A nitrogen-containing heterocyclic derivative in which an indole structure is fused to a benzophenanthrene ring is a novel material useful as a material for organic electroluminescence devices for the production of organic electroluminescence devices and electronic equipment.

A compound, an organic light-emitting device, and a flat display apparatus, the compound being represented by Formula 1, below: ##STR00001##

A compound, an organic light-emitting device, and a flat display apparatus, the compound being represented by Formula 1, below: ##STR00001##

The present invention relates to: an organic compound represented by a combination of Chemical Formulas 1 and 2; an organic optoelectronic device comprising the organic compound; and a display device.

##STR00001##

The present invention relates to: an organic compound represented by a combination of Chemical Formulas 1 and 2; an organic optoelectronic device comprising the organic compound; and a display device.

##STR00001##

The present invention relates to an organic electric element and a display device using the same as a hole transport layer comprising a composition composed of two or more compounds having similar structures to improve luminous efficiency, stability and life span of an electric element, and an electronic device including the same.

Provided is a novel probe for a biological specimen for labelling by itself and clearly visualizing one of a specific cell and a specific cell organ in a living body, the probe having excellent spectral characteristics and exhibiting excellent storage stability. The probe for a biological specimen contains, as an active agent, at least one kind of compound represented by a general formula (I). ##STR00001##

Novel processes, and intermediates, for making alkylated arylpiperazine and alkylated arylpiperidine compounds of the general formulas (I) and (VII), respectively ##STR00001##
wherein, R.sub.1 and R.sub.2 are individually selected from hydrogen, alkyl, substituted or alkyl; n=0, 1, or 2; Y=NR.sub.3R.sub.4, OR.sub.5, or SR.sub.5, where R.sub.3 and R.sub.4 are individually selected from acyl or sulfonyl, and where R.sub.5 is aryl or heteroaryl, or heterocyclic; and Ar is an aryl, heteroaryl, or heterocyclic compound.

Novel processes, and intermediates, for making alkylated arylpiperazine and alkylated arylpiperidine compounds of the general formulas (I) and (VII), respectively ##STR00001##
wherein, R.sub.1 and R.sub.2 are individually selected from hydrogen, alkyl, substituted or alkyl; n=0, 1, or 2; Y=NR.sub.3R.sub.4, OR.sub.5, or SR.sub.5, where R.sub.3 and R.sub.4 are individually selected from acyl or sulfonyl, and where R.sub.5 is aryl or heteroaryl, or heterocyclic; and Ar is an aryl, heteroaryl, or heterocyclic compound.

Provided is a compound of Formula 1: ##STR00001##
and an organic light emitting device including the same.