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Amphiphilic diblock copolymers consisting poly(ethylene oxide) and spiropyran-based monomers containing the carbamate linkage self-assemble into polymersomes with hydrophobic bilayers. Spiropyran moieties within polymersome bilayers undergo reversible isomerization between hydrophobic spiropyran (SP, λ2 > 450 nm irradiation) and zwitterionic merocyanine (MC, λ1 < 420 nm irradiation). Reproduced with permission.[148] Copyright 2015, American Chemical Society.
