期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 248, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2020.119269
关键词
2-Hydroxynaphthalene; Acylhydrazone; Chemosensor; Aluminium ion; Applications
类别
资金
- National Natural Science Foundation of China [21703078, 21576112, 21807038]
- Natural Science Foundation Project of Jilin Province [20180520151JH, 20180623042TC, 20180101181JC]
- Project of Jilin Province Development and Reform Commission [2019C044, 2019C0513]
- Science and Technology Research Project of the Department of Education of Jilin Province [JJKH20191008KJ]
The synthesized fluorescent chemosensor showed high selectivity and sensitivity for Al3+, with a detection limit of 4.22 x 10(-8) M and a stability constant of 4.82 x 10(4) M-1. The 1:1 binding stoichiometry of the compound to Al3+ was confirmed from the Job's plot based on fluorescence titrations.
Developing high performance fluorescent chemosensor for Al3+ detection is highly desirable, due to the excess of Al3+ will lead to many diseases. In this paper, a simple 2-hydroxynaphthalene-based fluorescent chemosensor has been synthesized and characterized by different spectroscopic methods. The compound exhibited an ``turn-on-type fluorescent chemosensing for the detection of Al3+, which was ascribed to the chelation-enhanced fluorescence (CHEF). The high selectivity and sensitivity of the compound for Al3+ were verified by fluorescence spectra in its DMF solution, and the enhancement of fluorescent intensity could be observed by naked-eye from non-fluorescence to green light. The detection limit of the compound for Al3+ was found to be 4.22 x 10(-8) M and the stability constant was 4.82 x 10(4) M-1. The 1:1 binding stoichiometry of the compound to Al3+ was confirmed from the Job's plot based on fluorescence titrations. Additionally, the sensing process of the compound to Al3+ was chemically reversible by adding Na(2)EDTA. Importantly, the probe was successfully applied to quantitative analysis of Al3+ in real drug and potable water samples. (C) 2020 Elsevier B.V. All rights reserved.
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