Stable N-heterocyclic carbene (NHC) cyclometalated (C^C) gold(III) complexes as blue-blue green phosphorescence emitters

Tobias Von Arx, Alexander Szentkuti, Thomas N. Zehnder, Olivier Blacque, Koushik Venkatesan*

*Corresponding author for this work

Research output: Contribution to journalArticle

14 Citations (Scopus)


Blue and blue-green phosphorescent Au(iii) compounds based on a novel C^C chelate ligand framework are reported. The influence of the three different cyclometalated NHC ligands as well as the different ancillary ligands on phosphorescence emission energies and quantum efficiencies is evaluated. The complexes exhibit different emission behavior in solution, at 77 K and when doped in thin films of polymethyl methacrylate (PMMA) depending on the nature of the NHC ligands. A combination of the unique electronic structure of the Au(iii) complexes with the NHC ligand as part of the cyclometalating ligand framework and significantly enhanced emission properties of the complexes at higher energy could make these class of molecules highly interesting for applications in OLEDs and catalysis.

Original languageEnglish
Pages (from-to)3765-3769
Number of pages5
JournalJournal of Materials Chemistry C
Issue number15
Publication statusPublished - 21 Apr 2017
Externally publishedYes


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