40results about How to "Easy Sublimation Purification" patented technology

The invention relates to a class of iridium complexes which have novel main ligands and uses tetrakis(4-trifluoromethyl-3-pyridyl)phosphonimides or tetrakis(4-trifluoromethyl-3,5-pyrimidinyl)phosphonimides as auxiliary ligands. The main ligands in the molecule of this class of iridium complexes is any one selected from 2-(4,6-bis-trifluoromethylpyridine-3-)quinoline, 2-(4,6- bis-tribenzymethylpyridine-4-)quinoline, 2-(4,6-bis-trifluoromethylpyridine-3-)isoquinoline, 2-(4,6-bis-tribenzymethylpyridine-4-)isoquinoline, 2-(4,6-(bis-trifluoromethylpyridine-3-)quinazoline, 2-(4,6-bis-tribenzymethylpyridine-4-)quinazoline, 2-(4,6-bis-tribenzymethylpyridine-3-)phthalazie and 2-(4,6-bis-tribenzymethylpyridine-4-)phthalazine derivatives. Not only the novel iridium complexes have the advantages of being high in luminous efficiency, stable in chemical properties, easy to sublimate and purify and the like, but also the electroluminescent devices using the iridium complexes are excellent in the performance. By modifying the molecular structure of the ligands, it is possible to adjust the luminous intensity and efficiency of the complexes in the red wavelength range, and the design and production of both organic electroluminescent displays and illumination light sources are facilitated.

The invention relates to one type of iridium complex, a preparation method of the iridium complex and an organic electroluminescence device using the iridium complex. The series of iridium complex molecule comprises two benzene dipyridine derivatives serving as main ligands and auxiliary ligands containing nitrogen heterocycle phosphoric acid structures. Compared with the iridium complex which has been widely researched and reported, the type of novel iridium complex covered by the invention has the advantages of high light emitting efficiency, stable chemical property and high possibility of sublimation and purification; meanwhile, due to the introduction of strong electron phosphoric acid ligand structures, the light emitting color of the complex can be effectively regulated; by modifying the molecule structures of the main ligands and the auxiliary ligands, the light emitting position of the complex in the blue light wavelength range can be adjusted, so that the convenience is brought to design and production of organic electroluminescence displays and lighting sources; meanwhile, the series of novel iridium complex introduced by the invention is simple in synthesis method, high in yield and flexible in chemical modification on the main ligands and the auxiliary ligands.

The invention relates to iridium complexes and a preparation method thereof, and an electroluminescent device using the iridium complexes, particularly iridium complexes using 2-(5-(3-pyridyl-1,3,4-oxadiazolyl-2-)phenols as auxiliary ligands. The main ligands in the iridium complex molecules are 2-(4,6-ditrifluoromethylpyridyl)pyridine, 2-(4,6-ditrifluoromethylpyridyl)pyrimidine, 2-(4,6-ditrifluoromethylpyridyl)pyrazine and 2-(4,6-ditrifluoromethylpyridyl)triazine derivatives. The novel iridium complexes provided by the invention have the advantages of high luminescence efficiency, high electron mobility, stable chemical properties, easy sublimation and purification and the like; and the device has favorable properties. The molecular structure of the modifying main ligands can regulate the luminescent intensity and efficiency of the complexes within the green light wavelength range, thereby facilitating the design and production of the organic electroluminescent displays and illuminating light sources.

The invention relates to an iridium complex having a novel main ligand and regarding 4 (3, 5-pyrimidyl) phosphine imide as an auxiliary ligand.The main ligand of the series of iridium complex molecules is any one of 2-(4, 6-bistrifluoromethyl pyridine-3-) base pyridine, 2-(4, 6-bistrifluoromethyl pyridine-4-) base pyridine, 2-(4, 6-bistrifluoromethyl pyridine-3-) base pyrimidine, 2-(4, 6-bistrifluoromethyl pyridine-4-) base pyrimidine, 2-(4, 6-bistrifluoromethyl pyridine-3-) base pyrimidine pyrazine, 2-(4, 6-bistrifluoromethyl pyridine-4-) base pyrazine, 2-(4, 6-bistrifluoromethyl pyridine-3-) base triazine and a derivative of a 2-(4, 6-bistrifluoromethyl pyridine-4-) base triazine.The novel iridium complex has the advantages of being high in light emitting efficiency, high in electronic mobility, stable in chemical property, prone to sublimation and purification and the like and is excellent in device performance.

