A New Class of Fluorescent Dye for Sensing Water in Organic Solvents by Photo-Induced Electron Transfer - A (Phenylamino)naphtho[1,2-d]oxazol-2-yl-Type Fluorophore with both Proton-Binding and Proton-Donating Sites

A new class of fluorescent dye for sensing water in organic solvents by photo-induced electron transfer (PET), based on a (phenylamino) naphtho [1,2-d]oxazol-2-yl-type fluorophore with both proton binding and proton donating sites, has been designed developed. The fluorophore exhibits a weak emission in organic solvents but a drastic enhancement in the fluorescence intensity is observed with increasing water content in organic solvents. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)