were synthesized with periodically arranged in-chain thioacetal bonds via cationic degenerative chain-transfer copolymerization of vinyl ethers with a 7-membered cyclic thioacetal. The copolymers can be degraded into low- and controlled-molecular-weight polymers via hydrolysis. One-pot synthesis of multiblock copolymers and their degradation into diblock copolymers is also achieved.
通过
乙烯基醚与 7 元环状
硫缩醛的阳离子退化链转移共聚,合成了具有周期性排列的链内
硫缩醛键的可降解聚(
乙烯基醚)。共聚物可以通过
水解降解为低分子量和受控分子量的聚合物。还实现了多嵌段共聚物的一锅法合成及其降解为二嵌段共聚物。