Cyclometalated platinum complexes with luminescent quantum yields approaching 100%

Eric Turner, Nathan Bakken, Jian Li

Research output: Contribution to journalArticle

97 Scopus citations

Abstract

A new class of cyclometalated tetradentate platinum complexes of the type Pt[N/\C-O-LL′] was synthesized and characterized. N /\C is a cyclometalating ligand such as phenyl-pyrazole (ppz), phenyl-methylimidazole (pmi), or phenyl-pyridine (ppy), and LL′ is an ancillary ligand such as phenoxyl-pyridine (popy). The complexes in this series are highly luminescent, emitting blue to green light in solution with quantum efficiencies ranging from 0.39 to 0.64 and luminescent lifetimes from 2 to 9 μs. When doped in a poly(methyl methacrylate) (PMMA) thin film, measured quantum efficiencies increase to 0.81-0.97 with lifetimes ranging from 4.5-10.4 μs. One notable example, the metal complex PtOO3, emits green light with a luminescent quantum efficiency approaching 100% and achieves approximately 100% electron-to-photon conversion efficiency in device settings.

Original languageEnglish (US)
Pages (from-to)7344-7351
Number of pages8
JournalInorganic chemistry
Volume52
Issue number13
DOIs
StatePublished - Jul 1 2013

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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