A reversible fluorescent sensor for continuous detection of fluoride ion and trace water in chemical reagents.
Spectrochim Acta A Mol Biomol Spectrosc
; 312: 124059, 2024 May 05.
Article
in En
| MEDLINE
| ID: mdl-38422932
ABSTRACT
Continuously monitorable fluorescence sensors can provide fast, immediate, in-field detection of analytes without tedious process. A simple fluorescent sensor (BN) constructed from naphthol Schiff base was developed for reversible monitoring of F- and trace water. Sensor BN showed specific selectivity toward F- over other anions giving rise to a fluorescence "turn-on" response. After added F-, the BN solution caused a dramatically observable color change from non-fluorescence to blue-green, and the limit of detection reached 78.5 nM. The Job's and 1H NMR analysis confirmed that the recognition mechanism could be concluded to F- caused deprotonation of sensor BN by hydrogen bonding interaction. Moreover, the deprotonated form BNâF obtained by using F- was acted as excellent sensitivity sensor for trace water detection with instant response through reprotonation. After addition of trace water, the emission color and spectral signal of BNâF reverted to the original BN sate with the limit of detection of 0.0011 %. The reversible detection characteristic was conducive to the development of an inkless writing and encryption device. And importantly, BNâF was utilized as a promising fluorescent sensor in the quantitative determination of water content in routinely chemical reagents.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Spectrochim Acta A Mol Biomol Spectrosc
Journal subject:
BIOLOGIA MOLECULAR
Year:
2024
Document type:
Article
Affiliation country:
Country of publication: