{"title":"Rhodamine B Functionalised Schiff Base Chemosensor for Effective Detection of Cu(II) Ions in Water Sample.","authors":"Sushree Suman Dash, Pravin Kumar Kar, Renjith Bhaskaran","doi":"10.1007/s10895-025-04536-z","DOIUrl":null,"url":null,"abstract":"<p><p>Schiff Base sensor (E)-3-(((3',6'-bis(diethylamino)spiro[isoindoline-1,9'-xanthen]-2-yl)imino)methyl)naphthalen-2-ol (SBRB2) was conceived and produced by employing a new Rhodamine functionalization. The ability of the sensor SBRB2 to detect Cu(II) was studied using fluorescence and UV-Vis spectroscopy. The sensor SBRB2 indicated sensitivity and specific selectivity to Cu(II) among other competitive metal ions based on fluorescence studies. A new emission peak appeared at 580 nm only in the presence of Cu(II). The chelation of the ligand with Cu (II) was responsible for the sensitivity to Cu (II). The binding constant and detection limit of the SBRB2: Cu (II) complex were found by the fluorescence titration to be 1.18 × 10<sup>4</sup> M<sup>-1</sup> and 3.03 × 10<sup>-6</sup> M, respectively. It showed the 1:1 complexation between SBRB2 and Cu (II) was conformed from the DFT and TD-DFT study of SBRB2 in both solvent and gas phase.</p>","PeriodicalId":15800,"journal":{"name":"Journal of Fluorescence","volume":" ","pages":""},"PeriodicalIF":3.1000,"publicationDate":"2025-09-13","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/s10895-025-04536-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}
引用次数: 0
Abstract
Schiff Base sensor (E)-3-(((3',6'-bis(diethylamino)spiro[isoindoline-1,9'-xanthen]-2-yl)imino)methyl)naphthalen-2-ol (SBRB2) was conceived and produced by employing a new Rhodamine functionalization. The ability of the sensor SBRB2 to detect Cu(II) was studied using fluorescence and UV-Vis spectroscopy. The sensor SBRB2 indicated sensitivity and specific selectivity to Cu(II) among other competitive metal ions based on fluorescence studies. A new emission peak appeared at 580 nm only in the presence of Cu(II). The chelation of the ligand with Cu (II) was responsible for the sensitivity to Cu (II). The binding constant and detection limit of the SBRB2: Cu (II) complex were found by the fluorescence titration to be 1.18 × 104 M-1 and 3.03 × 10-6 M, respectively. It showed the 1:1 complexation between SBRB2 and Cu (II) was conformed from the DFT and TD-DFT study of SBRB2 in both solvent and gas phase.
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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