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A novel dual-function probe for recognition and differentiation of Zn2+ and Al3+ and its application

Authors :
Jiao Xu
Xue-Jiao Sun
Shuang Zeng
Cheng-guo Liu
Ting-Ting Liu
Zhi-Yong Xing
Jin-Long Li
Source :
Journal of Molecular Liquids. 300:112250
Publication Year :
2020
Publisher :
Elsevier BV, 2020.

Abstract

A dual-function probe BHMH was synthesized and characterized functioned with benzothiazole as signal unit for the simultaneous detection of Zn2+ and Al3+ DMF/H2O (1/1, v/v, 0.01 M HEPES, pH = 6.0). Probe BHMH achieved in the recognition of Zn2+ and Al3+ both through obvious fluorescence turn-on and absorbance ratiometric response. The limit of detection (LOD) according to the titration of fluorescence for Zn2+ and Al3+ were 1.27 × 10−7 M and 1.42 × 10−7 M, respectively. Furthermore, the significant color changes could be detected by naked eye whatever under ultraviolet-lamp or daylight. According to Job plot, the binding ratio of BHMH with Zn2+ and Al3+ were determined as 1:1 and 2:1, respectively. The binging detail was further confirmed by 1H NMR titration and ESI-MS analysis as well. Moreover, probe BHMH was successfully applied in the detection Zn2+ and Al3+ in real sample and test stripe.

Details

ISSN :
01677322
Volume :
300
Database :
OpenAIRE
Journal :
Journal of Molecular Liquids
Accession number :
edsair.doi...........30064afe707d0f504a8e61e58aa3a955