{"title":"Selective and Sensitive Detection of 2,4,6 Trinitrophenol (TNP) by Imidazolium Salt in Aqueous Medium","authors":"Nidhi, Bharti Khungar","doi":"10.1002/slct.202405344","DOIUrl":null,"url":null,"abstract":"<p>The synthesis and spectral characteristics of a fluorescent probe <b>AQIm</b> for 2,4,6 trinitrophenol (TNP) detection are reported in this study. The probe exhibited good sensitivity, selectivity, and efficiency for TNP detection in aqueous medium. The sensing mechanism was confirmed through UV–visible absorption, fluorescence, and <sup>1</sup>H NMR spectroscopy studies. Job's plot, cyclic voltammetry, theoretical calculations, and lifetime measurements suggested that the ground state charge transfer complex formation and inner filter effect (IFE) mechanisms might be the reasons for the fluorescence quenching. <b>AQImM</b> exhibited remarkable sensitivity and selectivity towards TNP with a low detection limit of 4 × 10<sup>−7</sup> M and a high quenching constant (<i>K</i><sub>sv</sub>) of 1.51 × 10<sup>4</sup> M<sup>−1</sup>. The probe could efficiently detect TNP in natural water and soil samples.</p>","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 11","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ChemistrySelect","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/slct.202405344","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The synthesis and spectral characteristics of a fluorescent probe AQIm for 2,4,6 trinitrophenol (TNP) detection are reported in this study. The probe exhibited good sensitivity, selectivity, and efficiency for TNP detection in aqueous medium. The sensing mechanism was confirmed through UV–visible absorption, fluorescence, and 1H NMR spectroscopy studies. Job's plot, cyclic voltammetry, theoretical calculations, and lifetime measurements suggested that the ground state charge transfer complex formation and inner filter effect (IFE) mechanisms might be the reasons for the fluorescence quenching. AQImM exhibited remarkable sensitivity and selectivity towards TNP with a low detection limit of 4 × 10−7 M and a high quenching constant (Ksv) of 1.51 × 104 M−1. The probe could efficiently detect TNP in natural water and soil samples.
期刊介绍：
ChemistrySelect is the latest journal from ChemPubSoc Europe and Wiley-VCH. It offers researchers a quality society-owned journal in which to publish their work in all areas of chemistry. Manuscripts are evaluated by active researchers to ensure they add meaningfully to the scientific literature, and those accepted are processed quickly to ensure rapid online publication.
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