Preparation method and application of amphiphilic photoelectric active branched macromolecules

A photoelectric active, macromolecular technology, applied in the direction of electrochemical variables of materials, can solve the problems of easy entanglement and agglomeration, limited application, poor solubility, etc., and achieves easy preparation and operation, excellent product performance, and controllable polymer structure. Effect

Inactive Publication Date: 2015-05-27
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the special structure and properties of carbon nanotubes, its poor solubility, easy entanglement and agglomeration limit its application.

Method used

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  • Preparation method and application of amphiphilic photoelectric active branched macromolecules
  • Preparation method and application of amphiphilic photoelectric active branched macromolecules
  • Preparation method and application of amphiphilic photoelectric active branched macromolecules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1.46g (5mmol) 7-(4-vinylbenzyloxy)-4-methylcoumarin, 1.42g (5mmol) N-(4-vinylbenzyl)-9H-carbazole, 1.27g (13mmol) maleic anhydride, 0.069g (0.46mmol) 4-vinylbenzylmercaptan, 0.077g (0.469mmol) azobisisobutyl Nitrile, dissolved in 40ml of N,N-dimethylformamide polymerization solvent, heated the flask in a constant temperature oil bath, stirred until it was completely dissolved, fed nitrogen into the flask for 30 minutes, raised the temperature to 65°C, and reacted at constant temperature for 24 hours. After the reaction is finished, cool to room temperature, precipitate the reaction product in toluene, and obtain a white powdery solid by suction filtration. After repeated dissolution, precipitation, and suction filtration three times, dry in a vacuum oven to constant weight to obtain amphiphilic photoactive branched macromolecules product.

Embodiment 2

[0026] 1.46g (5mmol) 7-(4-vinylbenzyloxy)-4-methylcoumarin, 1.42g (5mmol) N-(4-vinylbenzyl)-9H-carbazole, 1.27g (13mmol) maleic anhydride, 0.138g (0.92mmol) 4-vinylbenzylmercaptan, 0.078g (0.478mmol) azobisisobutyl Nitrile, dissolved in 40ml of N,N-dimethylformamide polymerization solvent, heated the flask in a constant temperature oil bath, stirred until it was completely dissolved, fed nitrogen into the flask for 30 minutes, raised the temperature to 65°C, and reacted at constant temperature for 24 hours. After the reaction is finished, cool to room temperature, precipitate the reaction product in toluene, and obtain a white powdery solid by suction filtration. After repeated dissolution, precipitation, and suction filtration three times, dry in a vacuum oven to constant weight to obtain amphiphilic photoactive branched macromolecules product.

Embodiment 3

[0028]1.46g (5mmol) 7-(4-vinylbenzyloxy)-4-methylcoumarin, 1.42g (5mmol) N-(4-vinylbenzyl)-9H-carbazole, 1.27g (13mmol) maleic anhydride, 0.276g (1.84mmol) 4-vinylbenzylmercaptan, 0.082g (0.497mmol) azobisisobutyl Nitrile, dissolved in 40ml of N,N-dimethylformamide polymerization solvent, heated the flask in a constant temperature oil bath, stirred until it was completely dissolved, fed nitrogen into the flask for 30 minutes, raised the temperature to 65°C, and reacted at constant temperature for 24 hours. After the reaction is finished, cool to room temperature, precipitate the reaction product in toluene, and obtain a white powdery solid by suction filtration. After repeated dissolution, precipitation, and suction filtration three times, dry in a vacuum oven to constant weight to obtain amphiphilic photoactive branched macromolecules product.

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Abstract

A preparation method of amphiphilic photoelectric active branched macromolecules belongs to the field of macromolecular polymerization. The preparation method comprises the following steps: (1) under normal pressure condition, 7-(4-vinyl benzyloxy)-4-methylcoumarin, N-(4-vinyl benzyl)-9H-carbazole, 4-vinyl benzyl mercaptan, maleic anhydride, a radical initiator and a solvent are placed in a 250ml four-neck flask; (2) nitrogen is introduced into the container in the step (1) for 30 min, sealed stirring is carried out to fully dissolve the nitrogen, solution temperature rises to 65-70 DEG C and a thermostatic reaction is carried out for 24h; and (3) after the reaction, the solution obtained from the step (2) is precipitated in a precipitating agent and undergoes suction filtration, and a solid obtained after filtration undergoes dissolution, precipitation and suction filtration repeatedly for 3 times, and the solid obtained finally undergoes vacuum drying to constant weight. According to the invention, polymerization conditions are mild, and the preparation method is simple to operate. The polymer obtained can be used to remarkably raise dispersion stability of carbon nano-tube in an aqueous solvent.

Description

Technical field: [0001] The invention relates to the field of functional polymer materials, in particular to a branched 7-(4-vinylbenzyloxy)-4-methylcoumarin / N-(4-vinylbenzyl)-9H-carb The field of azole-alt-maleic anhydride [BP(VBCz / Vm-alt-Ma)] copolymers and amphiphilic micellar self-assembly technology. Background technique: [0002] Compared with traditional linear polymers, branched polymers have a unique highly branched structure and a large number of intramolecular cavities, more reactive end groups, and no entanglement between molecules, so they show good dissolution Sex, low viscosity and other special properties. [0003] At present, most of the self-assembly research focuses on linear polymer systems, while the self-assembly research of branched polymers has attracted much attention because of its relatively simple synthesis method and rich functionalization sites of the assembly. Yan Deyue et al. used amphiphilic hyperbranched multi-armed copolymers to obtain mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F222/06C08F212/32C08F2/38C08F4/04C01B31/02C09D135/06G01N27/26
Inventor 刘仁曾雪标刘晓亚刘敬成罗静郑远义
Owner JIANGNAN UNIV
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