Phosphorescence aggregation-induced emission material of platinum (II) complex containing nitrogen monodentate ligand and C^N bidentate ligand

A technology of monodentate ligands and bidentate ligands, applied in the direction of luminescent materials, platinum-group organic compounds, platinum-based organic compounds, etc., can solve problems such as the gap in electroluminescent efficiency and achieve important application value effects

Active Publication Date: 2020-06-05
山西绿普光电新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there are few studies on phosphorescent AIE luminescent materials, and there is still a significant gap between the electroluminescent efficiency and traditional phosphorescent materials.

Method used

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  • Phosphorescence aggregation-induced emission material of platinum (II) complex containing nitrogen monodentate ligand and C^N bidentate ligand
  • Phosphorescence aggregation-induced emission material of platinum (II) complex containing nitrogen monodentate ligand and C^N bidentate ligand
  • Phosphorescence aggregation-induced emission material of platinum (II) complex containing nitrogen monodentate ligand and C^N bidentate ligand

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Phosphorescence aggregation-induced luminescent material Pt1 of the platinum (II) complex of the nitrogen-containing monodentate ligand and the C^N bidentate ligand of the present embodiment, the chemical formula is C 20 h 15 ClN 2 Pt, the molecular structure formula is:

[0025]

[0026] refer to figure 1 , the synthesis steps are as follows:

[0027] The first step: 0.2g organic ligand with 0.39g K 2 PtCl 4 Put it into the reaction container, add 24mL of a mixed solvent of ethylene glycol ether and water in a nitrogen atmosphere, the volume ratio of ethylene glycol ether and water in the mixed solvent is 3:1, heat to 85°C in a nitrogen atmosphere, and stir for 8 hours Cool to room temperature, add 50mL deionized water to the reaction tube to precipitate solids, filter, take the filter cake and dry to obtain the intermediate product;

[0028] The second step: put the intermediate product and 0.07g of pyridine into the reaction tube, add 15mL of chloroform un...

Embodiment 2

[0032] The phosphorescent aggregation-induced luminescent material Pt2 of the platinum (II) complex of nitrogen-containing monodentate ligand and C^N bidentate ligand of the present embodiment, chemical formula is C 32 h 23 ClN 2 Pt, the molecular structure formula is:

[0033]

[0034] refer to figure 2 , the synthesis steps are as follows:

[0035] The first step: 0.2g organic ligand with 0.39g K 2 PtCl 4 Put it into the reaction container, add 24mL of a mixed solvent of ethylene glycol ether and water in a nitrogen atmosphere, the volume ratio of ethylene glycol ether and water in the mixed solvent is 3:1, heat to 85°C in a nitrogen atmosphere, and stir for 8 hours Cool to room temperature, add 50mL deionized water to the reaction tube to precipitate solids, filter, take the filter cake and dry to obtain the intermediate product;

[0036] The second step: the intermediate product and Put 0.2g into the reaction tube, add 20mL chloroform under nitrogen atmospher...

Embodiment 3

[0040]Phosphorescence aggregation-induced luminescent material Pt3 of the platinum (II) complex of nitrogen-containing monodentate ligand and C^N bidentate ligand of the present embodiment, chemical formula is C 45 h 36 ClN 3 Pt, the molecular structure formula is:

[0041]

[0042] refer to image 3 , the synthesis steps are as follows:

[0043] The first step: 0.2g organic ligand with 0.31g K 2 PtCl 4 Put it into the reaction container, add 24mL of a mixed solvent of ethylene glycol ether and water in a nitrogen atmosphere, the volume ratio of ethylene glycol ether and water in the mixed solvent is 3:1, heat to 85°C in a nitrogen atmosphere, and stir for 8 hours Cool to room temperature, add 50mL deionized water to the reaction tube to precipitate solids, filter, take the filter cake and dry to obtain the intermediate product;

[0044] The second step: the intermediate product and Put 0.23g into the reaction tube, add 20mL chloroform under nitrogen atmosphere, h...

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Abstract

The invention discloses a phosphorescence aggregation-induced emission material of a platinum (II) complex containing a nitrogen monodentate ligand and a C^N bidentate ligand. According to the invention, a planar platinum (II) complex is used as a framework to design and synthesize a Pt (C^N)NCl type phosphorescent AIE molecule, C^N is a 2-phenylpyridine bidentate ligand, N is a nitrogen-containing monodentate ligand, and Cl is a chlorine monodentate ligand. On the basis, the phosphorescence AIE behavior is regulated and controlled by regulating and controlling the sizes of a C^N bidentate ligand and a nitrogen-containing monodentate ligand, and the new phosphorescence AIE characteristic is realized by utilizing the conversion blocking of a tetrahedral framework from a ground state plane coordination framework to an excited state in an aggregation state, besides, through the intermolecular action, the rotation of groups on the ligand is hindered, and the nonradiative attenuation of theexcited state of the phosphorescent complex can also be inhibited to increase the aggregation-state light-emitting capacity, so that the realization of the AIE property is achieved, and the functional modification is performed on the two ligands, so that the space for regulating and controlling the AIE performance of the platinum (II) complex is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of organometallic complex luminescent materials, in particular to phosphorescent aggregation-induced luminescent materials based on platinum (II) complexes of nitrogen-containing monodentate ligands and C^N bidentate ligands of different sizes. Background technique [0002] In 2001, Tang Benzhong and others discovered the aggregation-induced emission (AIE) phenomenon of organic molecules. This kind of organic luminescent molecules exhibits enhanced luminescence characteristics in the solid state, which largely solves the problem of luminescent aggregation quenching that plagues luminescent molecules. Organic light-emitting diode devices require organic light-emitting molecules to have strong light-emitting properties in the solid state. Therefore, aggregation-induced light-emitting organic molecules show great advantages in OLEDs. However, most of the organic light-emitting molecules are fluorescent materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06
CPCC07F15/0086C09K11/06C09K2211/1007C09K2211/1011C09K2211/1029C09K2211/185
Inventor 周桂江杨华杨晓龙
Owner 山西绿普光电新材料科技有限公司
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