Synthesis and photophysical studies of new pyrenylamino acids
作者:Goreti Pereira、Elisabete M.S. Castanheira、Peter Schellenberg、M. Belsley、Paula M.T. Ferreira、Luís S. Monteiro
DOI:10.1016/j.tet.2013.10.035
日期:2013.12
Two new pyrenylamino acid derivatives were synthesized from beta-bromodehydroalanine derivatives in good yields using addition and elimination reactions.The photophysical properties of the two new pyrenylamino acids were studied in several solvents. Steady-state and time-resolved fluorescence measurements revealed that the bipyrenylamino acid undergoes excimer formation, this process being solvent dependent. Rate constants for excimer formation and dissociation were calculated. The monopyrenylamino acid exhibits a photophysical behavior similar to that of pyrene, including the sensitivity to solvent polarity.The results point to a potential use of these new pyrenyl derivatives as fluorescent probes for peptides and proteins. (C) 2013 Elsevier Ltd. All rights reserved.