{"title":"基于喹诺啉的三通道荧光比色化学传感器用于银离子的选择性和敏感检测：生物和环境应用。","authors":"Srishti Dutta, Vanshika Sharma, Abhilash Pandey, Dishen Kumar, Devanand Sahu, Goutam Kumar Patra","doi":"10.1007/s10895-025-04528-z","DOIUrl":null,"url":null,"abstract":"<p><p>Herein we describe a quinoxaline mono Schiff base, synthesised from benzil and o-phenylene diamine that may be used as a fluorescent-colourimetric chemosensor to detect Ag<sup>+</sup> ions in organic media with high selectivity and sensitivity over other competitive ions. The sensing processes were operated by visual change, absorption, and emission measurements, and the binding sites were confirmed by FTIR and single-crystal structure of the Ag(I)- complex. From Job-plot analysis, ESI-mass spectra and XRD studies 1:2 binding stoichiometry between host-guest was observed. The detection limit values for Ag<sup>+</sup> obtained 7.9 × 10<sup>-6</sup> M colorimetrically and 1.25 × 10<sup>-6</sup> M fluorometrically. Moreover the receptor L could operate in a wide range of pH 6-11 including physiological pH, and can be successfully applied to environmental samples, BSA proteins and living cells for detecting Ag<sup>+</sup> ion. Based on these findings, we think that the receptor L will be an impressive addition to the field of straightforward 2,3-Diphenylquinoxaline based Schiff base chemosensors for analytes.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":3.1000,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Quinoxaline Based Three Channel Fluorescent-colorimetric Chemosensor for Selective and Sensitive Detection of Ag<sup>+</sup> Ions: Biological and Environmental Applications.\",\"authors\":\"Srishti Dutta, Vanshika Sharma, Abhilash Pandey, Dishen Kumar, Devanand Sahu, Goutam Kumar Patra\",\"doi\":\"10.1007/s10895-025-04528-z\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Herein we describe a quinoxaline mono Schiff base, synthesised from benzil and o-phenylene diamine that may be used as a fluorescent-colourimetric chemosensor to detect Ag<sup>+</sup> ions in organic media with high selectivity and sensitivity over other competitive ions. The sensing processes were operated by visual change, absorption, and emission measurements, and the binding sites were confirmed by FTIR and single-crystal structure of the Ag(I)- complex. From Job-plot analysis, ESI-mass spectra and XRD studies 1:2 binding stoichiometry between host-guest was observed. The detection limit values for Ag<sup>+</sup> obtained 7.9 × 10<sup>-6</sup> M colorimetrically and 1.25 × 10<sup>-6</sup> M fluorometrically. Moreover the receptor L could operate in a wide range of pH 6-11 including physiological pH, and can be successfully applied to environmental samples, BSA proteins and living cells for detecting Ag<sup>+</sup> ion. Based on these findings, we think that the receptor L will be an impressive addition to the field of straightforward 2,3-Diphenylquinoxaline based Schiff base chemosensors for analytes.</p>\",\"PeriodicalId\":15800,\"journal\":{\"name\":\"Journal of Fluorescence\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":3.1000,\"publicationDate\":\"2025-08-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Fluorescence\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1007/s10895-025-04528-z\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"BIOCHEMICAL RESEARCH METHODS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Fluorescence","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1007/s10895-025-04528-z","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"BIOCHEMICAL RESEARCH METHODS","Score":null,"Total":0}
Quinoxaline Based Three Channel Fluorescent-colorimetric Chemosensor for Selective and Sensitive Detection of Ag+ Ions: Biological and Environmental Applications.
Herein we describe a quinoxaline mono Schiff base, synthesised from benzil and o-phenylene diamine that may be used as a fluorescent-colourimetric chemosensor to detect Ag+ ions in organic media with high selectivity and sensitivity over other competitive ions. The sensing processes were operated by visual change, absorption, and emission measurements, and the binding sites were confirmed by FTIR and single-crystal structure of the Ag(I)- complex. From Job-plot analysis, ESI-mass spectra and XRD studies 1:2 binding stoichiometry between host-guest was observed. The detection limit values for Ag+ obtained 7.9 × 10-6 M colorimetrically and 1.25 × 10-6 M fluorometrically. Moreover the receptor L could operate in a wide range of pH 6-11 including physiological pH, and can be successfully applied to environmental samples, BSA proteins and living cells for detecting Ag+ ion. Based on these findings, we think that the receptor L will be an impressive addition to the field of straightforward 2,3-Diphenylquinoxaline based Schiff base chemosensors for analytes.
期刊介绍：
Journal of Fluorescence is an international forum for the publication of peer-reviewed original articles that advance the practice of this established spectroscopic technique. Topics covered include advances in theory/and or data analysis, studies of the photophysics of aromatic molecules, solvent, and environmental effects, development of stationary or time-resolved measurements, advances in fluorescence microscopy, imaging, photobleaching/recovery measurements, and/or phosphorescence for studies of cell biology, chemical biology and the advanced uses of fluorescence in flow cytometry/analysis, immunology, high throughput screening/drug discovery, DNA sequencing/arrays, genomics and proteomics. Typical applications might include studies of macromolecular dynamics and conformation, intracellular chemistry, and gene expression. The journal also publishes papers that describe the synthesis and characterization of new fluorophores, particularly those displaying unique sensitivities and/or optical properties. In addition to original articles, the Journal also publishes reviews, rapid communications, short communications, letters to the editor, topical news articles, and technical and design notes.
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