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A kind of phosphorescent polymer material and its preparation method and application

A polymer material, epoxy polymer technology, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of oxygen consumption, vibration dissipation, etc., and achieve cheap raw materials, good stability, and high phosphorescence quantum yield Effect

Active Publication Date: 2021-06-29
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in pure organic molecules without heavy atoms, the generation of long-lived triplet excitons is uncommon, and triplet excitons in organic materials are highly concentrated and easily dissipated by vibrations and consumed by oxygen.

Method used

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  • A kind of phosphorescent polymer material and its preparation method and application
  • A kind of phosphorescent polymer material and its preparation method and application
  • A kind of phosphorescent polymer material and its preparation method and application

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preparation example Construction

[0046] A method for preparing a high-efficiency and long-life room temperature phosphorescent polymer material, including Scheme 1 and Scheme 2:

[0047] The organic phosphorescent small molecules shown in formula A and formula B are suitable for scheme one:

[0048] Dissolve the organic phosphorescent small molecules shown in formula A and formula B in the above epoxy matrix under the protection of nitrogen, stir evenly, and cool to room temperature; mix this mixture with the above liquid curing agent in a certain proportion, and stir until transparent , injected into the mold, after curing, the phosphorescent material is obtained.

[0049] The organic phosphorescent small molecules represented by formula C, formula D, and formula E are suitable for scheme two:

[0050] Dissolve the small organic phosphorescent molecules shown in Formula C, Formula D, and Formula E in the above-mentioned liquid curing agent in a certain proportion, and stir evenly; mix the mixture with the a...

Embodiment 1

[0054] Preparation of a pure organic high-efficiency long-life room temperature phosphorescent polymer material doped with molecules represented by formula A (N,N,N',N'-tetramethylbenzidine), the preparation steps are as follows:

[0055] The organic phosphorescent small molecule (TMB molecule) represented by formula A was dissolved in the epoxy matrix 2,2-bis-(4-glycylaminophenyl)propane under the protection of nitrogen, stirred evenly and then cooled to room temperature. The molar ratio of the organic phosphorescent small molecule to the epoxy group in the epoxy matrix is ​​1:100. Mix this mixture with the aliphatic curing agent ethylenediamine, where the molar ratio of curing agent ethylenediamine to epoxy groups in the epoxy matrix is ​​1:2. After stirring until transparent, pour into the mold, first keep at 25°C for 24 hours, and then keep at 80°C for 4 hours to obtain the phosphorescent material.

[0056] figure 1 It is the phosphorescence spectrum of the pure organic ...

Embodiment 2

[0058] To prepare a pure organic high-efficiency long-life room temperature phosphorescent polymer material doped with molecules (triphenylamine) shown in formula B, the preparation steps are as follows:

[0059] The organic phosphorescent small molecule (triphenylamine) represented by formula B was dissolved in the epoxy matrix 2,2-bis-(4-glycylaminophenyl)propane under the protection of nitrogen, stirred evenly and then cooled to room temperature. The molar ratio of the organic phosphorescent small molecule to the epoxy group in the epoxy matrix is ​​1:100. Mix this mixture with the aliphatic curing agent ethylenediamine, where the molar ratio of curing agent ethylenediamine to epoxy groups in the epoxy matrix is ​​1:2. After stirring until transparent, pour into the mold, first keep at 25°C for 24 hours, and then keep at 80°C for 4 hours to obtain the phosphorescent material.

[0060] Figure 5 is the phosphorescence spectrum of the prepared pure organic high-efficiency l...

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Abstract

The invention provides a phosphorescent polymer material and its preparation method and application, and relates to the technical field of organic light-emitting materials and anti-counterfeiting materials, which can obtain a pure organic polymer material with high-efficiency and long-life room temperature phosphorescence properties, and realize a substantial extension of phosphorescence life At the same time, the quantum efficiency of phosphorescence is improved, the preparation is simple, the raw materials are cheap, and the stability is good; the method effectively suppresses the non-radiative attenuation of various organic phosphors through a dense three-dimensional epoxy polymer network, thereby achieving simultaneous realization in the polymer film. Ultra-long lifetime and high quantum yield; the absolute phosphorescent quantum yield of the prepared phosphorescent polymer material is more than 8.35%, the phosphorescence lifetime is more than 2.28s; the phosphorescence property retention time at room temperature is more than 7s. The technical scheme provided by the invention is applicable to the process of preparing room temperature phosphorescent materials.

Description

【Technical field】 [0001] The invention relates to the technical field of organic luminescent materials and anti-counterfeiting materials, in particular to a phosphorescent polymer material and its preparation method and application. 【Background technique】 [0002] Ultra-long room temperature phosphorescent materials have unique advantages in information encryption, medical imaging, optical display and other fields due to their long-lasting phosphorescence. With the rapid development of organic optical displays and flexible sensors, pure organic ultralong room-temperature phosphorescent materials have become outstanding substitutes for conventional inorganic or organometallic phosphors due to their high transparency and low cost. Relevant researchers have proposed some methods to obtain pure organic ultra-long room temperature phosphorescent materials, such as crystallization engineering, H aggregates, host-guest interaction, deuteration and other methods. However, in these ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/62C08G59/56C08G59/50C08G59/24C09K11/06
CPCC08G59/245C08G59/5006C08G59/5033C08G59/56C08G59/621C09K11/06C09K2211/1425C09K2211/1433
Inventor 王国杰武波
Owner UNIV OF SCI & TECH BEIJING
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