Preparation method of heavy-atom-free and amorphous-state pure organic long-service-life room-temperature phosphorescent polymer material

A polymer material, room temperature phosphorescence technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of molecular design limitations, high cost, heavy atom toxicity, etc., achieve simple polymerization process and post-treatment, reduce cost and synthesis. Difficulty, effects of strong luminous properties

Active Publication Date: 2019-02-05
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, room-temperature phosphorescent materials mainly focus on noble metal complexes, and noble metals are expensive and harmful to organisms. At the same time, existing pure organic room-temperature phosphorescent materials often contain halogen heavy atoms, which increases the difficulty and danger of the synthesis process.
At present, pure organic room temperature phosphorescent materials are mainly crystalline, which requires strict cultivation conditions and the process is uncontrollable. Such materials are relatively unstable and easily lose their luminescent properties.
At the same time, the halogen heavy atom system will increase the cost of materials, the existence of heavy atoms is also relatively toxic, and the molecular design is also limited

Method used

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  • Preparation method of heavy-atom-free and amorphous-state pure organic long-service-life room-temperature phosphorescent polymer material
  • Preparation method of heavy-atom-free and amorphous-state pure organic long-service-life room-temperature phosphorescent polymer material
  • Preparation method of heavy-atom-free and amorphous-state pure organic long-service-life room-temperature phosphorescent polymer material

Examples

Experimental program
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Effect test

Embodiment 1

[0019] A method for preparing a pure organic long-life room temperature phosphorescent polymer material without heavy atoms and amorphous forms. The specific steps are as follows:

[0020] Weigh 0.050g of compound 1, 0.545g of acrylamide, and 0.0025g of azobisisobutyronitrile and dissolve it in 2ml of N,N-dimethylformamide, blow off oxygen for 30min, and react at 65°C for 12h. The resulting product was washed with methanol and dried to obtain the product. see figure 1 , the quantum yield is 6.4%, the emission peak is around 434nm, and the lifetime is 123ms.

Embodiment 2

[0022] A method for preparing a pure organic long-life room temperature phosphorescent polymer material without heavy atoms and amorphous forms. The specific steps are as follows:

[0023] Weigh 0.050g of compound 3, 0.555g of acrylamide, and 0.0026g of azobisisobutyronitrile and dissolve it in 2ml of N,N-dimethylformamide, blow off oxygen for 30min, and react at 65°C for 12h. The resulting product was washed with methanol and dried to obtain the product. see figure 2 , its quantum yield is 17.87%, the emission peak is around 425nm, and its lifetime is 522ms.

Embodiment 3

[0025] A method for preparing a pure organic long-life room temperature phosphorescent polymer material without heavy atoms and amorphous forms. The specific steps are as follows:

[0026] Weigh 0.050g of compound 4, 0.443g of acrylamide, and 0.0021g of azobisisobutyronitrile and dissolve it in 2ml of N,N-dimethylformamide, blow off oxygen for 30min, and react at 65°C for 12h. The resulting product was washed with methanol and dried to obtain the product. see image 3 , the quantum yield is 5.15%, the emission peak is around 418nm, and the lifetime is 198ms.

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Abstract

The invention relates to a preparation method of a heavy-atom-free and amorphous-state pure organic long-service-life room-temperature phosphorescent polymer material and belongs to the field of organic light emitting materials. The method is applicable to almost aromatic-ring phosphorescent monomers containing an oxygen functional group, and the monomers are simply copolymerized with acrylamide to obtain the pure organic polymer material with a long-service-life room-temperature phosphorescent property. According to the preparation method, expensive heavy metal is not used and a system does contains halogen heavy atoms including bromine and the like; raw materials are simple and easy to obtain and the preparation method is simple and convenient; the obtained material has good light emitting performance, water solubility and no toxin and can be applied to a lot of fields. A formula is shown in the description.

Description

technical field [0001] The invention relates to a preparation method of a pure organic long-life room temperature phosphorescent polymer material without heavy atoms and amorphous form, and belongs to the field of organic light-emitting materials. Background technique [0002] Organic room-temperature phosphorescent materials are widely used in biological imaging, chemical sensing, etc., and a convenient preparation method and processing process are especially needed. At present, room-temperature phosphorescent materials mainly focus on noble metal complexes, and noble metals are expensive and harmful to organisms. At the same time, existing pure organic room-temperature phosphorescent materials often contain halogen heavy atoms, which increases the difficulty and danger of the synthesis process. The current pure organic room-temperature phosphorescent materials are mainly crystalline, which requires strict cultivation conditions and the process is uncontrollable. Such mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F212/14C08F218/16C08F220/30C09K11/06
CPCC09K11/06C08F220/56C09K2211/14C08F220/303C08F212/14
Inventor 马骧徐超李腾田禾
Owner EAST CHINA UNIV OF SCI & TECH
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