A compound of Formula 1, as disclosed herein, is useful in an organic light emitting device and apparatuses including the same.

The invention relates to an electronic device, to the use thereof, and to a method for the production thereof.

The invention relates to compounds comprising functional substituents in a specific spatial arrangement, devices containing same, and the preparation and use thereof.

An organic molecule that may be used application in optoelectronic devices is disclosed. The organic molecule has a structure of formula 1, wherein R.sup.I, R.sup.II, R.sup.III, R.sup.IV, R.sup.V, R.sup.VI, R.sup.VII, R.sup.A, R.sup.B, R.sup.C, R.sup.D, R.sup.E, R.sup.F, R.sup.G and R.sup.H are independently selected from the group consisting of: hydrogen, deuterium, halogen, C.sub.1-C.sub.12-alkyl, wherein optionally one or more hydrogen atoms are independently substituted by R.sup.5; C.sub.6-C.sub.18-aryl, wherein optionally one or more hydrogen atoms are independently substituted R.sup.5; and C.sub.3-C.sub.15-heteroaryl, wherein optionally one or more hydrogen atoms are independently substituted R.sup.5; optionally, any adjacent two of R.sup.I, R.sup.II, R.sup.III, R.sup.IV, R.sup.V, R.sup.VI, R.sup.VII, R.sup.A, R.sup.B, R.sup.C, R.sup.D, R.sup.E, R.sup.F, R.sup.G and R.sup.H form a monocyclic ring system having 5 to 8 C-atoms, at least R.sup.A and R.sup.B as well as R.sup.C and R.sup.D form a monocyclic ring system having 5 to 8 C-atoms, wherein, optionally, each hydrogen is independently substituted.

##STR00001##

According to the present invention, options for materials for organic devices such as materials for organic EL elements are increased by addition of a cycloalkane, by condensation, to a polycyclic aromatic compound in which a plurality of aromatic rings are linked together by boron atoms, oxygen atoms, and the like. By using a novel cycloalkane-condensed polycyclic aromatic compound as a material for an organic EL element, for example, an organic EL element having excellent emission efficiency and element life is provided.

The present disclosure provides four monocarborane cluster-containing platinum complexes and a preparation method and an OLED application. The monocarborane cluster-containing platinum complex has a general structural formula selected from the group consisting of the following general structural formulas:

##STR00001##

wherein —R.sub.1 is selected from the group consisting of C.sub.4-12 linear alkyl; each R and R.sub.5 are independently any one selected from the group consisting of —CH.sub.3, H, tert-butyl and aryl; aryl is any one selected from the group consisting of phenyl, carbazole

##STR00002##

and aniline

##STR00003##

wherein R.sub.2 is any one selected from the group consisting of methyl, tert-butyl and phenyl; R.sub.3 is any one selected from the group consisting of methyl, tert-butyl and phenyl; n is 1 to 3; X is C element; when the ligand of the general structural formula is triazole, X is N element; —CB.sub.11H.sub.11 is monocarborane with a structure of

##STR00004##

An organic electroluminescence device includes: an anode; an emitting layer; and a cathode, the emitting layer containing a first material, a second material and a third material, the first material being a fluorescent material, the second material being a delayed fluorescent material, the third material having a singlet energy larger than a singlet energy of the second material.

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

##STR00001##

To provide a practically useful organic electroluminescent device which is improved in luminous efficiency and at the same time, sufficiently secures the stability during driving. An organic electroluminescent device, wherein a light-emitting layer includes two host materials different from each other, and a dopant material, one of the host materials is a compound represented by general formula (1) and the other of the host materials is a compound represented by general formula (2). A ring A is a heterocycle represented by formula (1a), X represents N or C—Ar′, Y represents O, S, N—Ar.sup.3, or C—Ar.sup.4Ar.sup.5, and any one of Z.sup.1 to Z.sup.4 represents a carbon atom binding to a 6-membered ring containing X and the others and Z.sup.5 to Z.sup.8 each represent C—Ar′ or N. Ar, Ar′ and Ar.sup.1 to Ar.sup.5 each represent, for example, hydrogen, or an alkyl group having 1 to 20 carbon atoms. A ring B is a heterocycle represented by formula (2a), and Ar.sup.6 and Ar.sup.7 each represent, for example, hydrogen, or an alkyl group having 1 to 20 carbon atoms.

The present disclosure relates to an organic electroluminescent compound, an organic electroluminescent material and an organic electroluminescent device comprising the same, a plurality of host materials comprising at least one first host material and at least one second host material, and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure as a single host material or as a plurality of host materials, it is possible to produce an organic electroluminescent device having improved driving voltage, luminous efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.