摘要
合成了一种新单体5,8-二（5′-溴-3,4-乙撑二氧噻基）-萘基喹喔啉,并通过Sonogashira偶合反应将此单体与带有不同长链烷氧基的对苯乙炔进行交替共聚,得到了聚[（2,5-二庚氧基-1,4-苯撑）乙炔撑-5,8-二（3,4-乙撑二氧噻基）-萘基喹喔啉]（PI）和聚[（2,5-二十二烷氧基-1,4-苯撑）乙炔撑-5,8-二（3,4-乙撑二氧噻基）-萘基喹喔啉]（PII）。采用核磁共振氢谱、傅里叶红外光谱、紫外-可见光谱、荧光光谱、循环伏安和热重分析对聚合物进行了表征。结果表明：共聚物PI和PII有相似的光学特性,均在490 nm处出现紫外-可见最大吸收峰,在613 nm处出现荧光最大发射峰;热稳定性和电化学活性较好;在-1.0~2.0 V出现电致变色现象,颜色由红色变为深蓝色。
A new monomer 5,8-bis（5′-bromo-3,4-ethylenedioxythiophenyl）-acenaphthenequinoxaline was synthesized and its conjugated copolymer,poly（2,5-didodecyloxy1,4-diethynylphenylene-alt-5,8-bis（3,4-ethylenedioxythiophenyl）-acenaphthenequinox）（PI） and poly（2,5-diheptyloxy-1,4-diethynyl-phenylene-alt-5,8-bis（3,4-ethylenedioxythiophenyl）-acenaphthenequinox） （PII） were obtained by Sonogashira reaction with 1,4-diethynyl-2,5-dialkoxybenze.Both monomer and polymers were characterized by（）~1HNMR and FT-IR spectroscopy.Results show that these two polymers have similar optical properties with UV-Vis absorption peak at 490 nm,and PL emission peak at 613 nm.Copolymers have good thermal stability and were electrochemically active.They give reversible two redox peaks in the potential region of （-1.0—2.0 V） with a color change of the polymer film from red to deep blue.
出处
《功能高分子学报》
CAS
CSCD
北大核心
2010年第2期138-143,共6页
Journal of Functional Polymers
基金
国家自然科学基金资助项目(20674066,20974092)
