期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 424, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2021.127701
关键词
Acidic aqueous solution; Mercury ion; Fluorescence enhancement; DFT studies
资金
- National Natural Science Foundation of China [21701074, 21778026, 21402077, 21976209]
- program of Youth Innovation Promotion Association, CAS [2019217]
- Taishan Scholar Project Special Funding [TS20190962]
The development of new fluorescent probes for mercury ion analysis is rapidly growing due to the detrimental toxicity of mercury to environmental safety, ecological security, and human health. The synthesized Naph-NSS small molecule probe shows high sensitivity and selectivity towards mercury ions at low pH, and can be loaded on paper strips for instant detection.
Development of new fluorescent probes for mercury ion analysis in environmental or living organism is un-dergoing quick growth due to its detrimental toxicity to environmental safety, ecological security, and human being. However, in most cases, the industrial waste water is acidic whereas it remains a great challenge to real-time monitor mercury ion directly at low pH using small molecule fluorescence probe. In this study, we have successfully designed and synthesized the Naph (1, 8-Naphthalimide derivative)-based small molecule probe termed as Naph-NSS capable of monitoring mercury ion in a broad range at low pH (from 2.0 to 7.0). The solid spectral studies demonstrated the high sensitivity and selectivity of the probe towards mercury ion among various species. After binding with Hg2+, the fluorescence of Naph-NSS greatly enhanced, and the mechanism of which was investigated by DFT studies. The probe was able to be loaded on paper strip for instant and fast detection of mercury ions. In addition, the probe is also suitable for detection of mercury ion in environmental samples, living cells and in vivo.
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