含偶氮苯的两亲性嵌段共聚物的合成与表征  

The Synthesis and Characterization of the Azobenzene-Containing Amphiphilic Block Copolymers

作　　者：颜曾[1] 林里[1] 俞燕蕾[1] 

机构地区：[1]复旦大学材料科学系,上海200433

出　　处：《复旦学报（自然科学版）》2013年第1期44-48,54,共6页Journal of Fudan University：Natural Science

基　　金：国家自然科学基金资助项目(21134003);国家重点基础研究基金资助项目(2009CB930400);上海启明星计划资助项目(11QH1400400)

摘　　要：将含有偶氮苯的基团引入到两亲性嵌段共聚物中以使其具有光响应特性.现合成了含偶氮苯的单体MA6AB2、大分子引发剂PEO-Br,然后通过原子转移自由基(ATRP)的方法合成了两亲性嵌段共聚物PEO-b-PM6AB2,用核磁共振(NMR)、FTIR法对嵌段共聚物的结构进行了鉴定;用凝胶渗透色谱(GPC)对嵌段共聚物的分子量及其分布进行了测定;用紫外-可见光吸收光谱法考察了嵌段共聚物的光致顺反异构反应.结果表明,PEO-b-PM6AB2具有良好的光响应性.The azobenzene-containing chromophores were incorporated into the amphiphilic block copolymers to make the latter photoresponsive. The azobenzene-eontaining monomer MA6AB2 and macroinitiator PEO - Br were synthesized. Then the amphiphilic block copolymer PEO-b-PM6AB2 was synthesized through atom transfer radical polymerization（ATRP）. The structure information of PEO-b-PM6AB2 was characterized by NMR and FTIR while the molecular weight and its distribution were characterized by GPC. The photoisornerization of the block copolymer was investigated by UV-Vis spectra, of which the results indicated PEO-b-PM6AB2 had a good photoresponsive property.

关 键 词：偶氮苯 嵌段共聚物 原子转移自由基聚合 

分 类 号：O632.6[理学—高分子化学]