Correlated solvent coordinates accelerate multi-donor proton-coupled electron transfer.

ABSTRACT: The rate of charge transfer within a discrete donor-acceptor (D/A) pair is well-described by semi-classical electron transfer theory, but the effects of multiple equivalent redox sites remain less understood. We report a series of ground-state intramolecular proton-coupled electron transfer (PCET) complexes designed to isolate the effects of donor number, N, while holding geometry, coupling, and driving forces constant. The [Ru(L)_3-N (OH) _N ]²⁺ complexes incorporate one, two, or three identical phenolic electron donors linked to Ru through rigid phenanthroline bridges (OH = 2,4-di-tert-butyl-6-(1-methyl-1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)phenol). Upon flash photolysis and oxidative quenching with methyl violo

SUBMITTER: Manbeck GF 

PROVIDER: S-EPMC12670119 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature