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Coordination compound phosphorescent material based on electron-deficient functional group

A technology of functional groups and phosphorescent light-emitting materials, applied in the field of complex phosphorescent materials, can solve the problem of not paying much attention to the excited state of higher energy level, and achieve optimized carrier injection and transport properties, excellent display effect, and enhanced electroluminescence. effect of ability

Active Publication Date: 2021-07-13
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, little attention has been paid to the higher-level excited states

Method used

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  • Coordination compound phosphorescent material based on electron-deficient functional group
  • Coordination compound phosphorescent material based on electron-deficient functional group
  • Coordination compound phosphorescent material based on electron-deficient functional group

Examples

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Embodiment 1

[0034] The structural formula of ligand L-1 based on the electron-deficient functional group of this embodiment is refer to figure 1 , its synthesis method is: 1 equivalent electron-deficient functional group compound and 1 equivalent of the tetradentate precursor Put into reaction vessel, under nitrogen atmosphere, add 0.05% equivalent tetrakis(triphenylphosphine palladium) catalyst, 50 milliliters of tetrahydrofuran and 30 milliliters of concentrations in said reaction vessel and be the potassium carbonate solution of 2mol / L, under nitrogen atmosphere Heat to 110° C. to react overnight; stop heating, cool to room temperature, add deionized water to the reaction mixture solution, and extract the reaction mixture with dichloromethane. The obtained organic phase was dried with anhydrous sodium sulfate, concentrated, and separated and purified on a silica gel column to obtain the corresponding ligand L-1 based on an electron-deficient functional group. The NMR characteriza...

Embodiment 2

[0037] The structural formula of ligand L-2 based on the electron-deficient functional group of this embodiment is refer to figure 1 , its synthesis method is: 1 equivalent electron-deficient functional group compound and 1 equivalent of the tetradentate precursor Put into the reaction vessel, under nitrogen atmosphere, add 0.05% equivalent tetrakis(triphenylphosphine palladium) catalyst, 50 milliliters of tetrahydrofuran and 30 milliliters of concentration in the reaction vessel and be the potassium carbonate solution of 2mol / L, under nitrogen atmosphere Heat to 110°C to react overnight; stop heating, add deionized water to the reaction mixture solution after cooling to room temperature, and extract the reaction mixture with dichloromethane; the obtained organic phase is dried with anhydrous sodium sulfate, concentrated, and separated and purified by silica gel column, namely The corresponding ligand L-2 based on electron-deficient functional groups can be obtained. The...

Embodiment 3

[0040] The structural formula of ligand L-3 based on the electron-deficient functional group of this embodiment is refer to figure 1 , its synthesis method is: 1 equivalent electron-deficient functional group compound and 1 equivalent of the tetradentate precursor Put into reaction vessel, under nitrogen atmosphere, add 0.05% equivalent tetrakis(triphenylphosphine palladium) catalyst, 50 milliliters of tetrahydrofuran and 30 milliliters of concentrations in said reaction vessel and be the potassium carbonate solution of 2mol / L, under nitrogen atmosphere Heat to 110°C and react overnight; stop heating, add deionized water to the reaction mixture solution after cooling to room temperature, and extract the reaction mixture with dichloromethane; the obtained organic phase is dried with anhydrous sodium sulfate, concentrated, and separated and purified by silica gel column, namely The corresponding ligand L-3 based on electron-deficient functional groups can be obtained. The ...

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Abstract

The invention provides a coordination compound phosphorescent material based on an electron-deficient functional group, wherein the general formula of the molecular skeleton of the coordination compound phosphorescent material based on the electron-deficient functional group is shown in the specification, R is an electron-deficient substituent, and a group defined in the specification represents an organic nitrogen heterocyclic ring. According to the invention, an electron-deficient functional group is introduced to regulate and control the position of a high-energy-level excited state, so that the coupling effect between the high-energy-level excited state and the lowest excited state is promoted so as to enhance the light-emitting capacity; and the maximum luminous efficiency of the obtained luminescent material in a main body reaches 96%, so that the luminescent material has potential application value in the fields of high-performance electroluminescence, photocatalysis, cell imaging, chemical and biological detection and the like.

Description

technical field [0001] The invention relates to the technical field of organic luminescence, in particular to a complex phosphorescent material based on an electron-deficient functional group. Background technique [0002] Organometallic platinum complex phosphorescent materials have great application value in the fields of solar cells, organic synthesis catalysis, photocatalysis for water splitting, cell detection, targeted cancer therapy, and organic light-emitting diodes. The light-absorbing ability and luminescent ability of the complex are one of the most important parameters to determine its application value; at the same time, the redox ability of the complex has an important impact on the carrier transport properties. The above properties are the control points that are of great concern in the current research. The usual methods include changing the number of ring metal ligand teeth, such as changing from bidentate ligands to tridentate or tetradentate ligands, and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/54
CPCC07F15/0086C09K11/06C09K2211/185H10K85/346
Inventor 孙源慧杨晓龙周桂江
Owner XI AN JIAOTONG UNIV
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