Complex Multistate Photophysics of a Rhodanine Photoswitch.

ABSTRACT: Development of new and improved photoswitches for molecular photonics and photo-pharmaceutics is an increasingly important research objective. Recently a promising family of photoswitches based on the rhodanine motif was described. Here, the photophysics of a typical example are investigated by ultrafast UV and IR spectroscopy and quantum chemical calculations. Remarkably, the photophysics are very different to and more complex than those of closely related monomethine photoswitches, which relax by ultrafast internal conversion to the electronic ground state. In the rhodanine photoswitch, the allowed Franck-Condon excited state also relaxes on a sub-picosecond timescale, but the ground state is repopulated only after several hundred picoseconds. Instead, the Franck-Condon state relaxes thr

SUBMITTER: Fatima A 

PROVIDER: S-EPMC12416450 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature