Janus club-shaped nanometer material and preparing method thereof

A nano-material and rod-shaped technology, applied in the field of materials, can solve problems such as low efficiency and output, and can not meet actual needs, and achieve the effect of simple and easy preparation method

Inactive Publication Date: 2017-09-22
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The efficiency and output of this method are very low and cannot meet the actual needs

Method used

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  • Janus club-shaped nanometer material and preparing method thereof
  • Janus club-shaped nanometer material and preparing method thereof
  • Janus club-shaped nanometer material and preparing method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0047] The preparation method of the above-mentioned functional composite nanorods, for example, may include the following steps:

[0048] Step 1) using a free radical polymerization method to synthesize a three-block copolymer in which the middle segment is a reactive polymer molecular brush segment, and the two ends are respectively a hydrophilic polymer segment and a hydrophobic polymer segment;

[0049] Step 2) Utilize the reactive groups carried by the reactive polymer molecular brush segment of the above-mentioned tri-block copolymer to grow composite functional substances to obtain nanoparticles with different properties at both ends, the two ends are respectively Hydrophilic polymer segments and hydrophobic polymer segments.

[0050] Regarding the preparation method of the above-mentioned three-block copolymer, for example, the intermediate segment can be synthesized as polyacrylic acid by the grafting-onto method by combining atom transfer radical polymerization and c...

Embodiment 1

[0115] Embodiment 1, the preparation of Janus rod-shaped nanomaterial

[0116] Prepare Janus rod-shaped nanomaterials according to the following steps:

[0117] 1. Preparation of Au composite nanorod embedded ball material

[0118] Step 1) ultrasonically disperse 1 mg of Au composite nanorods in 100 g of water, add 5 g of paraffin (melting point is 50-52 ° C) at 70 ° C, emulsify for 5 min under the action of ultrasound, and the ultrasonic power is 100 W, to obtain a stable paraffin / water emulsion .

[0119] Step 2) cooling the above paraffin / water emulsion to room temperature, washing with water to remove the Au composite nanorods in the water phase, and obtaining the Au composite nanorod embedded ball material. The surface morphology was characterized by scanning electron microscopy, such as Image 6 shown.

[0120] 2. Preparation of Janus rod-shaped nanomaterials

[0121] Step 1) Take 2mg of the Au composite nanorod embedding ball material obtained in Example 1 and disp...

Embodiment 2

[0123] Embodiment 2, the preparation of Janus rod-shaped nanomaterial

[0124] Prepare Janus rod-shaped nanomaterials according to the following steps:

[0125] 1. Preparation of silica composite nanorod embedded ball material

[0126]Step 1) ultrasonically disperse 1 mg of silica composite nanorods in 100 g of water, add 5 g of paraffin (melting point is 50-52 ° C) at 70 ° C, emulsify for 5 min under ultrasonic action, and the ultrasonic power is 100 W to obtain stable paraffin / water emulsion.

[0127] Step 2) cooling the above paraffin / water emulsion to room temperature, washing with water to remove the silica composite nanorods in the water phase, to obtain a silica composite nanorod embedded ball material. The surface morphology was characterized by scanning electron microscopy, such as Figure 8 shown.

[0128] 2. Preparation of Janus rod-shaped nanomaterials

[0129] Step 1) Take 2 mg of the silica composite nanorod embedded ball material obtained in Example 2 and ...

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Abstract

The invention discloses a Janus club-shaped nanometer material and a preparing method thereof. The method comprises the steps that an emulsion interface protection method is adopted to carry out modification on the two ends of functional composite nano-rods, wherein the modified club-shaped nanometer material with different compositions and properties at the two ends is the Janus club-shaped nanometer material; the functional composite nano-rods are club-shaped nanometer pellets with multiple properties, and the club-shaped nanometer pellets are obtained by achieving crosslinking of block copolymers through reactivity polymer molecule brush chains of the block copolymers and the growing combination functionality matter. The preparing method of the Janus club-shaped nanometer material is easy to implement, and the Janus club-shaped nanometer material can be prepared in a controlled mode.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a Janus rod-shaped nanomaterial and a preparation method thereof. Background technique [0002] Janus is the door god in ancient Roman mythology. It is said that it has two faces, one side looks at the past and the other side looks at the future, so it is called the double-faced god. In 1991, French scientist Pierre-Gilles de Gennes used the word Janus to describe particles with dual properties for the first time in his Nobel Prize-winning speech (P.G.de Gennes.Rev.Mod.Phys.1992,64,645-648.), causing There is tremendous research interest in Janus materials. Janus nanomaterials have the asymmetry of morphology or the partition integration of different compositional properties, combined with the surface effect and small size effect of nanomaterials, showing multiple functionalities. Therefore, Janus nanomaterials have a wide range of applications in the fields of emulsion stabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/02C08F293/00C08F212/08C08F230/08C08F120/18C08L87/00C08L91/06C08K3/08C08K3/36
CPCC08F120/18C08F212/08C08F230/08C08F293/00C08G81/025C08L87/005C08L2205/035C08L91/06C08K2003/0831C08K3/36
Inventor 杨振忠贾凡梁福鑫
Owner INST OF CHEM CHINESE ACAD OF SCI
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