Disclosed are a heterocyclic compound and an organic light emitting device including the same.

The present disclosure relates to a novel compound having excellent hole injection capabilities and transport capabilities, light-emitting capabilities, and the like, and an organic electroluminescent device which includes the compound in one or more organic material layers thereof so as to improve characteristics such as light-emitting efficiency, driving voltage, and a service life.

A composition of materials including a first compound having a structure according to Formula I ##STR00001##

An organic molecule is disclosed having a a first chemical unit having a structure according to Formula I ##STR00001## and two second chemical units, which are respectively the same or different in each occurrence, and have a structure according to Formula II, ##STR00002## wherein, in each case, the first chemical unit s connected to the two second chemical units via a single bond.

A metal complex (1) is useful for producing a light emitting device having excellent external quantum efficiency.

##STR00001##

M represents Ir; n.sup.1 is 1 or more; n.sup.1+n.sup.2 is 3; E.sup.1 and E.sup.2 are nitrogen or carbon atoms; Ring L.sup.1 represents an aromatic hetero ring; Ring L.sup.2 represents an aromatic hydrocarbon or an aromatic hetero ring; A.sup.1-G.sup.1-A.sup.2 represents an anionic bidentate ligand, and Ring L.sup.1 or Ring L.sup.2 has a group (2).

##STR00002##

R.sup.3 represents an alkyl group; R.sup.4 to R.sup.8 are each a hydrogen atom or an alkyl group; X represents an arylene group; k.sub.1 represents 0 to 3. When (1) has only one type of (2), (i) is satisfied: (i) Ring L.sup.1 is a monocyclic 5-membered aromatic hetero ring; and at least one Ring L.sup.2 has formula (2) where R.sup.3 is a phenyl group, R.sup.4 is a hydrogen atom, and R.sup.3 and R.sup.4 are combined to form a fluorene ring.

The present disclosure relates to the fields of near-infrared surgical navigation fluorescent molecules, cell marker imaging and so on, and in particular discloses an active targeting near-infrared fluorescent small molecule structure and a preparation method thereof. The present disclosure prepares the active targeting near-infrared fluorescent small molecule with pemetrexed disodium and derivatives thereof as active targeting groups by utilizing an organic total synthesis method. Such active targeting near-infrared fluorescent molecule has the advantages of high active targeting property, strong specificity, good water solubility, high fluorescence quantum yield and so on.

Provided are an organic EL device having a high emission efficiency, a material for organic EL devices, which is capable of realizing the same, and the like. More specifically, provided are a compound represented by the following formula (1), a material for organic electroluminescence devices, which contains the compound, an organic electroluminescence device using the compound, and an electronic equipment provided with the organic electroluminescence device:

##STR00001##

wherein Ar represents a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted heteroaryl group having 5 to 50 ring atoms, or a group formed by a combination of these groups, and W to R.sup.9 each independently represent a hydrogen atom or a substituent, provided that any pair of R.sup.2 and R.sup.3, R.sup.3 and R.sup.4, R.sup.4 and R.sup.5, R.sup.6 and R.sup.7, R.sup.7 and R.sup.8, and R.sup.8 and R.sup.9 are optionally bonded to each other to form a benzene ring.

A compound for an organic optoelectronic device, an organic light emitting diode including the compound, and a display device including the organic light emitting diode are provided and the compound in which moieties represented by Chemical Formulae I and II that are sequentially linked is provided and thus, the organic light emitting diode has excellent life-span characteristics due to excellent electrochemical and thermal stability and high luminous efficiency at a low driving voltage.

Provided are an organic electroluminescence device having high current efficiency and a long lifetime, and a biscarbazole derivative for realizing the device. The biscarbazole derivative has a specific substituent. The organic EL device has a plurality of organic thin-film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin-film layers contains the biscarbazole derivative.

The compound represented by the following general formula is useful as a light emitting material. Ar.sup.1 represents an arylene group, Ar.sup.2 and Ar.sup.3 represent an aryl group, and R.sup.1 to R.sup.8 represent a hydrogen atom or a substituent, provided that at least one of R.sup.1 to R.sup.8 represents a diarylamino group. ##STR00001##