1,8-naphthyridine compound and organic light-emitting device...

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Reexamination Certificate

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C428S917000, C313S504000, C313S506000, C257SE51050, C546S122000

Reexamination Certificate



Provided a novel 1,8-naphthyridine compound represented by the following general formula [I]:wherein R1to R6each represent a hydrogen atom; an alkyl group, a halogen atom; a trifluoromethyl group; and a cyano group, and may be the same as or different from one another, and that at least two of R1to R6each represent an aralkyl group, an aryl group, a heterocyclic group, a condensed polycyclic aromatic group, a condensed polycyclic heterocyclic group and an aryloxy group which may be substituted; and a substituted amino group. The 1,8-naphthyridine is employed in an organic compound layer provided between a pair of electrodes in an organic light-emitting device.

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