33results about How to "Increased film-forming" patented technology

The invention belongs to the field of organic semiconductor materials, and discloses a blue-light organic electrophosphorescence material, and a preparation method and application thereof. The material has the following structural formula, wherein R is a hydrogen atom, C1-C6 alkyl group or C1-C6 alkoxy group; X and Y are respectively Cl or F; and LK is an auxiliary ligand contained by an iridium metal complex. The blue-light organic electrophosphorescence material disclosed by the invention uses 2,3'-dipyridine as a major structure of the ring metal ligand, and the introduction of the alkyl and alkoxy groups can obtain satisfactory energy transfer efficiency and blue-light emitting wavelength and can a certain steric hindrance effect, thereby reducing the direct actions among metal atoms, reducing the self-quenching phenomenon of triplet-state excitons and greatly enhancing the light conversion efficiency of the material; and meanwhile, the F and Cl substitution on the ring metal ligand can improve the luminescence property, facilitate vapor deposition, improve the film-forming property, enhance the stability of the device and enhance the color purity.

The invention provides an organic electroluminescent material, a preparation method of the organic electroluminescent material and an organic electroluminescent device. The organic electroluminescent material has a general formula (P) as shown in the specification, wherein R1 is hydrogen atom, C1-20 linear alkyl, C1-20 branched alkyl, C1-20 linear alkoxy or C1-20 branched alkoxy. According to the organic electroluminescent material, 2-(2',4'-difluoro-3'-cyanophenyl) pyrimidine serving as a cyclometalated ligand and acetylacetone serving as an auxiliary ligand are adopted to synthesize a blue-light organic electroluminescent material iridium complex, and the illuminating color of the material is adjusted through chemical modification performed by introducing alkyl chain on the pyrimidine ring of the cyclometalated ligand, so that phosphorescence emission having blue emission wavelength and high luminescence efficiency can be obtained.

The invention relates to an organic electrophosphorescent material and a preparation method thereof and an organic light-emitting device. The organic electrophosphorescent material (P) has a structure (P) shown in the specification, wherein R is phenyl, fluorenyl or carbazolyl. According to the organic electrophosphorescent material, 2-(2',3',4'-trifluorophenyl)pyrimidine is taken as a cyclometalated ligand, and 2,4-di(trifluoromethyl)-5-(pyridine-2'-yl)pyrrole is taken as an auxiliary ligand to synthesize a blue-light organic electrophosphorescent material iridium metal ligand. Moreover, the adjustment of the light-emitting color of the material is realized through chemical modification of the phenyl, fluorenyl or carbazolyl introduced onto a pyrimidine ring of the cyclometalated ligand, thereby obtaining blue-light phosphorescence emission with high luminous efficiency.

The invention relates to a blue phosphorescence material iridium metal complex, its preparation method and an organic electroluminescent device. The blue phosphorescence iridium metal complex is characterized in that the structural formula of the blue phosphorescence iridium metal complex is as defined in the specification, wherein R is hydrogen or an alkyl group with carbon atom number being 1-20. By the use of the above blue phosphorescence iridium metal complex, electroluminescent performance of the organic electroluminescent device can be raised.

The invention provides an organic electroluminescent material, a preparation method of the organic electroluminescent material and an organic electroluminescent device. The organic electroluminescent material has a general formula (P) as shown in the specification, wherein R1 is hydrogen atom, C1-20 linear alkyl, C1-20 branched alkyl, C1-20 linear alkoxy or C1-20 branched alkoxy; and R2 is hydrogen atom or tertiary butyl. According to the organic electroluminescent material, 2-(2',6'-difluoropyridine-3'-yl) pyrimidine serving as a cyclometalated ligand and 3-trifluoromethyl-5-(pyridine-2'-yl)pyridine or 3-trifluoromethyl-5-(4'-tert-butylpyridine-2'-yl)pyridine serving as an auxiliary ligand are adopted to synthesize a blue-light organic electroluminescent material iridium heterotropic complex, and the illuminating color of the material is adjusted through chemical modification performed by introducing alkyl or alkoxy chain on the pyrimidine ring of the cyclometalated ligand, so that phosphorescence emission having high luminescence efficiency can be obtained.

