Two novel fluorescent probes based on phenothiazine: synthesis and 'naked-eye' colorimetric recognition of Hg2+

Autor:	Lizhen Wang, Shimin Fang, Jianhua Zhou, Hongdong Duan, Chuane Wang, Dawei Qin, Shuangshuang Jin, Geng Yang
Rok vydání:	2019
Předmět:	010405 organic chemistry Thioacetal High resolution General Chemistry 010402 general chemistry 01 natural sciences Fluorescence 0104 chemical sciences NMR spectra database chemistry.chemical_compound chemistry Phenothiazine Mass spectrum Naked eye Nuclear chemistry
Zdroj:	Research on Chemical Intermediates. 45:2045-2063
ISSN:	1568-5675 0922-6168
DOI:	10.1007/s11164-018-03715-x
Popis:	Two novel colorimetric and fluorescent probes 2-(1,3-dithiolanes)-10-ethyl phenothiazine (PHE–Ed) and 2-(1,3-dithianes)-10-ethyl phenothiazine (PHE–Pd) based on phenothiazine were successfully synthesized, and their structure was confirmed by NMR and high resolution mass spectra. Fluorescence investigations revealed that the synthesized probes could be used for the selective detection of Hg2+, which was accompanied with an obvious color change from colorless to light yellow. The applicable ability of the two probes was investigated by a series of competitive experiments, solid colorimetric experiments, and applied experiments, which proved that these probes showed high sensitivity and great potential to detect Hg2+ in environmental analysis systems. Furthermore, the detection mechanism of the probes was investigated by FT-IR spectra and NMR spectra, and the results indicated that the detection of Hg2+ was accomplished through the Hg2+-promoted deprotection of thioacetal.
Databáze:	OpenAIRE
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