Toward Understanding Ligand-Directed Excited-State Electron Flow in Bridged Ruthenium(II) Complexes.

ABSTRACT: Effectively and efficiently capturing and directing light to drive chemical reactions in molecular systems remains a challenge. A series of tpphz (tetrapyrido[3,2-a:2',3'-c:3'',2''-h:2''',3'''-j]phenazine)-bridged bimetallic Ru complexes was prepared using substituted polypyridyl distal ligands with a range of electron-withdrawing (EW) and electron-donating (ED) substituents to investigate the flow of electrons within the complex. The excited state is localized on the distal ligand with the most EW substituent, while charge transfer to the tpphz bridge is promoted by ED substituents. Density functional theory and time-dependent density functional theory were employed to identify the electronic transitions in the visible region of the spectrum and are supported by electrochemical and

SUBMITTER: Bierling HM 

PROVIDER: S-EPMC12709575 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature