Figure 4 . (A ) RAFT polymerization of CO2-responsive amphiphilic block copolymer PEG-b -P(DEAEMA-co -TPEMA), and their self-assembly behavior into AIE fluorescent polymersomes, with cryo EM image of PEG45-b -P(DEAEMA36-co -TPEMA6) polymersomes formed in dioxane/water system, with photograph taken of the final polymersomes in water irradiated by UV light (I = 365 nm). Molecular organization in vesicular membrane shown in the reversible polymersome–micelle transition upon CO2/Ar treatment. Reproduced with permission: Copyright 2019, Angewandte Chemie.[85] (B ) RAFT polymerization of R-PEG-20 and R-PEG-40 completed with schematic illustration showing the cell imaging applications of R-PEG FPNs. Reproduced with permission: Copyright 2013, Royal Society of Chemistry.[86](C ) Stepwise preparation of a fluorescent polymer (PPEGMA-co -PUCL-Phe1) and efficient one-pot preparation of the same fluorescent polymer (PPEGMA-co -PUCL-Phe2). Reproduced with permission: Copyright 2016, Royal Society of Chemistry.[121]