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Dual Gas-responsive Fluorescent Diblock Copolymer Synthesized via RAFT Polymerization. 2022

Xiaozhen Zhang, and Jinjin Wang, and Shijia Zhou, and Shuangshuang Sun, and Xiaorong Wang, and Shengwei Guo, and Fengyang Zhao
School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, Liaoning, 113001, China.

Stimulus-responsive polymers with luminescence properties have a wide range of applications in the fields of controlled drug release, fluorescent probes, and biological stents. In this paper, carbon dioxide (CO2)/oxygen (O2) dual-responsive fluorescent diblock copolymers were synthesized by the reversible addition-fragmentation chain transfer (RAFT) polymerization method with two fluorescent monomers synthesized as its luminescence source, DEAEMA (CO2 responsive monomer) and tFMA (O2 responsive monomer). An experimental study demonstrated that the synthesized stimulus-responsive fluorescent polymer had a high sensitivity to CO2; the double-responsive fluorescent diblock copolymer could form and achieve the reversal of polymer micelles in the aqueous solution when it was sequentially subjected to the introduction of CO2 and O2.

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