Phosphorescent Cyclometalated Platinum(II) Imidazolinylidene Complexes

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

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

OriginalspracheEnglisch
Seiten (von - bis)804-813
Seitenumfang10
FachzeitschriftEuropean journal of inorganic chemistry
Jahrgang2021
Ausgabenummer9
PublikationsstatusVeröffentlicht - 5 März 2021
Peer-Review-StatusJa

Schlagworte

ASJC Scopus Sachgebiete

Schlagwörter

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