Synthesis, crystal structures and photoluminescence of anthracen- and pyrene-based coumarin derivatives

摘要

Two new anthracen- and pyrene-based coumarin derivatives, 3-(4-(anthracen-10-yl)phenyl)coumarin (4) and 3-(4-(pyrene-1-yl)phenyl)coumarin (5), were synthesized and characterized by FT-IR, H-1 NMR, element analysis and single crystal X-ray crystallography. The UV-vis absorption and photoluminescence spectra of these coumarin derivatives were investigated. The results show that compound 4 and 5 exhibit blue and blue-green emissions, respectively, under ultraviolet light excitation. Compared with the compound 4, the emission peak of compounds was bathochromically shifted by about 80 nm due to the more planar structure and larger pi-conjugation. (c) 2015 Elsevier B.V. All rights reserved.