Provided are compounds comprising a first ligand L.sub.A; wherein L.sub.A comprises a 5-membered heterocycle joined to a metal M by a M-C or M-N bond; wherein the 5-membered heterocycle comprises at least one boron atom; wherein M is selected from the group consisting of Os, Ir, Pd, Pt, Cu, Ag, and Au; and wherein L.sub.A does not comprise a structure of Formula I.

##STR00001##

wherein X is B or N; with the proviso that the 5-membered heterocycle does not comprise a B—B bond; and with the proviso that if M is Pd or Pt and the 5-membered heterocycle is fused to a benzene ring, the benzene ring is not part of a 6-membered chelate ring comprising M. Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

Provided are organometallic compounds comprising a first ligand L.sub.A comprising a multicyclic fused ring system wherein ligand L.sub.A is coordinated to a metal M; and wherein M is selected from the group consisting of Os, Ir, Pd, Pt, Cu, Ag, and Au. Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

The present specification relates to a color conversion film comprising a color conversion functional layer including a microcapsule phase change material, and a backlight unit and a display apparatus including the same.

An organic compound is represented by general formula (1) below: ##STR00001## where X.sub.1 and X.sub.2 are each independently selected from the group consisting of an alkyl group, an aryl group, and an aralkyl group; R.sub.11 to R.sub.16 are each independently selected from the group consisting of a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, a heterocyclic group, and a halogen atom; R.sub.21 and R.sub.22 are each independently selected from the group consisting of a hydrogen atom, an alkyl group, an aryl group, and an aralkyl group; and A.sub.1.sup.− and A.sub.2.sup.− each independently represent a monovalent anion.

Provided are organometallic compounds. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

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.

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 disclosure relates to an organic molecule, in particular for the application in optoelectronic devices. According to the disclosure, the organic molecule has a structure represented by Formula I:

##STR00001##

In Formula 1, R.sup.I, R.sup.II, R.sup.III, R.sup.IV, R.sup.V, R.sup.VI, R.sup.VII, R.sup.VIII, R.sup.IX, R.sup.X and R.sup.XI are each 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 each independently substituted by R.sup.5, C.sub.6-C.sub.18-aryl, wherein optionally one or more hydrogen atoms are each independently substituted by R.sup.5, and C.sub.3-C.sub.15-heteroaryl. R.sup.5 is independently selected from the group consisting of: hydrogen, deuterium, C.sub.1-C.sub.12-alkyl, and C.sub.6-C.sub.18aryl, wherein optionally one or more hydrogen atoms are each independently substituted by C.sub.1-C.sub.5-alkyl substituents; T, V, W, and X are each independently selected from the group consisting of: C.sub.1-C.sub.12-alkyl, and C.sub.6-C.sub.18-aryl, wherein optionally one or more hydrogen atoms are each independently substituted by C.sub.1-C.sub.5-alkyl substituents.

Provided are a heterocyclic compound represented by Formula 1-1 or 1-2, an organic light-emitting device including the heterocyclic compound, and an electronic apparatus including the organic light-emitting device:

##STR00001## wherein Formulae 1-1 and 1-2 are respectively the same as described in the present specification.

An organometallic compound represented by Formula 1:

M.sub.1(L.sub.11).sub.n11(L.sub.12).sub.n12   Formula 1

wherein, in Formula 1, M.sub.1 is a first-row transition metal of the Periodic Table of Elements, a second-row transition metal of the Periodic Table of Elements, or a third-row transition metal of the Periodic Table of Elements, L.sub.11 is a ligand represented by Formula 1-1, L.sub.12 is a monodentate ligand or a bidentate ligand, n11 is 1, and n12 is 0, 1, or 2:

##STR00001##

wherein the other substituents are as described in the detailed description.