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Aninda Chatterjee and Debabrata Seth Photophysical Properties of 7-(diethylamino)Coumarin-3-carboxylic Acid in the Nanocage of Cyclodextrins and in Different Solvents and Solvent Mixtures Photochemistry and Photobiology 89

Article first published online: 2 NOV 2012 | DOI: 10.1111/php.12000

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The photophysical properties of 7-(diethylamino)coumarin-3-carboxylic acid (7-DCCA) were studied in three cyclodextrins (α, β, γ-CDs) using steady state absorption, emission and time-resolved fluorescence spectroscopy. We have proposed that 7-DDCA form 1:1 capped complex with β-CD. In presence of urea, 7-DCCA form 1:1 inclusion complex with β-CD. With γ-CD it forms 1:1 and 1:2 (guest:host) inclusion complex. The photophysics of 7-DCCA was studied in neat solvents and solvent mixtures. It was found that the photophysics of 7-DCCA depended on the structural feature of the solvents and solvent mixtures.

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