摘要
合成了一种新型单体2-N,N-二甲氨基-4,6-二氯嘧啶(ADNP)。以二氯-1,3-双(二苯基磷)丙烷基镍(Ⅱ)作催化剂,通过2,5-二溴噻吩格氏试剂与该单体共聚得到了一种新型共轭聚合物,聚[(2-N,N-二甲胺基嘧啶-4,6-二)-2,5-噻吩](PThPm)。采用FT-IR、1H-NMR等测试手段对新型单体与共聚物的结构进行了表征,并用UV-Vis、荧光光谱、X射线衍射、循环伏安、热重分析(TGA)等测试方法对单体和共聚物进行了性能分析。结果表明:共聚物在420nm处出现UV-Vis吸收峰,在528nm处出现荧光发射峰;共聚物的DMF溶液存在酸致变色现象,加入CF3COOH和CH3SO3H后,溶液由淡绿黄色转变为淡红色,UV-Vis吸收峰发生红移;PThPm共聚物有一定的结晶性和热稳定性;在-1.8^+1.8V之间出现电致变色现象,电极周围的溶液颜色从深蓝色变成深红色。
A new monomer （4,6-dichloro-N, N-dimethyl-2-amino-pyrimidine） was synthesized and its conjugated copolymer, Poly E 2-（ N, N-dimethylamio）-4, 6-pyrimidine-alt-2, 5-thiophene ] （PThPm） was obtained by Grignard reaction with 2,5-dibromothiophene. Both monomer and polymer were characterized by ^1H-NMR and FT-IR. Acidichromic properties of copolymer in N, N-dimethylformamide（DMF） were studied. The polymer shows the PL spectrum, giving a peak at 528 nm. The polymer has a certain thermal stability and crystallizable. The copolymer is quite sensitive to organic acids such as CF3COOH and CH3SO3H. Copolymer is electrochemically active in both oxidation and reduction regions from -1.8 V to ＋1.8 V with a color change of the DMF solution around electrode from deep blue to deep red.
出处
《功能高分子学报》
CAS
CSCD
北大核心
2008年第2期164-170,共7页
Journal of Functional Polymers
基金
国家自然科学基金资助项目(20674066)