The invention provides an organic electroluminescent material, a preparation method of the organic electroluminescent material and an organic electroluminescent device. The organic electroluminescent material has a general formula (P) as shown in the specification, wherein R1 is hydrogen atom, C1-20 linear alkyl, C1-20 branched alkyl, C1-20 linear alkoxy or C1-20 branched alkoxy. According to the organic electroluminescent material, 2-(2',6'-difluoro-3'-yl) pyrimidine serving as a cyclometalated ligand and acetylacetone serving as an auxiliary ligand are adopted to synthesize a blue-light organic electroluminescent material iridium heterotropic complex, and the illuminating color of the material is adjusted through chemical modification performed by introducing alkyl or alkoxy chain on the pyrimidine ring of the cyclometalated ligand, so that phosphorescence emission having high luminescence efficiency can be obtained.

The invention provides an organic blue light electrophosphorescent metal iridium complex, a preparation method thereof and an organic electroluminescent device. The organic blue light electrophosphorescent metal iridium complex has the structural general formula as shown in the specification, wherein r is a hydrogen atom, c1-c20 alkyl or c1-c20 alkoxy. The organic blue light electrophosphorescent metal iridium complex is synthesized by taking 2-(3', 5'-difluoro-4'-trifluoromethylphenyl)pyridine as a cyclometalated ligand and 3-trifluoromethyl-5-(2'-pyridyl)-1, 2, 4-triazole as an auxiliary ligand, and the color of light emitted by the organic blue light electrophosphorescent metal iridium complex is regulated through chemical modification on an alkyl chain or an alkoxy chain introduced to a pyrimidine ring of the cyclometalated ligand, so that blue light with high color purity is obtained.

The invention provides an organic electroluminescent material, a preparation method of the organic electroluminescent material and an organic electroluminescent device. The organic electroluminescent material has a general formula (P) as shown in the specification, wherein R1 is hydrogen atom, C1-20 linear alkyl, C1-20 branched alkyl, C1-20 linear alkoxy or C1-20 branched alkoxy. According to the organic electroluminescent material, 2-(4',6'-difluoro-5'-trifluoromethylphenyl) pyrimidine serving as a cyclometalated ligand and acetylacetone serving as auxiliary ligand are adopted to synthesize a blue-light organic electroluminescent material iridium heterotropic complex, and the illuminating color of the material is adjusted through chemical modification performed by introducing alkyl or alkoxy chain on the pyrimidine ring of the cyclometalated ligand, so that phosphorescence emission having high luminescence efficiency can be obtained.

The invention relates to blue phosphorescence iridium complexes, a preparing method thereof and an organic electroluminescent device. The blue phosphorescence iridium complexes are characterized in that: the structure formula of the complexes is shown in the specification, wherein R is alkoxy of C1-C20. The blue phosphorescence iridium complexes can improve electroluminescent properties of the organic electroluminescent device.

The invention relates to an organic electro-phosphorescent material and a preparation method thereof, and an organic electroluminescent device. The organic electro-phosphorescent material (P) has a following structure, wherein R is H or Cx-C20 straight-chain or branched-chain alkyl. According to the organic electro-phosphorescent material, a blue-light organic electro-phosphorescent material iridium metal complex is synthesized with 2-(2',3',4'-trifluorophenyl)pyrimidine as a cyclo-metal ligand and with 2,4-bis(trifluoromethyl)-5-(pyridin-2'-yl)pyrrole as a subsidiary ligand. The adjustment upon material luminescent colors is realized through introducing alkyl chain chemical modification to the pyrimidine ring of the cyclo-metal ligand, such that high-luminous-efficiency blue phosphorescent emission is obtained.

