Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 260, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2021.119947
Keywords
Fluorescent probe; 4-Methylbenzenethiol; 4-(Benzo[d]thiazol-2-yl)-3-methoxyphenol; Real water samples
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Funding
- Natural Science Foundation of Shandong Province [ZR2018MB042]
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The new fluorescent probe MBT showed good selectivity and anti-interference towards p-MePhSH, with high sensitivity and detection limit in real water samples. The sensing mechanism was verified by high-resolution mass spectrometry and fluorescence lifetime analysis.
A new fluorescent probe (MBT) for the detection of 4-methylbenzenethiol (p-MePhSH) was developed by using 4-(benzo[d]thiazol-2-yl)-3-methoxyphenol as the fluorophore and 2,4-dinitrophenyl ether as the sensing moiety. Probe MBT displayed good selectivity toward p-MePhSH in DMSO/PBS buffer (5/5, v/v) solution and anti-interference over other competitive species via nucleophilic aromatic substitution. The fluorescence intensities of the probe responded p-MePhSH showed a 22-fold enhancement and good linearity with p-MePhSH concentration collected in the range of 0-15 mu M. Moreover, the probe is sensitive to p-MePhSH and the limit of detection is 45 nM. The sensing mechanism of probe MBT was verified by high-resolution mass spectrometry and fluorescence lifetime. Furthermore, the probe was used to the detection of p-MePhSH in real water samples. (C) 2021 Elsevier B.V. All rights reserved.
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