Abstract
A fluorescent sensor based on 1,2,1ʹ,2ʹ- Tetra(methoxycarbonyl)- 3,3ʹ- bis(p-methylbenzoyl)- 7,7ʹ-bisindolizine (MBI) showing excellent selectivity towards Fe3+ ions was developed. Under optimized experimental conditions, the fluorescence intensity of 1,2,1ʹ,2ʹ- Tetramethoxycarbonyl- 3,3ʹ- bis(p-methylbenzoyl)- 7,7ʹ-bisindolizine was quenched linearly by Fe3+ ions in the range of 2.00 × 10−2 to 4.76 × 10−3 M. The limit of detection was found to be 3.17 × 10−3 M. The mechanism for quenching was investigated. The developed sensor was applied for the determination of Fe3+ in pharmaceutical samples.
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Acknowledgments
One of the authors (Sheela Gopal M) is thankful to the University Grants Commission (UGC), India, for granting FIP and Department of Applied Chemistry CUSAT, Cochin for their technical support. The author Divya Thomas express the gratitude to Council of Scientific and Industrial Research (CSIR) for the award of research fellowship.
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I, A., M, S.G. & Thomas, D. A New Fluorescent Sensor Based on Bisindolizine Derivative. J Fluoresc 26, 725–729 (2016). https://doi.org/10.1007/s10895-015-1760-5
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DOI: https://doi.org/10.1007/s10895-015-1760-5