A Novel “Off–On” NIR Fluorescent Probe for Detecting Hg2+ Based on Dicyanoisophorone and Its Application in Bio-imaging and Real Water Samples

被引：0
作者：
Yibin Zhang
Qing Yan
Yueting Cheng
Boling Wang
Xiaoqian Rong
Yanhong Kuang
Xianyu Qiu
Lin Sun
Yanyan Zhou
机构：
[1] Yangtze Normal University,College of Chemistry and Chemical Engineering
[2] Jiangxi Center of Medical Device Testing,undefined
来源：
Food Analytical Methods | 2022年 / 15卷
关键词：
NIR fluorescent probe; Hg; Bio-imaging; Water tests;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study, dicyanoisophorone was used as NIR (near-infrared spectroscopy) emission fluorophore, and thiobenzoate as the recognition function motif to fabricate probe HgS. Through the Hg-S linker, the whole molecule’s fluorescence was quenched due to the strong photoinduced electron transfer effect (PET). However, the Hg-S linker could be cut off upon the Hg2+ being added to the probe solution, leading to a strong fluorescence emission turned on by the intramolecular charge transfer effect (ICT). The probe HgS can respond to Hg2+ during the NIR emission spectral range and exhibits a significant Stokes shift (215 nm), excellent selectivity, and biocompatibility. Besides, the probe HgS can be used to monitor Hg2+ in bio-system and water samples.
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页码：3490 / 3497
页数：7
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