Medium-dependent selectivity for Cu 2+and glutathione by a near-infrared fluorescent probe

被引：3

作者：

Zhang, Kaiqiang ^{[1
]}

Zhao, Baijun ^{[1
]}

Song, Yanxi ^{[2
]}

Li, Hongqi ^{[1
]}

Du, Deming ^{[1
]}

Sun, Haoyuan ^{[1
]}

Liu, Weiping ^{[1
]}

机构：

[1] Donghua Univ, Coll Chem & Chem Engn, Shanghai 201620, Peoples R China

[2] Donghua Univ, Coll Environm Sci & Engn, Shanghai 201620, Peoples R China

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2024年 / 453卷

关键词：

Near; -infrared; Coumarin; Fluorescent probe; Copper(II); Glutathione; SCHIFF-BASE; COPPER-ION; CHEMOSENSOR; HOMOCYSTEINE; ALZHEIMERS; CYSTEINE;

D O I：

10.1016/j.jphotochem.2024.115683

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel near -infrared Schiff base fluorescent probe was synthesized. The probe displayed medium -dependent selectivity and could specifically recognize Cu 2 + in EtOH/H 2 O (9:1, v/v) while respond to glutathione (GSH) in THF/H 2 O (9:1, v/v). Addition of Cu 2 + to the probe solution caused obvious fluorescence quenching and color change. The detection limit was calculated to be 37 nM. The probe could specifically detect GSH through fluorescence turn -on in THF/H 2 O (9:1, v/v) medium based on GSH-induced hydrolysis of the probe, with the detection limit as low as 20 nM. The sensing mechanism of the probe was verified by spectral analysis and density functional theory (DFT) calculations. Application of the probe to real water samples analysis and bioimaging was achieved.

引用

页数：8

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