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DOE OSTI · 1909574

Dinuclear Ligand-to-Ligand Charge Transfer Complexes

Shultz, David·Stephenson, Riley·Kirk, Martin
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Abstract

The synthesis and characterization of dinuclear ligand-to-ligand charge transfer complexes are described. Each complex is comprised of square-planar platinum(II) coordinated to a 3-tert-butyl-orthocatecholate donor and a 4,4’-di-tert-butyl-2,2’-bipyridine acceptor. Both complexes exhibit donor x acceptor ligand-to-ligand charge transfer (LL’CT) bands in the visible spectrum. The platinum complexes are covalently attached at the catecholate 5-position to either a meta- or para-phenylene bridge fragment. Both cyclic voltammetry and electronic absorption spectroscopy exhibit features characteristic of intramolecular interaction between the platinum centres. The LL’CT excited state lifetimes are ~twofold longer than the mononuclear parent complex. Here, the properties of these complexes are discussed and compared to similar complexes in the literature.

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Shultz, David, Stephenson, Riley, Kirk, Martin. 2023-01-18. Dinuclear Ligand-to-Ligand Charge Transfer Complexes. https://doi.org/10.1039/d2dt03385b

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