Synthesis and application of dinuclear ring metal platinum (II) complex near-infrared electrophosphorescent material containing different conjugated bridges

A technology of cyclometals and complexes, which is applied in the direction of luminescent materials, compounds containing elements of group 8/9/10/18 of the periodic table, platinum group organic compounds, etc. Weak effect, affecting luminous efficiency and other issues, to achieve the effect of enhancing external quantum efficiency, broadening energy level delocalization, and reducing non-radiative transition rate
CN107400147AInactive Publication Date: 2017-11-28CHANGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGZHOU UNIV
Publication Date
2017-11-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a dinuclear ring metal platinum (II) complex near-infrared electrophosphorescent material containing different conjugated bridges, and application of the electrophosphorescent material to an organic electroluminescent diode. The dinuclear ring metal platinum complex near-infrared electrophosphorescent material uses different conjugated rigid structures (benzene, 1,4-difluorobenzene, carbazole, fluorene and pyrene) as luminous kernel donor (D) units, and uses nitrogen-containing dentate conjugate ligands (isoquinoline, anthraquinoline and phenanthridine) as receptor (A) units for building the ring metal platinum complex near-infrared electrophosphorescent material using A-D-A structure as a main ligand, using 2,2,6,6-tetramethyl-3,5-heptadione as an auxiliary ligand and using platinum ions. The organic electrophosphorescent luminous device is prepared by using the near-infrared electrophosphorescent material as a luminous layer doping agent and using m-MTDATA:CBP as a body material. The device is a near-infrared electrophosphorescent luminous device with the maximum emitting peak being 709nm, the outer quantum efficiency being 3.97 percent and the maximum radiation degree being 2354nW.Sr<-1>.cm<-2>.
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Description

technical field

[0001] The invention relates to the field of near-infrared luminescent materials of cyclometal platinum (II) complexes, in particular to the synthesis and application of a class of binuclear cyclometal platinum (II) complex near-infrared electroluminescent materials containing different conjugated bridges. technical background

[0002] Since the near-infrared region involves applications in important fields such as data storage, security marking, photodynamic therapy, biological detection, and optical fiber communication, especially military applications such as infrared detection and infrared guidance, the light-emitting devices based on organic materials Wavelength advancement into the near-infrared region is both significant and technically challenging. In the exploration of near-infrared organic electroluminescent devices, finding and preparing organic materials with near-infrared luminescent activity is the cornerstone and the root [1-4] . At present, ...

Claims

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