Triligand synergistic enhanced aggregation-induced luminescent organometallic platinum complex luminescent material

An aggregation-induced luminescence, organometallic technology, applied in the fields of luminescent materials, platinum group organic compounds, platinum group organic compounds, etc., can solve the problems of complex and difficult synthesis of phosphorescent materials, scarcity and other problems, and achieve rich variety and quantity, large scalability , the effect of improving the luminous efficiency

Active Publication Date: 2019-03-22
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, the synthesis of phosphorescent materials with aggregation-induced luminescent properties is complex and difficult, and the quantity is very rare

Method used

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  • Triligand synergistic enhanced aggregation-induced luminescent organometallic platinum complex luminescent material
  • Triligand synergistic enhanced aggregation-induced luminescent organometallic platinum complex luminescent material
  • Triligand synergistic enhanced aggregation-induced luminescent organometallic platinum complex luminescent material

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Experimental program
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Effect test

Embodiment 1

[0046] The organometallic platinum complex phosphorescent material Pt1 of this embodiment has a chemical formula of C 26 h 23 N 3 Pt, the structural formula is Refer to attached figure 1 , its synthesis method is:

[0047] 1.0mmol complex precursor With 1.0mmol organic monodentate ligand and 0.1 mmol of cuprous iodide, 30.0 mmol of triethylamine were put into a reaction vessel, 15 mL of methanol was added in a nitrogen atmosphere, heated to 50° C. and stirred for 8 hours, then cooled to room temperature to form a precipitate. The precipitate was obtained by suction filtration, and washed several times with deionized water, methanol and methyl tert-butyl ether. After drying the solvent, a high-purity organometallic platinum complex phosphorescent material Pt1 can be obtained with a yield of 82.2%.

[0048] Its NMR characterization data are: 1 H NMR (400MHz, CDCl 3 ,δ):9.95(d,J=5.6Hz,1H),8.56(d,J=7.2Hz,2H),7.78(t,J=7.2Hz,1H),7.65(d,J=8.0Hz,1H ), 7.55(d, J=7.6Hz, 1H)...

Embodiment 2

[0051] The organometallic platinum complex phosphorescent material Pt2 of the present embodiment has a chemical formula of C 36 h 27 N 3 Pt, the structural formula is Refer to attached figure 2 , its synthesis method is:

[0052] 1.0mmol complex precursor With 1.0mmol organic monodentate ligand and 0.1 mmol of cuprous iodide, 30.0 mmol of triethylamine were put into a reaction vessel, 15 mL of methanol was added in a nitrogen atmosphere, heated to 50° C. and stirred for 8 hours, then cooled to room temperature to form a precipitate. The precipitate was obtained by suction filtration, and washed several times with deionized water, methanol and methyl tert-butyl ether. After drying the solvent, a high-purity organometallic platinum complex phosphorescent material Pt2 can be obtained with a yield of 68.3%.

[0053] Its NMR characterization data are: 1 H NMR (400MHz, CDCl 3 ,δ):9.95(d,J=5.2Hz,1H),9.11(d,J=4.8Hz,2H),7.86(t,J=7.6Hz,1H),7.81(t,J=8.0Hz,1H ), 7.68(d, J=8....

Embodiment 3

[0056] The organometallic platinum complex phosphorescent material Pt3 of the present embodiment has a chemical formula of C 42 h 39 BN 2 Pt, the structural formula is Refer to attached image 3 , its synthesis method is:

[0057] 1.0mmol complex precursor With 1.0mmol organic monodentate ligand and 0.1 mmol of cuprous iodide, 30.0 mmol of triethylamine were put into a reaction vessel, 15 mL of methanol was added in a nitrogen atmosphere, heated to 50° C. and stirred for 8 hours, then cooled to room temperature to form a precipitate. The precipitate was obtained by suction filtration, and washed several times with deionized water, methanol and methyl tert-butyl ether. After drying the solvent, a high-purity organometallic platinum complex phosphorescent material Pt3 can be obtained with a yield of 68.8%.

[0058] Its NMR characterization data are: 1 H NMR (400MHz, CDCl 3 ,δ):9.95(d,J=5.6Hz,1H),8.90(d,J=5.2Hz,2H),7.82(t,J=7.6Hz,1H),7.73(d,J=7.6Hz,1H ),7.82(t,J=7.6H...

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Abstract

The invention relates to a triligand synergistic enhanced aggregation-induced luminescent organometallic platinum complex luminescent material which has a general structural formula as shown in the specification, wherein N (as shown in the specification) is an organic nitrogen heterocyclic ring which comprises pyridine, pyrimidine, thiazole, benzothiazole, quinoline, isoquinoline, pyrazole and imidazole; R1 is a substituent represented by the N on the nitrogen heterocyclic ring; R2 is a substituent on a benzene ring; R3 is a substituent represented by the N on the nitrogen heterocyclic ring; ois an organic monodentate ligand capable of being directly bonded with a platinum center; under the synergistic action of the three ligands, the organometallic platinum complex luminescent material is endowed with the characteristic of aggregation-induced luminescence, the luminescence efficiency of the luminescent material under the aggregation or high concentration condition is significantly improved, and the preparation of a high-performance organic light emitting diode is very facilitated.

Description

technical field [0001] The invention relates to the technical field of new organic optoelectronic materials, in particular to a triligand synergistically enhanced aggregation-induced luminescent organic metal platinum complex luminescent material. Background technique [0002] Organic light-emitting diode is a device that uses organic light-emitting materials to convert electrical energy into light energy. It has very important application value in the fields of new generation high-end display and solid-state lighting. The light-emitting performance of an organic light-emitting diode is very dependent on the type of organic light-emitting material. The internal quantum efficiency of organic light-emitting diodes prepared from traditional fluorescent materials is only about 25%, and the internal quantum efficiency of organic light-emitting diodes prepared from organometallic platinum complex phosphorescent materials can reach 100%. Therefore, research and development of organ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06H01L51/54
CPCC09K11/06C07F15/0086C09K2211/185H10K85/346
Inventor 杨晓龙孙源慧钟道昆周桂江
Owner XI AN JIAOTONG UNIV
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