title: Synthesis and characterization of luminescent bis-cyclometalated platinum(IV) complexes.
abstract: Presented is the synthesis and characterization of a series of luminescent heteroleptic bis-cyclometalated platinum(IV) complexes. An oxidation-facilitated cyclometalation is employed to convert platinum(II) pendant species into bis-cyclometalated platinum(IV) dichlorides, which are transformed into the tris-chelated diimine complexes through ligand substitution. The structure-property relationship is probed by judiciously varying substituents on both the C(∧)N and the N(∧)N ligands resulting in a family of complexes exhibiting blue emission, long excited-state lifetimes, and highly efficient oxygen quenching. Excited-state properties are corroborated by static and time-dependent density-functional theory calculations of both the singlet and the triplet state.
authors.affiliation: Department of Chemistry, Princeton University, Princeton, New Jersey 08540, United States.
authors.forename: Dustin M
authors.initials: DM
authors.lastname: Jenkins
authors.forename: Stefan
authors.initials: S
authors.lastname: Bernhard