Abstract
The synthesis and spectral studies of variously substituted 3-hydroxychromones have been carried out. A key relationship between the structural motif of synthesized 3-hydroxychromones (3-HCs) and their fluorescent properties was found. The chromones substituted with electron-donating group at 4′-position expressed the red shift of the N* and T* band and also exhibited the increased fluorescent intensity ratio while the chromones with electron-withdrawing group showed the blue shift of the N* and T* band. Therefore, these 3-HCs may behave as the possible fluorescent probes.
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Acknowledgments
One of the authors (Radhika Khanna) wishes to express her gratitude to the Department of Science and Technology (DST INSPIRE Fellowship), New Delhi for the financial assistance for the accomplishment of this work.
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Khanna, R., Kumar, R., Dalal, A. et al. Absorption and Fluorescent Studies of 3-Hydroxychromones. J Fluoresc 25, 1159–1163 (2015). https://doi.org/10.1007/s10895-015-1623-0
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DOI: https://doi.org/10.1007/s10895-015-1623-0