Coumarin 6 precipitates in water as microcrystals resulting in a considerable loss in fluorescence yield. Differential interaction of the microcrystals with cyclodextrins of different cavity size enhances the fluorescence yield of the dye by 160 fold in some cases. Highly fluorescent ultrathin lamellar entities form through hydrogen bonding.
P. Ghosh, T. Das, A. Maity, S. Mondal and P. Purkayastha, RSC Adv., 2015, 5, 4214 DOI: 10.1039/C4RA13706J
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