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 EL device practically satisfactory in terms of its light-emitting characteristics, driving voltage, and durability, and a compound for an organic EL device to be used in the device. The organic EL device has a structure in which an anode, a plurality of organic layers including a light-emitting layer, and a cathode are laminated on a substrate, and the organic EL device contains, in at least one organic layer selected from the light-emitting layer, a hole-transporting layer, an electron-transporting layer, a hole-blocking layer, and an electron-blocking layer, an adamantane compound having at least one triarylborane structure in a molecule thereof as the compound for an organic EL device.

The present invention relates to a compound of the formula (I), (II) or (III), to the use of the compound in an electronic device, and to an electronic device comprising a compound of the formula (I), (II) or (III). The present invention furthermore relates to a process for the preparation of a compound of the formula (I), (II) or (III) and to a formulation comprising one or more compounds of the formula (I), (II) or (III).

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.

An aromatic amine derivative is represented by the following formula (1). In the formula (1), R.sub.2 to R.sub.5, R.sub.7 to R.sub.9 and R.sub.10 are each independently a hydrogen atom or a substituent. R.sub.1 and R.sub.6 in the formula (1) are each represented by the following formula (2), in which L.sub.1 to L.sub.3 are each independently, for instance, a single bond. Ar.sub.1 in the formula (2) is a monovalent residue derived from a ring structure of the following formula (4), in which X is an oxygen atom or a sulfur atom and at least one of R.sub.11 to R.sub.18 is a substituted aryl group. Ar.sub.1 in the formula (1) is, for instance, an aryl group or a monovalent residue derived from the ring structure of the formula (4). ##STR00001##

An exemplary embodiment of the present application provides a new compound and an organic electronic device using the same. The organic electronic device according to an exemplary embodiment of the present application shows excellent characteristics in terms of efficiency, driving voltage, and service life.

Tridentate platinum, palladium, and gold complexes of Formulas A-I and A-II and tridentate iridium and rhodium compounds of Formulas B-I, B-II, and B-III suitable for delayed fluorescent and phosphorescent or phosphorescent emitters in display and lighting applications. ##STR00001## ##STR00002##

Stimuli-switchable moieties, monomers incorporating stimuli-switchable moieties, and polymers incorporating such stimuli-switchable moieties are provided. The stimuli-switchable moiety can be a pyrano aryl chromenone-derivative. The stimuli-switchable monomer can be a lactone monomer. The stimuli-switchable monomer can be an amino acid, which can be incorporated into a specific peptide sequence by peptide synthesis.

A polycyclic compound according to an embodiment of the inventive concept is represented by the following Formula 1:

##STR00001##

In Formula 1, Ar.sub.1 and Ar.sub.2 are each independently substituted or unsubstituted aryl group having 6 to 30 carbon atoms for forming a ring, or substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms for forming a ring, where Ar.sub.1 and Ar.sub.2 may combine with each other to form a ring, and A is represented by the following Formula 2-1 or 2-2:

##STR00002##

A condensed cyclic compound and an organic light-emitting device including the same are provided. The condensed cyclic compound may have a structure shown below:

##STR00001## wherein details about the possible constituents are provided in detail in the disclosure.