There uses an organic electroluminescent element heterocyclic compounds, and
2014
The present invention provides an excellent life characteristic novel cyclic organic electroluminescent element azine compound. (Substituent B each independently represent a phenyl group having at least one nitrogen carbon atoms, an alkyl group having 1 to 12 carbon, diazaphenylene groups adjacent to the nitrogen atom of carbon, or quinazolinyl).
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KQI