One portion of our research program focuses on PtII complexes bearing a lone polyimine fragment in concert with various arylacetylide subunits. These molecules yield either efficient, long-lived charge transfer based photoluminescence ranging from blue-green to red or intraligand-based excited states, some of which produce phosphorescence spanning the green to the near-IR. Such chromophores also display impressive excited state absorption properties and fascinating dynamics, tunable with variation in solvent polarity. Some recent examples to be presented include perylenediimide and phenylene-ethynylene-containing PtII acetylides. The latter are particularly intriguing as they provide clear-cut experimental evidence for solvent-induced configuration mixing and complete triplet excited state inversion at room temperature.

Excited state decay pathways in platinum(II) acetylide charge transfer chromophores

245th National Meeting (2013)

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