Phosphorescent Cyclometalated Platinum(II) Imidazolinylidene Complexes

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

Abstract

We present the synthesis and characterization of six novel bidentate (Formula presented.) cyclometalated platinum(ii) complexes derived from saturated N-heterocyclic carbene precursors, namely 1-aryl-3-methyl-1H-4,5-dihydroimidazolium salts. The title compounds were then synthesized by a multi-step reaction, which includes an in situ generation of the silver carbene complex, followed by transmetalation to platinum and subsequent introduction of the β-diketonate ligand. Structural characterization by NMR experiments and solid-state structures prove the cyclometalation and the saturated backbone of the NHC motif. Photophysical and electrochemical properties of the platinum(ii) complexes were examined and studied in detail by DFT calculations. The title compounds are strongly emissive at room temperature in the sky-blue region of the visible spectrum and show quantum yields of up to 71 % in a PMMA matrix.

Details

Original languageEnglish
Pages (from-to)804-813
Number of pages10
JournalEuropean journal of inorganic chemistry
Volume2021
Issue number9
Publication statusPublished - 5 Mar 2021
Peer-reviewedYes

Keywords

ASJC Scopus subject areas

Keywords

  • Carbene ligands, Imidazolinylidene ligands, Phosphorescence, Platinum, Structure elucidation