Abstract: Novel ruthenium, rhodium, palladium, osmium, iridium or platinum complexes of thianthrene ligands are electroluminescent compounds. According to the invention there is provided complexes of Formula (I).

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: An improved method for making a zirconium 2-methyl 8 hydroxy quinolate is a two-stage process of reacting a zirconium salt with 2-methyl 8 hydroxy quinoline and then reacting the mixed salt formed with a beta diketone.

Abstract: An electroluminescent composition comprises a dopant which is an aromatic substituted anthracene compound mixed with a host material.

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

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) lithium quinolate or substituted quinolate exhibiting a blue electroluminescence and being the result of reaction between a lithium alkyl or alkoxide with 8-hydroxy quinoline or a substituted derivative thereof in a solvent which comprises acetonitrile and (b) a dopant. Also provided is an electroluminescent device which comprises sequentially (i) a first electrode (ii) a layer of an electroluminescent material which comprises lithium quinolate or substituted quinolate doped with a dopant and (iii) a second electrode.

Abstract: An electroluminescent device in which there is an electroluminescent which comprises a complex of general formula (L?)nM1M2 or of general formula (L?)n M1M2 (Lp), where Lp is a neutral ligand and where M1 is a rare earth, transition metal, lanthamide or an actimide, M2 is a non rare earth metal, L?is an organic complex and n is the combined valence state of M1 and M2.

Abstract: An electroluminescent material is a metal complex, preferably aluminium, of a substituted pyrazol-5-one.

Abstract: A novel electroluminescent compound which emits blue or blueish purple light is a complex of a lanthanide or actinide and an organic complex e.g. mono(bathophenanthroline) thoriumIV chloride or mono(tripyridyl)yttrium chloride.

Abstract: Novel boron complexes are blue emissive electroluminescent compounds.

Abstract: An electroluminescent compound is an organic diiridium acatylacetonate complex.

Abstract: An improved electroluminescent device has a layer of a first electroluminescent metal complex or organo metallic complex and a layer of a second metal complex or organo metallic complex in which the band gap of the metal in the second electroluminescent metal complex or organo metallic complex is larger than the band gap of the metal in the first electroluminescent metal complex or organo metallic complex.

Abstract: An electroluminescent compound is a organometallic complex in which the metal is titanium, zirconium, hafnium, vanadium, niobium or tantulum.

Abstract: According to the invention there is provided an electroluminescent device comprising in sequence, an anode a layer of an electroluminescent material of general formula L(?)aM where M is a rare earth, lanthanide or an actinide, L? is a organic complex and n is the valence state of M and a cathode, in which the layer of an electroluminescent material includes a fluorescent dye.

Abstract: An electroluminescent material is a metal complex of 1-phenyl-3-methyl-4-trimethylacetyl-pyrazol-5-one of formula (I). An electroluminescent device comprising the compound of formula (I) in the luminescent layer is also part of the invention.

Abstract: Lithium quinolate is an electroluminescent material which emits light in the blue region of the spectrum.

Abstract: An electroluminescent material is a metal complex, preferably aluminium, of a substituted pyrazol-5-one.

Abstract: An electroluminescent device has a doped lithium quinolate as the compound forming the electroluminescent material.

Abstract: A method for forming an electroluminescent device deposits the electroluminescent material by ink jet printing.