Jump to main content
Jump to site search

Issue 18, 2015
Previous Article Next Article

Synthesis and characterization of phosphorescent platinum and iridium complexes with cyclometalated corannulene

Author affiliations

Abstract

Synthesis, structural and characterization data are provided for Pt(II) and Ir(III) complexes cyclometalated with 2-(corannulene)pyridine (corpy), (corpy)Pt(dpm) and (corpy)Ir(ppz)2 (dpm = dipivaloylmethanato, ppz = 1-phenylpyrazolyl). A third compound, (phenpy)Ir(ppz)2 (phenpy = 2-(5-phenanthryl)pyridyl), was also prepared to mimic the steric bulk of (corpy)Ir(ppz)2. X-ray analysis reveals bowl depths of 0.895 Å for (corpy)Pt(dpm) and 0.837 Å in (corpy)Ir(ppz)2. Neither complex displayed bowl-to-bowl stacking in the crystal lattice. A fluxional process for (corpy)Ir(ppz)2 attributed to bowl inversion of corrannulene is observed in solution with a barrier (ΔG = 13 kcal mol−1) and rate (k = 2.5 × 103 s−1) as determined using variable temperature 1H NMR spectroscopy. All of the complexes display red phosphorescence at room temperature with quantum yields of 0.05 in solution and 0.2 in polymethyl methacrylate (PMMA).

Graphical abstract: Synthesis and characterization of phosphorescent platinum and iridium complexes with cyclometalated corannulene

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 Nov 2014, accepted on 05 Feb 2015 and first published on 10 Feb 2015


Article type: Paper
DOI: 10.1039/C4DT03541K
Author version available: Download Author version (PDF)
Citation: Dalton Trans., 2015,44, 8456-8466
  •   Request permissions

    Synthesis and characterization of phosphorescent platinum and iridium complexes with cyclometalated corannulene

    J. W. Facendola, M. Seifrid, J. Siegel, P. I. Djurovich and M. E. Thompson, Dalton Trans., 2015, 44, 8456
    DOI: 10.1039/C4DT03541K

Search articles by author

Spotlight

Advertisements