Journal
BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY
Volume 14, Issue -, Pages 664-671Publisher
BEILSTEIN-INSTITUT
DOI: 10.3762/bjoc.14.54
Keywords
ancillary ligand; beta-diketonates; photoluminescence; platinum(II) complex; quantum yield
Categories
Ask authors/readers for more resources
Luminescent organometallic platinum(II) compounds are of interest as phosphors for organic light emitting devices. Their emissive properties can be tuned by variation of the ligands or by specific electron-withdrawing or electron-donating substituents. Different ancillary ligands can have a profound impact on the emission color and emission efficiency of these complexes. We studied the influence of sterically hindered, aryl-substituted beta-diketonates on the emission properties of (CC)-C-boolean AND* cyclometalated complexes, employing the unsubstituted methyl-phenyl-imidazolium ligand. The quantum yield was significantly enhanced by changing the auxiliary ligand from acetylacetonate, where the corresponding platinum(II) complex shows only a very weak emission, to mesityl (mes) or duryl (dur) substituted acetylacetonates. The new complexes show very efficient emission with quantum yields > 70% in the sky-blue spectral region (480 nm) and short decay times (< 3 mu s).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available