A kind of luminescent material and its preparation method and luminescent method

A technology of luminescent materials and mixed liquids, applied in luminescent materials, chemical instruments and methods, organic chemistry, etc., can solve the problems of low manufacturing cost, achieve the effects of improving selectivity, increasing reaction yield, and simple operation

Active Publication Date: 2021-04-02
HUBEI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The performance of WOLEDs is comparable to that of fluorescent lamps and inorganic light-emitting diodes, but its manufacturing cost is lower. From an application point of view, WOLEDs are very attractive and are flat-panel light sources, unlike most light sources in use today.

Method used

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  • A kind of luminescent material and its preparation method and luminescent method
  • A kind of luminescent material and its preparation method and luminescent method
  • A kind of luminescent material and its preparation method and luminescent method

Examples

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Embodiment 1

[0021] Embodiment 1 of the present invention provides a preparation method of the target product 3g (N-[(2-pyridyl)imidazolium]methylene-bi(2-pyridyl)imidazoplatin (tolanylacetylene) complex):

[0022] (1) Synthesis of 1g: Weigh 1940mg (13.3mmol) of 2-(2-pyridine) imidazole and grind it into powder, add it to the flask, then add 840mg (15mmol) of KOH and 110mg (0.3mmol) of tetrabutylammonium bromide to the flask ), add 2 to 3 drops of ultrapure water to the flask, and stir the mixture in the flask into an off-white viscous substance, then add 50ml of CH 2 Cl 2 , after stirring and mixing evenly, after reacting at room temperature for 30 hours, the color of the mixed solution becomes light yellow, stop the reaction, heat the mixed solution to evaporate the solvent (the heating temperature is not particularly limited, as long as the solvent can be evaporated) , the remaining solute was eluted with petroleum ether and ethyl acetate at a volume ratio of 1:1, and then separated by...

Embodiment 2

[0031] Example 2 of the present invention provides a preparation method of the target product 3g (N-[(2-pyridyl)imidazolium]methylene-bi(2-pyridyl)imidazoplatin (tolanylacetylene) complex):

[0032] (1) Synthesis of 1g: Weigh 1750mg (12mmol) of 2-(2-pyridine) imidazole and grind it into powder, add it to the flask, then add 728mg (13mmol) of KOH and 37mg (0.1mmol) of tetrabutylammonium bromide to the flask , add 2 to 3 drops of ultrapure water to the flask, and stir the mixture in the flask into an off-white viscous substance, then add 35ml of CH 2 Cl 2 , after stirring and mixing evenly, after reacting at room temperature for 25 hours, the color of the mixed solution turns light yellow, stop the reaction, heat the mixed solution to evaporate the solvent, and use petroleum ether and ethyl acetate with a volume ratio of 1:1 for the remaining solute After elution of the ester and separation by column chromatography, 1 g of off-white crystals was obtained;

[0033] (2) Synthesi...

Embodiment 3

[0037] Example 3 of the present invention provides a preparation method of the target product 3g (N-[(2-pyridyl)imidazolium]methylene-bi(2-pyridyl)imidazoplatin (tolanylacetylene) complex):

[0038] (1) Synthesis of 1g: Weigh 2188mg (15mmol) of 2-(2-pyridine) imidazole and grind it into powder, add it to the flask, then add 1008mg (18mmol) of KOH and 175mg (0.5mmol) of tetrabutylammonium bromide to the flask , add 2 to 3 drops of ultrapure water into the flask, and stir the mixture in the flask into an off-white viscous substance, then add 65ml of CH 2 Cl 2 , after stirring and mixing evenly, after reacting at room temperature for 35 hours, the color of the mixed solution turns light yellow, stop the reaction, heat the mixed solution to evaporate the solvent, and use petroleum ether and ethyl acetate with a volume ratio of 1:1 for the remaining solute After elution of the ester and separation by column chromatography, 1 g of off-white crystals was obtained;

[0039] (2) Synt...

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Abstract

The invention discloses a light emitting material which is a platinum alkynyl containing compound, wherein the molecular formula is C33H24N6Pt, and the molecular weight is 699. The compound is a greenlight or green-yellow light emitting material which has an exact spatial structure and an accurate molecular formula; the molecule, containing alkynyl, conjugate large pi bond, Pt(II) ions with highoptical activity, etc., promotes electron transition and energy transfer, and thus, the compound disclosed by the invention has high photoelectric activity. The invention also discloses a preparationmethod of the light emitting material. The preparation method comprises the following steps: synthesizing an intermediate 1g from 2-(2-pyridine)imidazole and dichloromethane; synthesizing an intermediate 2g from the 1g and dimethylsulfoxide platinum chloride; finally, synthesizing the material from the 2g and phenylacetylene. The preparation method disclosed by the invention is easy to operate andhas high reaction selectivity. The invention also provides a method of emitting green light or green-yellow light of the light emitting material.

Description

technical field [0001] The invention relates to the technical field of organic luminescent materials, in particular to a luminescent material, a preparation method and a luminescent method thereof. Background technique [0002] Against the backdrop of increasingly prominent global energy shortages, white organic light-emitting devices (White Organic Light-Emitting Devices, WOLEDs) are widely used due to their wide source of materials, high performance, and the ability to realize large-area flexible display and lighting. focus on. The performance of WOLEDs is comparable to fluorescent lamps and inorganic light-emitting diodes, but its manufacturing cost is lower. From an application point of view, WOLEDs are very attractive and are flat-panel light sources, unlike most light sources in use today. [0003] In recent years, many Pt(II) complexes with high brightness emission have been used as fluorescent materials in organic light-emitting devices (OLEDs). Metal platinum N^N ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F15/00C09K11/06
CPCC07F15/0086C09K11/06C09K2211/185
Inventor 金传明陈雨张鲲鹏钟蒙
Owner HUBEI NORMAL UNIV
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