Synthesis and photophysical properties of fluorescent 2,5-dibenzoxazolylphenols and related compounds with excited state proton-transfer
作者:Joel M. Kauffman、Gurdip S. Bajwa
DOI:10.1002/jhet.5570300626
日期:1993.12
A series of new 2,5-dibenzoxazolylphenols and relatedcompounds was prepared by condensation of hydroxy- and methanesulfonamidoterephthalic acids with 2-aminophenols. These displayed excitedstate intramolecular proton-transfer fluorescence at room temperature and above with quantum yields as high as 0.48 and emission peaks of 492-517 nm. The methanesulfonamido group was found about as effective a