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The structure of compound <jats:bold>1<\/jats:bold> was characterized by <jats:sup>1<\/jats:sup>H NMR and <jats:sup>13<\/jats:sup>C NMR. The fluorescence properties of this chemosensor toward various metal ions were explored by fluorescence and UV\u2013vis spectra. The results indicated that the chemosensor had high selectivity toward Zn<jats:sup>2+<\/jats:sup> over other coexisting metal ions. The binding stoichiometry of <jats:bold>1<\/jats:bold> toward Zn<jats:sup>2+<\/jats:sup> was determined to be 1:1 by Job's plot. Furthermore, the chemosensor was reversible for Zn<jats:sup>2+<\/jats:sup> in an ethanol\/H<jats:sub>2<\/jats:sub>O (7:3, V\/V) solution by the addition of Na<jats:sub>2<\/jats:sub> EDTA. The above experimental results demonstrate that <jats:bold>1<\/jats:bold> can be used as a fluorescent chemosensor for the real\u2010time detection of Zn<jats:sup>2+<\/jats:sup> in biological species and environmental systems.<\/jats:p>","DOI":"10.1002\/bio.70122","type":"journal-article","created":{"date-parts":[[2025,2,26]],"date-time":"2025-02-26T00:56:49Z","timestamp":1740531409000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["A New Coumarin\u2010Based Fluorescent Chemosensor for Selection Detection of Zinc Ions in Aqueous Ethanol"],"prefix":"10.1002","volume":"40","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-8655-8727","authenticated-orcid":false,"given":"Wensheng","family":"Yang","sequence":"first","affiliation":[{"name":"School of Chemistry and Chemical Engineering Yulin University  Yulin 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