A new acetal as a fluorescent probe for highly selective detection of Fe3+ and its application in bioimaging

Wang Min,Qingyu Zhao,Zhen‐Hai Fu,Zhi-Hong Zhang

Published 2019 in Chemistry Physics

ABSTRACT

Abstract A simple fluorescent probe L for Fe3+ was easily synthesized based on anthracene. Among the various metal ions including Fe2+, this probe exhibited high sensitivity and good selectivity toward Fe3+ with turn-off fluorescence mode in DMSO-HEPES buffer solution (20 mM, pH = 7.0, 1:1 (v/v)). When adequate Fe3+ ion was added into the solution of probe L, its molecular structure transferred from anthraldehyde dimethyl acetal to anthraldehyde, resulting in fluorescence quenching with a low detection limit of 3.08 μM. 1H NMR spectra and TLC analysis further supported this concept. Finally, this probe was successfully applied in bioimaging.

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