The present invention describes carbazole, dibenzofuran, dibenzothiophene and fluorene derivatives which are substituted by electron-deficient heteroaryl groups, in particular for use as triplet matrix materials in organic electroluminescent devices. The invention furthermore relates to a process for the preparation of the compounds according to the invention and to electronic devices comprising these compounds.

A compound having a formula (L.sub.A).sub.mIr(L.sub.B).sub.3−m having a structure selected from ##STR00001##
is disclosed. In the structures of formula (L.sub.A).sub.mIr(L.sub.B).sub.3-m, m is 1 or 2, R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 are each independently selected from hydrogen, deuterium, C1 to C6 alkyl, C1 to C6 cycloalkyl, and partially or fully deuterated variants thereof, and partially or fully fluorinated variants thereof, and, R.sup.6 is selected from C1 to C6 alkyl, C1 to C6 cycloalkyl, and partially or fully deuterated variants thereof, and partially or fully fluorinated variants thereof.

A compound of Formula I ##STR00001## wherein L is a bidentate ligand coordinated to a metal M; each ring K is the same, and represents a 5-membered or 6-membered heteroaryl ring and with ring J forms a 5-member cyclometallated ring; A.sup.1 and A.sup.1′ are the same and selected from CR.sup.1 or N; A.sup.2 and A.sup.2′ are the same and selected from CR.sup.2 or N; A.sup.3 and A.sup.3′ are the same and selected from CR.sup.3 or N; each R.sup.4 with its corresponding ring position R.sup.4′ are the same, and R.sup.1 to R.sup.5 are as defined in the specification. An OLED with an organic layer that includes a compound of Formula I and a consumer product that includes the OLED. A method of making a compound of Formula I is also described.

A novel compound having a first ligand L.sub.A of ##STR00001##
is disclosed. The compound is useful as emitter dopant in OLEDs.

This blue phosphorescent material includes: a central metal containing iridium; and a phenyl-imidazopyridine ligand which is a bidentate ligand of the central metal and has an iridium-carbon bond with the central metal, wherein the ligand may include a ligand in which a 2,6-dimethylphenyl functional group has been introduced to a phenyl group of the ligand. The present application relates to a blue phosphorescent material, a production method thereof, and photophysical properties thereof, the blue phosphorescent material having an iridium-carbon bond and including a phenyl-imidazopyridine ligand to which a sterically hindered functional group has been introduced.

An iridium phosphorescent material comprises an iridium-containing core metal and a phenyl-pyridine ligand which is a bidentate ligand of the central metal and in which a steric hindrance phenyl group is introduced, wherein the steric hindrance phenyl is introduced at the ortho position of the phenyl group of the ligand. The present application relates to an iridium phosphorescent material comprising a phenylpyridine ligand in which a steric hindrance functional group is introduced, a method for preparing the same, and the photophysical properties of the material.

A method of producing a photochromic resin body includes a first step, a second step and a third step. In the first step, a sublimable photochromic dye having sublimability is applied to a base body so as to obtain a function-adding base body. In the second step, the function-adding base body obtained in the first step is set to face a resin body, the function-adding base body is heated to sublimate the sublimable photochromic dye applied to the function-adding base body, and the sublimable photochromic dye is deposited on the resin body. In the third step, the resin body on which the sublimable photochromic dye is deposited in the second step is heated to fix the sublimable photochromic dye on the resin body.

The present disclosure relates to an organic electroluminescence device including an organometallic compound represented by Formula 1 or Formula 2 below in an emission layer, to achieve long service life of the organic electroluminescence device. ##STR00001##

Iridium complexes comprising three different bidentate ligands and their use in OLEDs to enhance the device efficiency and lifetime are disclosed. The complexes have a structure of the formula Ir(L.sub.A)(L.sub.B)(L.sub.C), where ligand L.sub.A is selected from a variety of structures, ligand L.sub.B has the structure

##STR00001##

and L.sub.C has the structure

##STR00002##

In these structures rings A, B, C, and D are each independently a 5 or 6-membered carbocyclic or heterocyclic ring; R.sup.1, R.sup.2, R.sup.3, R.sup.A, R.sup.B, R.sup.C, and R.sup.D can be any of a variety of substituents, and Z.sup.1 and Z.sup.2 are each independently C or N.

An optoelectronic component is specified comprising: at least one radiation-emitting semiconductor chip (1) which during operation emits electromagnetic radiation of a first wavelength range, and an absorber, wherein the absorber is predominantly transmissive to the emitted electromagnetic radiation of the first wavelength range, and the absorber absorbs at least 70% of the total radiation intensity of the electromagnetic spectrum of the visible light of the ambient light.