A Fluorescent Chemodosimeter for Hg2+Based on a Spirolactam Ring-Opening Strategy and its Application Towards Mercury Determination in Aqueous and Cellular Media |
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Authors: | Kempahanumakkagaari Suresh Kumar Thippeswamy Ramakrishnappa R. Geetha Balakrishna Mallingappagari Pandurangappa |
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Affiliation: | 1. Center for Nano and Material Sciences, Global Campus, Jain University, Jakkasandra (P), Kankapura (T), Bangalore, 560001, Karnataka, India 2. Department of Studies in Chemistry, Central College Campus, Dr. Ambedkar Veedi, Bangalore University, Bangalore, 560 001, India
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Abstract: | A novel fluorescent chemosensor rhodamine B phenyl hydrazide (RBPH) for Hg2+ was designed and synthesized. This probe is highly sensitive, selective, and irreversible for Hg2+ and exhibits fluorescent response at 580 nm. RBPH also displayed detectable color change from colorless to pink upon treatment with Hg2+. This property has been utilized as naked eye detection for Hg2+ in various industrial samples. Fluorescence microscopic experiments demonstrated that this chemosensor is cell permeable and can be used for fluorescence imaging of Hg2+ in cellular media. This probe can detect Hg2+ with good linear relationships from 1 to 100 nM with r?=?0.99983 and the limit of detection were found to be 0.019 nM with?±?0.91 % RSD at 10 nM concentrations. |
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