An excited state dynamics driven reaction: wavelength-dependent photoisomerization quantum yields in [Ru(bpy)₂(dmso)₂]².

ABSTRACT: We report the excited-state behavior of a structurally simple bis-sulfoxide complex, cis-S,S-[Ru(bpy)₂(dmso)₂]²⁺, as investigated by femtosecond pump-probe spectroscopy. The results reveal that a single photon prompts phototriggered isomerization of one or both dmso ligands to yield a mixture of cis-S,O-[Ru(bpy)₂(dmso)₂]²⁺ and cis-O,O-[Ru(bpy)₂(dmso)₂]²⁺. The quantum yields of isomerization of each product and relative product distribution are dependent upon the excitation wavelength, with longer wavelengths favoring the double isomerization product, cis-O,O-[Ru(bpy)₂(dmso)₂]²⁺. Transient absorption measurements on cis

SUBMITTER: Livshits MY 

PROVIDER: S-EPMC8159332 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature