Novel photoresponsive amphiphilic copolymers, polymethoxy[oligo(ethylene glycol)] methacrylate-co-styrene}, were synthesized using a spirobenzopyran initiator by atom transfer radical polymerization. The spiropyran and merocyanine forms of the spirobenzopyran moiety at the end group successfully underwent photoisomerization under the conditions of micelle formation, which resulted in a drastic change in micellar properties, e.g., in the assembly state and the hydrophobic environment.
利用螺
苯并呋喃引发剂,通过原子转移自由基聚合法合成了新型光致伸缩性两亲共聚物--聚甲氧基[低聚(
乙二醇)]
甲基丙烯酸酯-共
苯乙烯}。在胶束形成的条件下,螺
苯并呋喃末端基团的螺
吡喃和梅洛菁形式成功地发生了光异构化,从而使胶束的性质(如组装状态和疏
水环境)发生了巨大变化。