Abstract
A benzothiazole-based fluorescent and colorimetric chemosensor BZD ((E)-2-(benzo[d]thiazol-2-yl)-5-((4-(diethylamino)-2-hydroxybenzylidene)amino)phenol) was applied for detecting ClO−. BZD showed fluorescence quenching and color variation for ClO− via oxidative reaction between ClO− and the imine bond. It could effectively detect ClO− over various competitive analytes. Detection limit for ClO− was calculated to be 1.74 μM by fluorescent method and 16.44 μM by colorimetric one, respectively. Additionally, BZD could be utilized for sensing ClO− in zebrafish, real water sample and paper strip. The photophysical characteristics and sensing mechanism of BZD to ClO− were studied by fluorescent and UV–visible spectroscopy, NMR titration, and ESI-mass spectrometry.
Original language | English |
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Article number | 120827 |
Journal | Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy |
Volume | 270 |
DOIs | |
State | Published - 5 Apr 2022 |
Keywords
- Benzothiazole
- Chemosensor
- Hypochlorite
- Test-strip
- Water sample
- Zebrafish