A series of polymer chemosensors containing naphthalimide signal moiety and imide recognitionmoiety for the selective detection of fluoride ions (F) were synthesized by reversibleaddition-fragmentation chain transfer (RAFT) polymerization. The polymer chemosensorsdisplay obvious absorption and fluorescencevariations upon the additionof F, which can be observed by bothnaked eyes and optical responses. Thepolymers showed higher fluorescenceenhancement than its monomer, andthe polymers with higher molecularweight have higher sensitivity thanthosewith lower molecularweight. Otherhalide anions are found to hardly induceany variation of either the absorption orfluorescence spectra.
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