The invention relates to an organic electro-phosphorescent material and a preparation method thereof, and an organic electroluminescent device. The organic electro-phosphorescent material (P) has a following structure, wherein R is H or C1-C20 straight-chain or branched-chain alkyl. According to the organic electro-phosphorescent material, a blue-light organic electro-phosphorescent material iridium metal complex is synthesized with 2-(2',3',4'-trifluorophenyl)pyrimidine as a cyclo-metal ligand and with 5-(2'-pyridyl)-1,2,3,4-tetrazole as a subsidiary ligand. The adjustment upon material luminescent colors is realized through introducing alkyl chain chemical modification to the pyrimidine ring of the cyclo-metal ligand, such that high-luminous-efficiency blue phosphorescent emission is obtained.

The invention discloses an organic blue light electrophosphorescent material with the structural formula as shown in the figure p, wherein r is a hydrogen atom, c1-c20 alkyl or c1-c20 alkoxy. The organic blue light electrophosphorescent material disclosed by the invention is an iso-coordinated metal iridium complex synthesized by taking 2-(4', 6'-difluoro-5'-trifluoromethylphenyl)pyridine as a cyclometalated ligand, and the color of light emitted by the organic blue light electrophosphorescent material is regulated through chemical modification on an alkyl chain or an alkoxy chain introduced to a pyrimidine ring of the cyclometalated ligand, so that phosphorescent emission of blue light with higher color purity is realized. The invention also provides a preparation method of the organic blue light electrophosphorescent material and an organic electroluminescent device made of the organic blue light electrophosphorescent material.

The invention discloses a blue light organic electrophosphorescent material iridium metal complex, a preparation method thereof, and an organic electroluminescent device. A structural general formula of the material is shown in the description. In the structural general formula, R represents alkoxy of C1-C20. The blue light organic electrophosphorescent material iridium metal complex is synthesized by using 2-(2',6'-difluoropyridine-3'-yl)pyrimidine as cyclometalated ligands and 3-trifluoromethyl-5-(2'-pyridyl)-1,2,4-triazole as auxiliary ligands. Regulation of luminescent colors of the material is realized through chemical modification by introducing alkoxy chains on pyrimidine rings of the cyclometalated ligands, and thus phosphorescence emission with wavelengths nearer to that of blue light can be obtained.

The invention discloses a blue light organic electrophosphorescent material iridium metal complex, a preparation method thereof, and an organic electroluminescent device. A structural general formula of the material is shown in the description. In the structural general formula, R represents alkoxy of C1-C20. The blue light organic electrophosphorescent material iridium metal complex is synthesized by using 2-(2',6'-difluoropyridine-3'-yl)pyrimidine as cyclometalated ligands and tetra(1-pyrazolyl)borate as auxiliary ligands. Regulation of luminescent colors of the material is realized through chemical modification by introducing alkoxy chains on pyrimidine rings of the cyclometalated ligands, and thus phosphorescence emission with wavelengths nearer to that of blue light can be obtained.

The invention discloses an organic blue light electrophosphorescent material with the structural formula as shown in the figure p, wherein r is a hydrogen atom, c1-c20 alkyl or c1-c20 alkoxy. The organic blue light electrophosphorescent material disclosed by the invention is synthesized by taking 2-(3', 5'-difluoro-4'-trifluoromethylphenyl)pyridine as a main structure of a cyclometalated ligand and 2-(pyridyl-2'-yl)imidazole as an auxiliary ligand, and the color of light emitted by the organic blue light electrophosphorescent material is regulated through chemical modification on an alkyl chain or an alkoxy chain introduced to a pyrimidine ring of the cyclometalated ligand, so that phosphorescent emission of blue light with higher color purity is realized. The invention also provides a preparation method of the organic blue light electrophosphorescent material and an organic electroluminescent device made of the organic blue light electrophosphorescent material.