Abstract
A new phenothiazine-thiophene hydrazone based ((10-ethyl-10H-phenothiazine-3,7-diyl)bis(methanylylidene))bis(thiophene-2-carbohydrazide) (PHT) chemosensor was synthesized via a single-step reaction and utilized as fluorescence “On-Off” sensor towards Hg2+ ion. The PHT was fully characterized by FT-IR, 1H-NMR, and ESI-Mass spectral analysis. The PHT probe was efficiently used for the selective detection of Hg2+ ion in the presence of other metal ions. Further, the stoichiometry of the PHT with Hg2+ complex was confirmed by Job’s plot analysis. The limit of detection (LOD) value of the probe PHT was found to be 0.44 × 10−8 M.
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Acknowledgments
The authors are grateful for the financial support from the University Grants Commission, (UGC-BSR, NO: F. 30-319/2016) Government of India, New Delhi, India. The first author acknowledges Periyar University, Salem, Tamilnadu for providing University Research Fellowship (URF).
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This Study Was Supported by the University Grants Commission - Basic Scientific Research (UGC-BSR) Fund, Government of India
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Govindasamy, V., Perumal, S., Sekar, I. et al. Phenothiazine-Thiophene Hydrazide Dyad: An Efficient “On-Off” Chemosensor for Highly Selective and Sensitive Detection of Hg2+ Ions. J Fluoresc 31, 667–674 (2021). https://doi.org/10.1007/s10895-021-02690-8
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DOI: https://doi.org/10.1007/s10895-021-02690-8