Li Huiying, Zheng Honghao, Tong Weijun, Gao Changyou
MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University in Hangzhou, 310027, China.
MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University in Hangzhou, 310027, China.
J Colloid Interface Sci. 2017 Jun 15;496:228-234. doi: 10.1016/j.jcis.2017.02.029. Epub 2017 Feb 14.
Ionic strength-responsive microcapsules with auto-fluorescence were fabricated by incubation of poly(allylamine hydrochloride) (PAH)-doped CaCO particles in triethylamine (EtN), followed by core removal using HCl. Based on the combination of hydrophobic interaction and hydrogen bonding, PAH and EtN formed a complex with a molar ratio of 3:1 (repeating unit of PAH: EtN). The as-prepared capsules showed extraordinary stability against 1M HCl, 1M NaOH and 6M urea solutions, and could swell or shrink reversibly in response to the ionic strength. Furthermore, the capsules possessed auto-fluorescence, allowing easily tracking of capsules during applications. Such interaction may be expanded to formation of stimuli-responsive multilayer films and other colloidal particles.
通过将掺杂有聚烯丙胺盐酸盐（PAH）的碳酸钙颗粒在三乙胺（EtN）中孵育，随后用盐酸去除核心，制备了具有自发荧光的离子强度响应微胶囊。基于疏水相互作用和氢键的结合，PAH和EtN形成了摩尔比为3:1（PAH的重复单元：EtN）的复合物。所制备的微胶囊对1M盐酸、1M氢氧化钠和6M尿素溶液表现出非凡的稳定性，并且可以响应离子强度而可逆地膨胀或收缩。此外，微胶囊具有自发荧光，便于在应用过程中轻松追踪微胶囊。这种相互作用可能会扩展到刺激响应多层膜和其他胶体颗粒的形成。
