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A kind of hyperbranched polytriazole functionalized graphene and preparation method thereof

A technology of polytriazole and functionalization, which is applied in the field of hyperbranched polytriazole functionalized graphene and its preparation, can solve problems such as the destruction of graphene lattice structure, achieve excellent physical and chemical properties, ensure lattice structure, excellent The effect of mechanical properties

Active Publication Date: 2017-11-14
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In past studies, hyperbranched molecules were mostly modified on the surface of graphene by means of covalent bonds, but this will inevitably cause great damage to the lattice structure of graphene itself. How to effectively use the characteristics of hyperbranched molecules without It is a challenging task to maintain the intrinsic structure of graphene to the greatest extent

Method used

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  • A kind of hyperbranched polytriazole functionalized graphene and preparation method thereof
  • A kind of hyperbranched polytriazole functionalized graphene and preparation method thereof
  • A kind of hyperbranched polytriazole functionalized graphene and preparation method thereof

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preparation example Construction

[0051] Correspondingly, the preparation method of hyperbranched polytriazole functionalized graphene in the present invention includes the following steps:

[0052] (1) Dissolve 3,5-dihydroxybenzoic acid in methanol, and obtain the reaction product under the catalysis of hydrochloric acid (before the reaction system reacts, the concentration of 3,5-dihydroxybenzoic acid is 50.1-66.6mg / mL, hydrochloric acid The concentration is 6.2~8.1mg / mL), the reaction temperature is 90~100℃, and the reaction time is 12~24 hours. After separation and purification, the reaction product compound A is obtained (the main process of separation and purification can be: The product compound A is recrystallized with deionized water; the choice of solvent during the recrystallization process ensures that compound A can be dissolved in the solvent, while other impurities, such as unreacted raw materials, cannot be used, so that the reaction product compound A) can be isolated.

[0053] (2) Dissolve compoun...

Embodiment 1

[0061] Hyperbranched polytriazole functionalized graphene, the end of the hyperbranched polytriazole is grafted with aromatic groups, and then uniformly modified to the surface of the graphene through non-covalent bonding. The aromatic group is The non-covalent bond function is π-π conjugation.

[0062] The hyperbranched polytriazole functionalized graphene prepared in Example 1 has a field scanning electron microscope image as shown in figure 1 As shown, the cloudiness in the figure shows that the hyperbranched polytriazole is well modified on the graphene surface, and the graphene sheets are well peeled off; the hyperbranched polytriazole functionalized graphene is dispersed in different solvents Situation like figure 2 Shown from figure 2 It can be seen that it is well dispersed in common organic solvents such as chloroform, acetone, tetrahydrofuran, benzyl alcohol, dimethylformamide, and dimethyl sulfoxide.

[0063] The preparation method of hyperbranched polytriazole functi...

Embodiment 2

[0073] Hyperbranched polytriazole functionalized graphene, the end of the hyperbranched polytriazole is grafted with aromatic groups, and then uniformly modified to the surface of the graphene through non-covalent bonding. The aromatic group is The non-covalent bond function is π-π conjugation.

[0074] The thermal weight loss curves of hyperbranched polytriazole functionalized graphene and reduced graphene oxide prepared in Example 2 are as follows image 3 As shown, the grafting amount of the hyperbranched polymer is 45.8%. Such as image 3 As shown, the hyperbranched polytriazole has a good coating on the surface of graphene, which is beneficial to the further modification of graphene.

[0075] The preparation method of hyperbranched polytriazole functionalized graphene in Example 2 is as follows:

[0076] (1) Dissolve 10 g of 3,5-dihydroxybenzoic acid in 150 mL of methanol, add 1.2 mL of hydrochloric acid, and react at 90°C for 24 hours. The methanol is rotary evaporated. The...

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Abstract

The invention discloses a hyperbranched-polytriazole-functionalized graphene and a preparation method thereof. The hyperbranched-polytriazole-functionalized graphene is formed by modifying aryl-modified hyperbranched polytriazole onto the graphene surface. The aryl-modified hyperbranched polytriazole is formed by grafting aryl to the tail end of the hyperbranched polytriazole. The click chemical reaction is utilized to prepare the hyperbranched polytriazole of which the tail end is grafted with the aryl, and the hyperbranched polytriazole is modified to the graphene surface by a noncovalent bond process, so that the hyperbranched-polytriazole-functionalized graphene has favorable dispersity and reaction capacity. The obtained graphene has favorable dispersity and reaction capacity, maintains favorable regularity of the reduced graphene oxide surface, and has wide application prospects in the fields of electronics, chemical industry and biology.

Description

Technical field [0001] The invention belongs to the field of polymer functional materials, and more specifically relates to a hyperbranched polytriazole functionalized graphene and a preparation method thereof. Background technique [0002] Graphene is a kind of sp 2 A two-dimensional material with a hexagonal honeycomb lattice composed of hybrid orbitals. The structure of graphene gives it many unique and fascinating physical properties, such as ultra-high thermal conductivity, electron mobility, Young's modulus, breaking strength and so on. These physical properties make graphene materials have very broad application prospects. At present, graphene materials have become a research hotspot in the fields of physics, chemistry, materials and biology. However, due to its insolubility and the strong π-π interaction and van der Waals force between the sheets, graphene is prone to irreversible aggregation and precipitation in water and organic media. In addition, graphene does not ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/46C09C3/10C08G73/08
CPCC01P2006/22C08G73/08C09C1/46C09C3/10
Inventor 叶昀昇吕淑君解孝林周兴平陈芳妍
Owner HUAZHONG UNIV OF SCI & TECH
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