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CO 2 ‐Activated Reversible Transition between Polymersomes and Micelles with AIE Fluorescence
Author(s) -
Zhang Dapeng,
Fan Yujiao,
Chen Hui,
Trépout Sylvain,
Li MinHui
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201905089
Subject(s) - polymersome , micelle , copolymer , nanoreactor , amphiphile , methacrylate , vesicle , fluorescence , materials science , polymer chemistry , peg ratio , chemical engineering , nanoparticle , chemistry , nanotechnology , organic chemistry , polymer , membrane , aqueous solution , biochemistry , physics , quantum mechanics , engineering , finance , economics
Fluorescent polymersomes with both aggregation‐induced emission (AIE) and CO 2 ‐responsive properties were developed from amphiphilic block copolymer PEG‐ b ‐P(DEAEMA‐ co ‐TPEMA) in which the hydrophobic block was a copolymer made of tetraphenylethene functionalized methacrylate (TPEMA) and 2‐(diethylamino)ethyl methacrylate (DEAEMA) with unspecified sequence arrangement. Four block copolymers with different DEAEMA/TPEMA and hydrophilic/hydrophobic ratios were synthesized, and bright AIE polymersomes were prepared by nanoprecipitation in THF/water and dioxane/water systems. Polymersomes of PEG 45 ‐ b ‐P(DEAEMA 36 ‐ co ‐TPEMA 6 ) were chosen to study the CO 2 ‐responsive property. Upon CO 2 bubbling vesicles transformed to small spherical micelles, and upon Ar bubbling micelles returned to vesicles with the presence of a few intermediate morphologies. These polymersomes might have promising applications as sensors, nanoreactors, or controlled release systems.