Impact of Azobenzene Side Chains on the Ultraviolet-Visible and Fluorescence Properties of Coumarin Derivatives.

ABSTRACT: The effect of photoswitchable compounds on the light-emitting properties of nanoparticles has been drawing increasing attention. To investigate the effect of photoswitchable azobenzene units on the photophysical properties of coumarin, a biologically relevant fluorophore, photoresponsive azobenzene-coumarin derivatives were synthesized and characterized. The investigation of the effect of azobenzene isomerization on the ultraviolet (UV)-visible absorption and fluorescence properties of coumarin was explored. The azobenzene unit, attached to the coumarin chromophore at different positions via 3 and 8 carbon linkers, exhibited significant trans -cis isomerization upon UV irradiation at 365 nm, which affected both the absorption and fluorescence spectra of the coumarin part. The

SUBMITTER: Akdis Y 

PROVIDER: S-EPMC12573160 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature