Abstract: Compounds exhibiting high hole mobility and/or high glass transition temperatures are provided which are of the formula [Ar1]m[Ar2]n wherein: m is an integer from 1-3 and n is an integer and may be 1 or 2; Ar1 represents a thianthrene residue having a linkage to Ar2 at one or two positions selected from ring positions 1-4 and 5-8 and optionally mono-, bi- or poly-substituted with C1-C4-alkyl-, C1-C4-alkoxy-, fluoro, phenyl or biphenyl which in the case of phenyl or biphenyl may be further substituted with C1-C4-alkyl-, C1-C4-alkoxy- or fluoro; Ar2 represents a residue derived from an arylamine in which the aryl rings are phenyl, naphthyl or anthracenyl optionally substituted with C1-C4-alkyl, C1-C4-alkoxy- or fluoro, a polycyclic fused or chain aromatic ring system optionally containing nitrogen or sulphur and in a chain aromatic ring system optionally containing one or more chain oxygen or sulphur atoms, a triarylphosphine oxide or an arylsilane the rings of any of which are optionally substituted with C1

Abstract: Compounds exhibiting high hole mobility and/or high glass transition temperatures are provided which are of the formula [Ar1]m[Ar2]n wherein: m is an integer from 1-3 and n is an integer and may be 1 or 2; Ar1 represents a thianthrene residue having a linkage to Ar2 at one or two positions selected from ring positions 1-4 and 5-8 and optionally mono-, bi- or poly-substituted with C1-C4-alkyl-, C1-C4-alkoxy-, fluoro, phenyl or biphenyl which in the case of phenyl or biphenyl may be further substituted with C1-C4-alkyl-, C1-C4-alkoxy- or fluoro; Ar2 represents a residue derived from an arylamine in which the aryl rings are phenyl, naphthyl or anthracenyl optionally substituted with C1-C4-alkyl-, C1-C4-alkoxy- or fluoro, a polycyclic fused or chain aromatic ring system optionally containing nitrogen or sulphur and in a chain aromatic ring system optionally containing one or more chain oxygen or sulphur atoms, a triarylphosphine oxide or an arylsilane the rings of any of which are optionally substituted with C

Abstract: Compounds exhibiting high hole mobility and/or high glass transition temperatures together with favourable HOMO, LUMO and triplet levels are provided which are 2-(4?-Diphenylamino)phenyl-8-(1?-thianthrenyl)- dibenzothiophene and 4-(1-Thianthrenyl)-bis(triphenylamine). The compounds may be used for hole transport layers e.g. in OLED devices.

Abstract: Compounds exhibiting high hole mobility and/or high glass transition temperatures are provided which are of the formula [Ar1]m[Ar2]n wherein: m is an integer from 1-3 and n is an integer and may be 1 or 2; Ar1 represents a thianthrene residue having a linkage to Ar2 at one or two positions selected from ring positions 1-4 and 5-8 and optionally mono-, bi- or poly-substituted with C1-C4-alkyl-, C1-C4-alkoxy-, fluoro, phenyl or biphenyl which in the case of phenyl or biphenyl may be further substituted with C1-C4-alkyl-, C1-C4-alkoxy- or fluoro; Ar2 represents a residue derived from an arylamine in which the aryl rings are phenyl, naphthyl or anthracenyl optionally substituted with C1-C4-alkyl-, C1-C4-alkoxy- or fluoro, a polycyclic fused or chain aromatic ring system optionally containing nitrogen or sulphur and in a chain aromatic ring system optionally containing one or more chain oxygen or sulphur atoms, a triarylphosphine oxide or an arylsilane the rings of any of which are optionally substituted with C

Abstract: In OLEDs, improved efficiency is obtained by compounds which can form inter alia electron injection layers of the formula (I) wherein R1 is a 1-5 ring aryl (including polycyclic), aralkyl or heteroaryl group which is optionally substituted with one or more C1-C4 alkyl, alkoxy or cyano; R2 and R3 together form a 1-5 ring aryl (including polycyclic), aralkyl or heteroaryl group which is optionally substituted with C1-C4 alkyl, alkoxy or cyano; R4 is hydrogen, C1-C4 alkyl or aryl; and Ar is monocyclic, bicyclic or tricyclic aryl or heteroaryl which is optionally substituted with one or more C1-C4-alkyl or alkoxy groups, or an oligomer thereof.

