Stereodifferentiation in the intramolecular singlet excited state quenching of hydroxybiphenyl–tryptophan dyads
作者:Paula Bonancía、Ignacio Vayá、Dimitra Markovitsi、Thomas Gustavsson、M. Consuelo Jiménez、Miguel A. Miranda
DOI:10.1039/c3ob27278h
日期:——
for coordination with water, as in the methylester (S)-BPOHMe or in the dyads, this effect was prevented; accordingly, the fluorescence quantum yields did not depend on the presence or absence of water. The fluorescence lifetimes in dry acetonitrile were 1.67, 0.95 and 0.46 ns for (S)-BPOH, (S,S)-1 and (S,R)-1, respectively, indicating that the observed quenching is indeed dynamic. In line with the steady-state