作者:Seiichi Uchiyama、Kazuyuki Takehira、Toshitada Yoshihara、Seiji Tobita、Tomohiko Ohwada
DOI:10.1021/ol062490r
日期:2006.12.1
The unusual fluorescence properties of 8-methoxy-4-methyl-2H-benzo[g]chromen-2-one (1) are described. The fluorophore 1 is almost nonfluorescent in aprotic solvent (e.g., fluorescence quantum yield Phi(f) < 0.0003 in n-hexane), whereas it strongly fluoresces at long wavelengths (> 450 nm) in protic solvent (e.g., Phi(f) = 0.21 in methanol). The fluorophore 1 also shows good applicability in developing a new fluorogenic (fluorescent "off-on") sensor.