(Macromol. Rapid Commun)Controlling CO2-Responsive Behaviors of Polymersomes Self-Assembled by Coumarin-Containing Star Polymer via Regulating Its Crosslinking Pattern
writer：Qi Yang, Guo Li,* Hesheng Xia, Zhaotie Liu, Zhongwen Liu, and Jinqiang Jiang*
keywords：CO2-responsive, coumarin, crosslinking, star polymers, γ-cyclodextrin
source：期刊
specific source：Macromol. Rapid Commun. 2018, 1800009
Issue time：2018年
An oligo(ethylene glycol)-based star polymer of N2-(OEG-C)3 with fluorescent coumarin as hydrophobic end groups and dual tertiary amines as the star center is designed and synthesized. Owing to its amphiphilic nature of N2-(OEG-C)3, it will self-assemble into hollow vesicles with coumarin groups dispersed in the hydrophobic membrane and exhibits CO2-responsive behavior due to the protonation of amine centers with CO2. More importantly, coumarin moieties can either form non-crosslinking with γ-cyclodextrin via the 2/1 host–guest inclusion, or covalently photodimerized by 365 nm light, offering a tunable crosslinking pattern in the hydrophobic membrane and thus adjusting its CO2-stimulated reorganization and disassembly behaviors of these vesicles in aqueous solution.