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A Platinum Complex Containing Tetradentate Ligands and Aryloxy Derivatives

A technology of tetradentate ligand and aryloxy group is applied in the field of tetravalent metal platinum complex phosphorescent luminescent materials, which can solve the problems of poor stability and rare research reports on tetravalent cyclic metal platinum (IV) metal complex phosphorescent materials, etc. Achieve high stability, improve stability, quantum efficiency, and high efficiency

Inactive Publication Date: 2021-10-08
ZHEJIANG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Although there have been many reports on bivalent cyclometallic platinum(II) metal complex phosphorescent materials in the literature, there are very few reports on tetravalent cyclometallic platinum(IV) metal complex phosphorescent materials.
However, the central metal ion of the platinum (II) complex has an unsaturated 16-electron structure with uncoordinated 6p orbitals, and is easily affected by electron donors or electron-rich substances in the surrounding environment. It is stable as a phosphorescent material. poor sex

Method used

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  • A Platinum Complex Containing Tetradentate Ligands and Aryloxy Derivatives
  • A Platinum Complex Containing Tetradentate Ligands and Aryloxy Derivatives
  • A Platinum Complex Containing Tetradentate Ligands and Aryloxy Derivatives

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Experimental program
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Embodiment 1

[0172] Embodiment 1: the synthesis of tetravalent platinum complex Pt1:

[0173]

[0174] Synthesis of intermediate compound 1: Add 3,5-dimethyl-4-bromopyrazole (5250 mg, 30.00 mmol, 1.00 equivalents), cuprous iodide to a dry three-necked flask with a reflux condenser and a magnetic rotor in sequence (572mg, 3.00mmol, 0.10equivalent), L-proline (690mg, 6.00mmol, 0.20equivalent), potassium carbonate (8280mg, 60.00mmol, 2.00equivalent), nitrogen was replaced three times, and then m-iodoanisole (10500mg , 45.00mmol, 1.50eq) and redistilled dimethylsulfoxide (10mL). The reaction mixture was stirred at 120° C. for 2 days, and monitored by TLC until the reaction of the raw material 4-bromopyrazole was completed. Add water (100mL) to quench the reaction, filter, 50mL of ethyl acetate fully wash the insoluble matter, separate the organic phase in the mother liquor, dry over anhydrous sodium sulfate, filter, and distill off the solvent under reduced pressure. The obtained crude pr...

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Abstract

The invention relates to the technical field of organic luminescent materials, and provides a tetravalent metal platinum (IV) complex phosphorescent luminescent material containing tetradentate ligands and aryloxy derivatives. The tetravalent metal platinum (IV) has a structure represented by general formula (I). The luminescent material provided by the present invention regulates the photophysical properties of tetradentate ring metal platinum complexes by adjusting the structure of the tetradentate ligand and the aryloxy ligand surrounding the metal center and the structure of the substituent on the ligand, It has the advantages of high stability and 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 luminescent materials, in particular to a tetravalent metal platinum (IV) complex phosphorescent luminescent material containing tetradentate ligands and aryloxy derivatives and an application thereof. 【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 emission efficiency, and improvements in processing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/54H01L51/50
CPCC09K11/06C07F15/0086C09K2211/185H10K85/346H10K50/11
Inventor 李贵杰冯琦黄达陈少海佘远斌
Owner ZHEJIANG UNIV OF TECH