Abstract: Compounds exhibiting high hole mobility and/or high glass transition temperatures are provided which are of the formula [Ar1]m[Ar2]n wherein: m is an integer from 1-3 and n is an integer and may be 1 or 2; Ar1 represents a thianthrene residue having a linkage to Ar2 at one or two positions selected from ring positions 1-4 and 5-8 and optionally mono-, bi- or poly-substituted with C1-C4-alkyl-, C1-C4-alkoxy-, fluoro, phenyl or biphenyl which in the case of phenyl or biphenyl may be further substituted with C1-C4-alkyl-, C1-C4-alkoxy- or fluoro; Ar2 represents a residue derived from an arylamine in which the aryl rings are phenyl, naphthyl or anthracenyl optionally substituted with C1-C4-alkyl-, C1-C4-alkoxy- or fluoro, a polycyclic fused or chain aromatic ring system optionally containing nitrogen or sulphur and in a chain aromatic ring system optionally containing one or more chain oxygen or sulphur atoms, a triarylphosphine oxide or an arylsilane the rings of any of which are optionally substituted with C

Abstract: Electroluminescent devices are disclosed comprising a transparent anode; a layer of a hole transporting material; a layer of an electroluminescent material; a layer of an electron transporting material; a layer of a substituted lithium quinolate; and a metal cathode. The electroluminescent device may be an organic light-emitting diode having a cathode, an electron injection layer in contact with the cathode and an electron transport layer in contact with the electron injection layer and comprising aluminum, zirconium or hafnium quinolate or a mixture thereof or a mixture of any of them with a quinolate of a metal of group 1, 2, 3, 13 or 14 of the periodic table. Such devices may be made by the steps of forming a substituted lithium quinolate having one or more substituents and depositing the substituted lithium quinolate on a cathode of the device to provide an electron injection layer.

Abstract: The invention provides new compounds of the formula I, II or III. These compounds can be used as electron transport materials in optical light emitting diodes (OLEDs).

Abstract: In OLEDs, improved efficiency is obtained by compounds which can form inter alia electron injection layers of the formula (I) wherein R1 is a 1-5 ring aryl (including polycyclic), aralkyl or heteroaryl group which is optionally substituted with one or more C1-C4 alkyl, alkoxy or cyano; R2 and R3 together form a 1-5 ring aryl (including polycyclic), aralkyl or heteroaryl group which is optionally substituted with C1-C4 alkyl, alkoxy or cyano; R4 is hydrogen, C1-C4 alkyl or aryl; and Ar is monocyclic, bicyclic or tricyclic aryl or heteroaryl which is optionally substituted with one or more C1-C4-alkyl or alkoxy groups, or an oligomer thereof.

Abstract: In OLEDs, improved efficiency is obtained by compounds which can form inter alia electron injection layers of the formula (I) wherein R1 is a 1-5 ring aryl (including polycyclic), aralkyl or heteroaryl group which is optionally substituted with one or more C1-C4 alkyl, alkoxy or cyano; R2 and R3 together form a 1-5 ring aryl (including polycyclic), aralkyl or heteroaryl group which is optionally substituted with C1-C4 alkyl, alkoxy or cyano; R4 is hydrogen, C1-C4 alkyl or aryl; and Ar is monocyclic, bicyclic or tricyclic aryl or heteroaryl which is optionally substituted with one or more C1-C4-alkyl or alkoxy groups, or an oligomer thereof.

Abstract: In OLEDs, improved efficiency is obtained by using compounds of formula [Ar](CH?CH—R1)n wherein n is an integer from 1 to 4; [Ar] is a polycyclic aromatic or heteroaromatic scaffold optionally substituted with one or more alkyl or alkoxy groups; and R1 is a 5-membered heteroaryl group optionally substituted with methyl, methoxy, aryl or heteroaryl, or is phenyl or naphthyl optionally substituted with methyl, methoxy, trifluoromethyl or cyano or is biphenyl or substituted biphenyl. The compounds are believed to be novel and can be made by condensing a compound of formula wherein [Ar] and n are as defined above with a compound of formula [Ar](CH3)nR1CHO in the presence of an acid catalyst e.g. an anhydride of an organic acid.

