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A “turn-on” ESIPT fluorescence probe of 2-(aminocarbonyl)phenylboronic acid for the selective detection of Cu(ii)† † Electronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d2ra04348c

ABSTRACT: Herein, we report a highly selective fluorescent probe for the detection of Cu(ii). The detection mechanism relies on the Cu(ii)-catalyzed oxidative hydroxylation of 2-(aminocarbonyl)phenylboronic acid into salicylamide, thus recovering the excited-state intramolecular proton transfer (ESIPT) effect and inducing more than 35-fold fluorescence enhancement. The simple structure and readily available fluorescent probe give a novel method for quantitatively detecting Cu(ii) in the linear range of 0–22 μM, with a limit of detection down to 68 nM, and exhibiting high selectivity for Cu(ii) over 16 other metal ions. Herein, we report a highly selective fluorescent probe for the detection of Cu(ii).

SUBMITTER: Jiang D

PROVIDER: S-EPMC9620781 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature

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