Issue 57, 2018

A “Turn-On” fluorescent probe for sensitive and selective detection of fluoride ions based on aggregation-induced emission

Abstract

Based on the fluorophore of 2-(2′-hydroxyphenyl)benzothiazole (HBT) with aggregation-induced emission (AIE) properties, a highly selective and sensitive fluorescent probe PBT towards F was investigated. “Turn-On” fluorescence type signaling was realized by employing fluoride-selective cleavage of the latent thiophosphinated probe in mixed aqueous media. The probe is designed in such a way that the excited state intramolecular proton transfer (ESIPT) of the HBT moiety becomes blocked. The chemodosimetric approach of F to the probe results in the recovery of the ESIPT by removal of a free AIE-active HBT moiety through a subsequent hydrolysis process. The F detection limit of the probe was 3.8 nM in the dynamic range of 0.5 μM to 10 μM. In addition, the proposed probe has been used to detect F in water samples and toothpaste samples with satisfying results.

Graphical abstract: A “Turn-On” fluorescent probe for sensitive and selective detection of fluoride ions based on aggregation-induced emission

Supplementary files

Article information

Article type
Paper
Submitted
12 aug 2018
Accepted
08 sep 2018
First published
19 sep 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 32497-32505

A “Turn-On” fluorescent probe for sensitive and selective detection of fluoride ions based on aggregation-induced emission

M. Du, B. Huo, M. Li, A. Shen, X. Bai, Y. Lai, J. Liu and Y. Yang, RSC Adv., 2018, 8, 32497 DOI: 10.1039/C8RA06774K

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