Abstract: A compound of the formula R1(CR3?CR4)nAr(CR4?CR3)nR2 wherein: n is 0 or 1; Ar represents aryl or heteroaryl having 1-5 aromatic rings which may be chain or fused or a combination of chain and fused, which may be substituted with alkoxy, fluoro, fluoroalkyl or cyano and which in the case of a 5-membered ring nitrogen heteroatom may be N-substituted with aryl or substituted aryl optionally further substituted with alkoxy, fluoro, fluoroalkyl or cyano; R1 and R2 independently represent aryl or nitrogen, oxygen or sulphur-containing heteroaryl having two to four fused aromatic rings one of which may be 5-membered and optionally substituted by aryl or heteroaryl having 1-5 chain or fused aromatic rings which may be further substituted with alkoxy, fluoro, fluoroalkyl or cyano; and R3 and R4 independently represent hydrogen, methyl, ethyl or benzyl.

Abstract: In OLEDs, improved efficiency is obtained by compounds which can form inter alia electron injection layers of the formula (I) wherein R1 is a 1-5 ring aryl (including polycyclic), aralkyl or heteroaryl group which is optionally substituted with one or more C1-C4 alkyl, alkoxy or cyano; R2 and R3 together form a 1-5 ring aryl (including polycyclic), aralkyl or heteroaryl group which is optionally substituted with C1-C4 alkyl, alkoxy or cyano; R4 is hydrogen, C1-C4 alkyl or aryl; and Ar is monocyclic, bicyclic or tricyclic aryl or heteroaryl which is optionally substituted with one or more C1-C4-alkyl or alkoxy groups, or an oligomer thereof.

Abstract: The present invention relates to heteroleptic electroluminescent metal complexes and to their preparation and use in electroluminescent devices, particularly to electroluminescent compounds having the general chemical formula:

Abstract: Novel ruthenium, rhodium, palladium, osmium, iridium or platinum complexes of dibenzothiophene ligands are electroluminescent compounds.

Abstract: The invention provides new compounds of the formula I, II or III. These compounds can be used as electron transport materials in optical light emitting diodes (OLEDs).

Abstract: Electroluminescent devices have an electroluminescent layer incorporating iridium complexes with 2-benzo[b]thiophenyl and benzimidazole ligands such as bis[thiophen-2-yl-pyridine-C2,N?]-2-(2-pyridyl)-benzimidazole iridium.

Abstract: An electroluminescent composition is provided comprising: (a) a compound of the general chemical formula (I): wherein M is lithium, sodium, potassium, rubidium, caesium, beryllium, magnesium, calcium, strontium, barium, copper, silver, gold, zinc, boron, aluminum, gallium, indium, germanium, tin, antimony, lead, manganese, iron, ruthenium, osmium, cobalt, rhodium, iridium, nickel, palladium, platinum, cadmium or chromium; n is the valence of M; and R1, R2 and R3 can be the same or different, and are selected from hydrogen, a substituted or unsubstituted aliphatic group, a substituted or unsubstituted aromatic, heterocyclic or polycyclic ring structure, a fluorocarbon, a halogen or a nitrile group; and (b) a suitable dopant. The composition may be used in forming electroluminescent devices.

Abstract: A compound of the formula R1(CR3?CR4)nAr(CR4?CR3)nR2 wherein: n is 0 or 1; Ar represents aryl or heteroaryl having 1-5 aromatic rings which may be chain or fused or a combination of chain and fused, which may be substituted with alkoxy, fluoro, fluoroalkyl or cyano and which in the case of a 5-membered ring nitrogen heteroatom may be N-substituted with aryl or substituted aryl optionally further substituted with alkoxy, fluoro, fluoroalkyl or cyano; R1 and R2 independently represent aryl or nitrogen, oxygen or sulphur-containing heteroaryl having two to four fused aromatic rings one of which may be 5-membered and optionally substituted by aryl or heteroaryl having 1-5 chain or fused aromatic rings which may be further substituted with alkoxy, fluoro, fluoroalkyl or cyano; and R3 and R4 independently represent hydrogen, methyl, ethyl or benzyl.

Abstract: In OLEDs, improved efficiency is obtained by novel compounds which can form inter alia electron injection layers of the formula (I) wherein R1 is a 1-5 ring aryl (including polycyclic), aralkyl or heteroaryl group which is optionally substituted with one or more C1-C4 alkyl, alkoxy or cyano; R2 and R3 together form a 1-5 ring aryl (including polycyclic), aralkyl or heteroaryl group which is optionally substituted with C1-C4 alkyl, alkoxy or cyano; R4 is hydrogen, C1-C4 alkyl or aryl; and Ar is monocyclic, bicyclic or tricyclic aryl or heteroaryl which is optionally substituted with one or more C1-C4-alkyl or alkoxy groups, or an oligomer thereof.