Imidazophenanthridine ligands and metal complexes are provided. The compounds exhibit improved stability through a linking substitution that links a nitrogen bonded carbon of an imidazole ring to a carbon on the adjacent fused aryl ring. The compounds may be used in organic light emitting devices, particularly as emissive dopants, providing devices with improved efficiency, stability, and manufacturing. In particular, the compounds provided herein may be used in blue devices having high efficiency.
Stable carbonium ions. XLVIII. Halonium ion formation via neighboring halogen participation. Tetramethylethylene halonium ions
作者:George A. Olah、J. Martin. Bollinger
DOI:10.1021/ja00994a031
日期:1967.8
Synthetic Methods and Reactions III<sup>1</sup>. Halofluorination of Alkenes in Poly-Hydrogen Fluoride/Pyridine Solution
作者:George A. OLAH、Masatomo NOJIMA、lstvan KEREKES
DOI:10.1055/s-1973-22298
日期:——
Oxidative fluorination in amine-hf mixturess
作者:Jan H.H. Meurs、Wolf Eilenberg
DOI:10.1016/s0040-4020(01)87060-5
日期:1991.1
The selective electrochemical fluorination of alkenes, phenanthroline, naphthalene and chlorobenzene in neat amine-HF mixtures is described, together with the chemistry of 4,4-difluorocyclohexadienone.