Visible Light Absorption and Long-Lived Excited States in Dinuclear Silver(I) Complexes with Redox-Active Ligands.
Inorg Chem
; 59(24): 18338-18344, 2020 Dec 21.
Article
en En
| MEDLINE
| ID: mdl-33296590
ABSTRACT
Well-defined dinuclear silver(I) complexes have been targeted for applications in catalysis and materials chemistry, and the effect of close silver-silver interactions on electronic structure remains an area of active inquiry. In this study, we describe the synthesis, structure, and photophysical properties of dimeric silver complexes featuring a redox-active naphthyridine diimine ligand. Unusually for silver(I), these complexes display absorption features in the visible region due to metal-metal to ligand charge transfer (MMLCT) transitions, which arise from the combination of close silver-silver interactions and low-lying ligand π* orbitals. The complexes' photophysical properties are explored via a combination of spectroscopic and computational studies, revealing MMLCT excited state lifetimes that exceed 1 µs. These results portend previously unforeseen applications of silver(I) dimers in visible light absorption and excited state reactivity.
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MEDLINE
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En
Revista:
Inorg Chem
Año:
2020
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Article
País de afiliación:
Estados Unidos