The invention relates to an iridium complex having novel main ligands and regarding 4 (4- trifluoromethyl phenyl) phosphine imide as an auxiliary ligand.The main ligands of the series of iridium complex molecules are 2-(4, 6-bistrifluoromethyl pyridine-3-) base pyridine, 2-(4, 6-bistrifluoromethyl pyridine-4-) base pyridine, 2-(4, 6-bistrifluoromethyl pyridine-3-) base pyrimidine, 2-(4, 6-bistrifluoromethyl pyridine-4-) base pyrimidine, 2-(4, 6-bistrifluoromethyl pyridine-3-) base pyrazine, 2-(4, 6-bistrifluoromethyl pyridine-4-) base pyrazine, 2-(4, 6-bistrifluoromethyl pyridine-3-) base triazine and a derivative of a 2-(4, 6-bistrifluoromethyl pyridine-4-) base triazine.According to the novel iridium complex, the molecular structures of the main ligands are modified, light emitting strength and efficiency of the complex can be adjusted within the green light wavelength range, and convenience is provided for design and production of an organic electroluminescent display and a lighting light source; meanwhile, a series of novel iridium complexes are simple in synthesis method, high in yield and flexible in chemical modification of the ligands.

The invention relates to a novel iridium complex with a nitrogen heterocyclic ring as the main ligand and a dithioaromatic / aromatic heterocyclic phosphoric acid compound as an auxiliary ligand. The nitrogen heterocycle and phosphorus-sulfur group in the iridium complex molecule help to improve the electron mobility of the material and regulate the luminous color, thereby balancing the injection and transport of holes and electrons, broadening the recombination area of ​​carriers, and improving device efficiency. , reducing efficiency roll-off. The iridium complex of the invention has the advantages of simple synthesis, stable chemical properties, easy sublimation and purification, and excellent device performance, which provides convenience for obtaining high-efficiency organic electroluminescent devices and their applications in the fields of lighting and display.

The invention relates to an iridium complex, wherein the iridium complex has a novel main ligand, and 2-(5- phenyl-1, 3, 4- oxadiazole-2-) phenol serves as an auxiliary ligand; main ligands in the series of iridium complex molecules include 2-(4, 6- bis(trifluoromethyl) pyridine-3-) base pyridine, 2-(4, 6-bis(trifluoromethyl) pyridine-4-) base pyridine, 2-(4, 6- bis(trifluoromethyl) pyridine-3-) base pyrimidine, 2-(4, 6-bis(trifluoromethyl) pyridine-4-) base pyrimidine, 2-(4, 6- bis(trifluoromethyl) pyridine-3-) base pyrazine, 2-(4, 6-bis(trifluoromethyl) pyridine-4-) base pyrazine, 2-(4, 6- bis(trifluoromethyl) pyridine-3-) base triazine and a 2-(4, 6-bis(trifluoromethyl) pyridine-4-) base triazine derivative.The novel iridium complex has the advantages of being high in light-emitting efficiency, high in electronic mobility, stable in chemical property, prone to sublimation and purification and the like and is excellent in device performance.

The invention relates to an iridium complex and a preparation method thereof, and an organic electroluminescent device using the iridium complex. Molecules of the serial iridium complex include two phenyl-linked pyridine derivatives as a main ligand and an auxiliary ligand containing azo-heterocyclic phosphate structure. Compared with iridium complexes already widely researched and reported, the novel iridium complex covered herein has the advantages such as high luminescent efficiency, chemical property stability and ease of sublimation purification; as intense electronic phosphate coordination structure is introduced, light color of the complex can be effectively controlled. By modifying molecular structures of the main ligand and auxiliary ligand, it is possible to regulate luminescent position of the complex in a blue ray wavelength range, and this facilitates the design and production of organic electroluminescent displays and lighting sources. Meanwhile, the serial novel iridium complex described herein is simple to synthesize, high in yield and is flexible in chemical modification for the main ligand and auxiliary ligand.

The invention discloses a novel metal complex, an organic electroluminescent device and an organic electroluminescent material containing the metal complex. The molecular formula of the metal complex of the present invention is: M (L A ) m‑n (L C ) n , wherein, M is the metal element Ir; m is the oxidation valence state of metal M, n is an integer greater than 1 and n is less than m; the metal complex electroluminescence device proposed by the present invention emits red light, has high external quantum efficiency, and at the same time The thermal stability of the material is good, the service life of the device is improved, and the material is easy to prepare and purify, so it is an ideal choice as a light-emitting material of an organic electroluminescent device.