48-52,共5页Journal of Gannan Teachers' College(Social Science(2))

基　　金：国家自然科学基金青年基金项目(21301182);北京分子科学国家实验室2014年开放课题(20140117);江西省自然科学基金(20151BAB213012)

摘　　要：合成了以(E)-[4,4’-biimidazolylidene]-5,5’(1H,1’H)-dione(BID)为受体单元,并噻吩和联噻吩为给体单元的四种共轭聚合物(P1-P4),通过核磁、元素分析和凝胶渗透色谱对四种聚合物的结构和平均分子量进行了验证.研究了他们的光谱性质、电化学性质及场效应迁移率.结果表明,改变共轭聚合物上烷基侧链的长度对其光谱性质和电化学性质的影响不大,但是烷基侧链的长短可以影响共轭聚合物的溶解性,从而影响四种聚合物的场效应迁移率.Four copolymers P1, P2, P3 and P4 with benzo[ 1,2 - b ： 4,5 - b＇ ] dithiophene, 4,8-di （ thiophen-2-yl ） benzo [ 1,2 - b ：4,5 -b＇ ] dithiophene, thieno[ 3,2 -b ] thiophene and 2,2＇ -bithiophene as the respective electron donating moieties are synthesized and characterized by 1H NMR, elemental analysis, and gel permeation chromatography. Their spectroscopic and electronic properties were studied and Field-effect transistors with thin - films of P1/P3 were successfully fabricated with conventional techniques. Results show that chaning the lenghth of the branching alky chain does not vary their spectroscopic and electronic properties, but significantly influence their solubility in common organic solvents.

关 键 词：场效应迁移率 烷基侧链 共轭聚合物 噻吩 溶解性 

分 类 号：O631.3[理学—高分子化学]