A new colorimetric and fluorescent chemosensor based on thiacalix[4]arene for fluoride ions |
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| Institution: | 1. Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 4 Takeda, Kofu 400-8511, Japan;2. Center for Instrumental Analysis, Center for Creative Technology, University of Yamanashi, 4 Takeda, Kofu 400-8511, Japan;3. Graduate School Science and Engineering, Saitama University, 225, Shimo-Okubo, Sakura, Saitama 338-8570, Japan;1. Gujarat University, Navrangpura, Ahmedabad 380009, India;2. CCG@CUG Group, School of Chemical Sciences, Central University of Gujarat, Sector-30, Gandhinagar 382030, India;1. Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, Gujarat, India;2. CCG@CUG, School of Chemical Sciences, Central University of Gujarat, Sector-30, Gandhinagar 382030, India;3. Department of Zoology, School of Sciences, Gujarat University, Ahmedabad, 380009, Gujarat, India;4. CCG@CUG, Centre for Applied Chemistry, Central University of Gujarat, Sector-30, Gandhinagar 382030, India;1. School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China;2. Department of Chemistry, Faculty of Science, Ganpat University Mehsana-Gozaria Highway, Kherva, Mehsana, 384012, Gujarat, India;3. Department of Botany, Bioinformatics and Climate Change Impacts Management, University School of Sciences, Gujarat University, Ahmedabad, 380009, Gujarat, India |
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| Abstract: | A new thiacalix4]arene based fluorescent chemosensor thiacalix4]arene-N-(quinolin-8-yl)acetamide (TCAN8QA) has been synthesized. TCAN8QA has been found to exhibit highly selective behavior for F? ions among all other anions, that is, Cl?, Br?, I?, PO4?3, OH?, H2PO4?, and CH3COO? in the absorption spectra as well as in the emission spectra. Red shift and quenching in emission spectra constituting the signature for fluoride detection are due to photoinduced charge transfer (PCT) which can be attributed to deprotonation of acidic NH proton in the presence of fluoride ions. |
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| Keywords: | Thiacalix[4]arene Chemosensor Fluoride sensor Quenching |
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