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Phosphorescent polymer material as well as preparation method and application thereof

A technology of polymer materials and epoxy polymers, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of oxygen consumption, vibration dissipation, etc., and achieve the effect of cheap raw materials, good stability, and simple preparation

Active Publication Date: 2020-10-30
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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  • Phosphorescent polymer material as well as preparation method and application thereof
  • Phosphorescent polymer material as well as preparation method and application thereof
  • Phosphorescent polymer material as well as preparation method and application thereof

Examples

Experimental program
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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 as well as a preparation method and application thereof. The invention relates to the technical field of organic light-emitting materials and anti-counterfeiting materials; a pure organic polymer material having high-efficiency and long-service-life room-temperature phosphorescent property can be obtained, the phosphorescence service life isgreatly prolonged, the phosphorescence quantum efficiency is improved, the preparation is simple, the raw materials are cheap, and the stability is good. According to the method, non-radiative attenuation of various organic phosphorescent bodies is effectively inhibited through a compact three-dimensional epoxy polymer network, so that ultra-long service life and high quantum yield are realized in a polymer film at the same time; the absolute phosphorescent quantum yield of the prepared phosphorescent polymer material is 8.35% or above, and the phosphorescent lifetime is 2.28 s or above; andthe phosphorescent property retention time at room temperature is 7 s or longer. The phosphorescent polymer material provided by the technical scheme provided by the invention is suitable for the preparation process of the room-temperature phosphorescent material.

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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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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