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A kind of pure organic room temperature phosphorescent polymer material with lactam ring structure and its preparation method

A technology of polymer materials and lactam rings, applied in the field of pure organic room temperature phosphorescent polymer materials and their preparation, to achieve the effect of good phosphorescence characteristics

Active Publication Date: 2020-12-04
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there are few reports on lactam-based phosphorescent polymer materials without hydrogen bonds.

Method used

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  • A kind of pure organic room temperature phosphorescent polymer material with lactam ring structure and its preparation method
  • A kind of pure organic room temperature phosphorescent polymer material with lactam ring structure and its preparation method
  • A kind of pure organic room temperature phosphorescent polymer material with lactam ring structure and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of a pure organic room-temperature phosphorescent polymer material with a lactam ring structure, the specific steps are as follows: Weigh 33mg of benzoic acid compounds, 10mg of azobisisobutyronitrile and dissolve them in 1.5mL of ethanol, add 1.5mL of N-vinylpyrrolidone , dissolved, blown air with a needle, and reacted for 12 hours at 70°C under the protection of nitrogen. The obtained product was dropped into acetone for beating, the clear liquid was removed, and the pure organic room temperature phosphorescent polymer material was obtained after rotary evaporation and drying.

[0029] The specific structure of the obtained product polymer is as follows:

[0030]

[0031] Its phosphorescent emission peak is around 428nm (see figure 1 ), the lifetime is 0.947ms, and the quantum yield is 0.8%.

Embodiment 2

[0033] A preparation method of a pure organic room-temperature phosphorescent polymer material with a lactam ring structure, the specific steps are as follows: Weigh 38 mg of bronaphthalimide compounds, 8 mg of azobisisobutyronitrile and dissolve them in 1 mL of N,N-dimethylformaldehyde Add 1mL of N-vinylpyrrolidone to the amide, dissolve it, inflate it with a needle, and react at 70°C for 12h under the protection of nitrogen. The obtained product was dropped into acetone for beating, the supernatant liquid was removed, and the pure organic room-temperature phosphorescent polymer material was obtained after rotary evaporation and drying.

[0034]

[0035] Its phosphorescent emission peak is around 582nm (see figure 2 ), and has a companion peak around 610nm, a lifetime of 0.463ms, and a quantum yield of 1.6%.

Embodiment 3

[0037] A method for preparing a pure organic room-temperature phosphorescent polymer material with a lactam ring structure, the specific steps are as follows: Weigh 20 mg of azobisisobutyronitrile and dissolve it in 2 mL of ethanol, add 2 mL of N-vinylpyrrolidone, dissolve, and blow air through a needle. After air blowing, inject 204mg of 6-bromo-1-hexene monomer with a needle, and react at 70°C for 12h under the protection of nitrogen. The obtained product was dropped into diethyl ether for beating, the clear liquid was removed, and the pure organic room-temperature phosphorescent polymer material was obtained after rotary evaporation and drying.

[0038] The specific structure of the obtained product polymer is as follows:

[0039]

[0040] Its phosphorescent emission peak is around 496nm (see image 3 ), the lifetime is 0.037ms, and the quantum yield is 0.9%.

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Abstract

The invention relates to a pure organic room temperature phosphorescent polymer material with a lactam ring structure and a preparation method thereof. The polymer material is prepared by dissolving phosphorescent monomers and lactam monomers without hydrogen bonds in an organic solvent Add an initiator and react under an inert atmosphere. The reaction product is dropped into acetone or ether for beating, and the clear liquid is removed by rotary evaporation and dried to obtain the product. The present invention adopts the lactam ring-type phosphorescent polymer material without hydrogen bond as the matrix, and the lactam ring-type homopolymer and its copolymerization products with phosphorescent monomers all show good phosphorescence characteristics; The method of monomer copolymerization realizes wavelength adjustment, without the participation of precious metals, convenient preparation, reasonable cost, and high adjustment efficiency; the preparation, polymerization and post-treatment of phosphorescent fluorescent monomers are relatively simple; the product state of amorphous powder is conducive to further processing; Lactam cyclic polymers have excellent biocompatibility and have application prospects in the biological field.

Description

technical field [0001] The invention belongs to the field of organic luminescent materials, in particular to a pure organic room-temperature phosphorescent polymer material with a lactam ring structure and a preparation method thereof. Background technique [0002] Compared with fluorescence, room temperature phosphorescence (RTP) has a larger Stokes shift and a longer lifetime, and has broad practical application prospects in the fields of biological imaging, molecular switches, and organic light-emitting diodes (OLEDs). Traditional inorganic and organometallic phosphorescent materials often use heavy metals such as Pt and Ir, but heavy metals are expensive, highly toxic, and not environmentally friendly. In the absence of heavy metals, there is usually spin-forbidden between singlet and triplet states, so pure organic compounds usually require cryogenic temperatures and inert environments to observe phosphorescence. [0003] At present, the preparation of pure organic roo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F216/10C08F220/60C08F214/16C08F226/10C08F226/06C09K11/06
CPCC08F216/10C08F220/60C08F214/16C09K11/06C08F220/606C08F226/10C08F226/06
Inventor 马骧王迪森严子昂施明妤戴竞红柴琼洁贵慧强田禾
Owner EAST CHINA UNIV OF SCI & TECH
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