Iridium complex phosphor material taking phthalazine derivative as ligand and preparation method thereof

A technology for iridium complexes and phosphorescent materials, applied in the field of iridium complex phosphorescent materials and their preparation, can solve the problems of reducing the luminous efficiency of devices, and achieve the effects of reducing self-quenching phenomenon, improving solubility, and reducing direct effects
CN102180909AInactive Publication Date: 2011-09-14NANJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING UNIV OF POSTS & TELECOMM
Publication Date
2011-09-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an iridium complex phosphor material taking a phthalazine derivative as a ligand. The structure of the material is shown as formulas (I) and (II), wherein Ar represents aryl, substituted aryl, heterocycle aryl and substituted heterocycle aryl; R can be one of a halogen atom, alkyl, substituted alkyl, alkoxyl, aryloxy, an alkylthio group, arylthio, aromatic amino, aliphatic amino or a heterocyclic substituent; L^Y can be one of N-COOH, 8-hydroxyquinoline, beta-diketone, N^NH and the like; N^N can be bipyridyl, diquinoline, 1,10-phenanthroline, a derivative of the 1,10-phenanthroline and the like; and Z can be hexafluorophosphate and perchlorate. A dicyclic or ionic iridium complex phosphorescent electroluminescent device taking the phthalazine derivative as the ligand obtained with the preparation method has high internal and external quantum yields, high luminance and high stability. A dicyclic iridium complex is shown as a formula (I), i.e., (C^N)2Ir(L^Y); and an ionic iridium complex is shown as a formula (II), i.e., (C^N)2Ir(N^N)<+>Z<->.
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Description

technical field

[0001] The invention relates to a class of luminescent materials, in particular to a class of iridium complex phosphorescent materials with phthalazine derivatives as ligands and a preparation method thereof Background technique

[0002] Organic electroluminescent devices have the advantages of low driving voltage, fast response speed, wide viewing angle range, and can change the luminous performance through fine-tuning of chemical structure to make rich colors, easy to achieve high resolution, light weight, and large-area flat-panel display. 21st Century Flat Panel Display Technology" has become a research hotspot in the fields of materials, information, physics and flat panel display. Among them, electrophosphorescent materials mainly based on heavy metal complexes are the most active in the current organic electroluminescence research. have d 6 and d 8 Heavy metal atoms such as platinum (Pt), iridium (Ir), and osmium (Os) in the electronic structure, du...

Claims

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