A turn-on red-emitting fluorescent probe for determination of copper(II) ions in food samples and living zebrafish.

Abstract:

:Herein, we developed a turn-on red-emitting fluorescent probe for the sensitive and selective detection of copper ions (Cu2+) in food samples and living zebrafish. The probe employs a hemicyanine scaffold as the fluorophore and a 2-pyridinecarbonyl group as the recognition receptor and quenching moiety. The 2-pyridinecarbonyl moiety can be specifically cleaved by Cu2+ and results in an approximately 18-fold fluorescence enhancement of the probe, thereby providing a fluorescence turn-on assay for Cu2+. Additionally, the probe exhibited excellent selectivity, high sensitivity, a broad linear relationship (0.020 to 8.0 μM), and a low limit of detection (4.0 nM, S/N = 3) for Cu2+. Concomitantly, the probe exhibited satisfactory analytical performance when used with actual food samples. Moreover, the probe could be used for in situ determination of Cu2+ in both living plant tissues and in living zebrafish.

journal_name

Food Chem

journal_title

Food chemistry

authors

Zhou Z,Tang H,Chen S,Huang Y,Zhu X,Li H,Zhang Y,Yao S

doi

10.1016/j.foodchem.2020.128513

subject

Has Abstract

pub_date

2021-05-01 00:00:00

pages

128513

eissn

0308-8146

issn

1873-7072

pii

S0308-8146(20)32375-X

journal_volume

343

pub_type

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