Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, volume 305, pages 123481
Spectroscopic and theoretical studies on a novel bis(salamo)-like probe for highly effective fluorimetric-colorimetric identification of Fe3+ and Cu2+ in aquo-organic medium
Ya-Ting La
1
,
Ming-Xia Du
1
,
Lu Lu Gan
1
,
Yang Zhou
1
,
Ying Sun
1
,
Wen-Kui Dong
1
Publication type: Journal Article
Publication date: 2024-01-01
scimago Q2
wos Q1
SJR: 0.653
CiteScore: 8.4
Impact factor: 4.3
ISSN: 13861425, 18733557
Spectroscopy
Analytical Chemistry
Atomic and Molecular Physics, and Optics
Instrumentation
Abstract
A novel bis(salamo)-type sensor FT for fluorescence-colorimetric recognition of Fe3+/Cu2+ has been created, which revealed significant fluorescent performance and colorimetric sensing ability for Cu2+ and Fe3+ ions, superior to other related competitive metal ions. Interestingly, the binding of the FT probe with Cu2+ ions manifested an instant color change from colorless to red in sunlight, which is detectable by the naked-eye, and a fluorescence turn-off response under UV light for Fe3+ and Cu2+. The results demonstrated that the probe exhibits better sensitivity, greater affinity and lower limit of detection leading to quick response time in an aquo-organic medium. The excited state property of the FT probe and in the presence of Cu2+/Fe3+ was evaluated on the basis of DFT & TD-DFT results. Furthermore, test strips have been provided for convenient monitoring of Cu2+ and Fe3+ ions by naked eye and fluorescence method.
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