title: Supramolecular polymeric vesicles formed by p-sulfonatocalix[4]arene and chitosan with multistimuli responses.
abstract: Supramolecular polymeric vesicles are constructed by the complexation of p-sulfonatocalix[4]arene and chitosan, where the multivalent electrostatic interactions between the anionic sulfonate tetramer and cationic polyammoniums served as the dominant driving force. The supra-amphiphilic assemblies are disassembled upon exposure to a pH stimulus since the partial deprotonation of chitosan accompanied by a pH increase. Adding a competitive guest can also disrupt the assembly, representing the host-guest inclusion response. Interestingly, an abnormal temperature-response is observed, possibly as a result of the temperature-directed fusion process.
authors.affiliation: Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, P. R. China. yuliu@nankai.edu.cn.
authors.forename: Shu
authors.initials: S
authors.lastname: Peng
authors.forename: Kui
authors.initials: K
authors.lastname: Wang
authors.forename: Dong-Sheng
authors.initials: DS
authors.lastname: Guo
authors.forename: Yu
authors.initials: Y
authors.lastname: Liu
mesh_terms: D047250:Calixarenes / Q000737:chemistry; D048271:Chitosan / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D055672:Static Electricity; D013696:Temperature
chemical_list: D011108:Polymers; D047250:Calixarenes; D048271:Chitosan