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Rotamerisation and intramolecular proton transfer of 2-(2'-hydroxyphenyl)oxazol...
Purkayastha, Pradipta; Chattopadhyay, NitinSemi-empirical (AM1-SCI) calculations have been performed on 2-(2'-hydroxyphenyl)oxazole (HPO), 2-(2'-hydroxyphenyl)imidazole (HPI) and 2-(2'-hydroxyphenyl)thiazole (HPT) to rationalise the photophysical behaviour of the compounds exhibiting intramolecular rotation as well as excited state intramolecular proton transfer (ESIPT). The calculations reveal that there is a gradual variation in the properties from HP...
Effect of cyclodextrin encapsulation on the photocyclization of diphenylamine: ...
Sur, Debjani; Purkayastha, Pradipta; Bera, Subhash Chandra; Chattopadhyay, NitinThe kinetics of the photocyclization of diphenylamine (DPA) to carbazole (CAZL) has been studied fluorometrically in air-equilibrated aqueous solution as well as in constrained microheterogeneous media provided by [alpha]-, [beta]-, and [gamma]- cyclodextrins (CDs). It is observed that the fluorophore is embedded within the CD cavities without any alteration of the overall reaction quantum yield in the differen...
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