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A kind of metal platinum (ii) complex containing double-bridged phenyl-phenyl-pyrazole structural unit and its application

A structural unit and double bridge technology, applied in the direction of platinum-based organic compounds, compounds containing elements of group 8/9/10/18 of the periodic table, platinum-group organic compounds, etc., can solve problems that have not been reported, and achieve Broad application prospects, increased conjugation, and reduced triplet energy levels

Active Publication Date: 2022-02-25
ZHEJIANG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although there have been many reports in the literature on bivalent cyclometallic platinum(II) metal complex phosphorescent materials, there have been no reports on metal platinum(II) complexes containing double-bridged phenyl-phenyl-pyrazole structural units.

Method used

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  • A kind of metal platinum (ii) complex containing double-bridged phenyl-phenyl-pyrazole structural unit and its application
  • A kind of metal platinum (ii) complex containing double-bridged phenyl-phenyl-pyrazole structural unit and its application
  • A kind of metal platinum (ii) complex containing double-bridged phenyl-phenyl-pyrazole structural unit and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0237] Embodiment 1: Platinum complex Pt3 can be synthesized according to the following route:

[0238]

[0239] Synthesis of borate intermediate 2: Add bisboronic acid pinacol ester (5.37 g, 23.3 mmol, 1.1 eq), [1,1'-bis( Diphenylphosphine) ferrocene] palladium dichloride dichloromethane complex (PdCl 2 (dppf).CH 2 Cl 2 ) (519.4 mg, 0.64 mmol, 0.03 eq), potassium acetate (6.30 g, 63.6 mmol, 3.0 eq). The nitrogen was purged three times, then 1-(3-methoxyphenyl)-4-bromopyrazole 1 (5.37 g, 21.2 mmol, 1.0 eq) dimethylsulfoxide (40 mL) was added. Then placed in an 80°C oil bath for 3 days. Cool to room temperature, add 80 mL of ethyl acetate to dilute, filter with suction, add 80 mL of water, separate liquid, extract the water phase with ethyl acetate three times, combine the organic phase, dry the organic phase with anhydrous sodium sulfate, filter, and distill off the solvent under reduced pressure. The obtained crude product was separated and purified by silica gel colu...

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Abstract

The invention provides a metal platinum (II) complex containing a double-bridged phenyl-phenyl-carbazole structural unit and an application thereof. The metal platinum(II) complex has a structure represented by general formula (I). The luminescent material provided by the present invention regulates the photophysical properties of the tetradentate ring metal platinum (II) complex by adjusting the structure of the ligand surrounding the metal center and the structure of the substituent on the ligand, and has high stability and The advantage of high efficiency; it has broad application prospects in many fields such as OLED display and lighting.

Description

【Technical field】 [0001] The invention relates to the technical field of organic light-emitting materials, in particular to a metal platinum (II) complex phosphorescence and delayed fluorescence or pure phosphorescence light-emitting material containing a double-bridged phenyl-phenyl-pyrazole structural unit and its application. 【Background technique】 [0002] Compounds capable of absorbing and / or emitting light are useful in a variety of optical and electroluminescent devices, including: light absorbing devices, solar and photosensitive devices, organic light emitting diodes (OLEDs), light emitting devices, or both Devices that absorb in turn enable light emission and as markers for biological applications. Much research has been devoted to the discovery and optimization of organic and organometallic materials for use in optical and electroluminescent devices. In general, research in this area aims to achieve a number of goals, including improvements in absorption and emis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/46H01L51/54
CPCC09K11/06C07F15/0086C09K2211/185H10K85/346H10K85/40H10K30/00H10K50/11Y02E10/549
Inventor 李贵杰娄微微黄达陈少海
Owner ZHEJIANG UNIV OF TECH