2009, Vol.82, No.1

118-120

2-(2′-Hydroxynaphthalenyl)benzoxazole (1) emits fluorescence with small Stokes shift from its excited tautomer (K*), produced by excited-state intramolecular proton transfer. Intramolecular hydrogen bonding may be responsible for this phenomenon on comparison with the results of 2-(2′-hydroxyphenyl)benzoxazole (HBO) and 2-(naphthalene-1-yl)benzoxazole (2) as a reference compound.