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Metal nanoparticle-protecting polymer and metal colloidal solution, and method for producing same

A technology of metal nanoparticles and a manufacturing method, which is applied in the field of metal colloid solution and the manufacture of the metal colloid solution, can solve the problem of little ability of dispersant, and achieve the effects of undamaged dispersion stability, high surface energy and small size

Active Publication Date: 2015-12-16
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these dispersants rarely achieve all the desired capabilities described above, requiring further improvement (for example, refer to Patent Documents 2 to 4)

Method used

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  • Metal nanoparticle-protecting polymer and metal colloidal solution, and method for producing same
  • Metal nanoparticle-protecting polymer and metal colloidal solution, and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0067] Now, the present invention will be described in further detail by examples, but these examples do not limit the scope of the present invention. "%" means "% by mass" unless otherwise specified.

[0068] The instruments and measuring methods adopted in the following examples are as follows:

[0069] 1 H-NMR: AL300 manufactured by JEOL Ltd., 300 Hz

[0070] Particle size measurement: FPAR-1000 manufactured by Otsuka Electronics Co., Ltd.

[0071] Plasmon absorption spectrum: UV-3500 manufactured by Hitachi, Ltd.

[0072] pass 1 H-NMR confirms the structure of the protected polymer

[0073] About 3 mL of the protected polymer solution was concentrated and dried thoroughly under reduced pressure. The residue is dissolved in about 0.8mL of NMR measurement solvent (such as deuterated chloroform containing 0.03% tetramethylsilane), the resulting solution is placed in an NMR measurement sample glass tube with an outer diameter of 5mm, and a nuclear magnetic resonance abso...

Synthetic example 1

[0081] [Synthesis Example 1: Synthesis of Tosylated Polyethylene Glycol Monomethyl Ether (PEGM)]

[0082] Under a nitrogen atmosphere, a chloroform solution (30 mL) containing 9.6 g (50.0 mmol) of p-toluenesulfonyl chloride was added dropwise to a solution containing 20.0 g (10.0 mmol) of methoxypolyethylene dichloride under stirring and ice cooling for 30 minutes. Alcohol (Mn=2,000), 8.0g (100.0mmol) pyridine and 20mL chloroform mixed solution. After completion of the dropwise addition, the resulting mixture was further stirred at 40° C. for 4 hours. After the reaction was completed, 50 mL of chloroform was added to dilute the reaction solution. Then, the diluted reaction solution was successively washed with 100 mL of 5% aqueous hydrochloric acid, 100 mL of saturated aqueous sodium bicarbonate and 100 mL of saturated brine, dried over magnesium sulfate, filtered, and concentrated under reduced pressure. The obtained solid was washed several times with hexane, filtered, and...

Synthetic example 2

[0086] [Synthesis Example 2: Synthesis of Polyethyleneimine-b-Polyethylene Glycol Copolymer]

[0087] Under a nitrogen atmosphere, 19.3 g (9.0 mmol) of tosylated polyethylene glycol obtained in Synthesis Example 1 and 30.0 g (3.0 mmol) of branched polyethyleneimine (manufactured by Nippon Catalyst Co., Ltd.) were mixed at 60° C. EPOMIN SP200) was dissolved and mixed by stirring. To the resulting solution was added 0.18 g of potassium carbonate, and the mixture was stirred for 6 hours at a reaction temperature of 120°C. After completion of the reaction, the product was diluted with THF solvent, the residue was removed, and then concentrated under reduced pressure at 30°C. The obtained solid product was redissolved in THF solvent, and heptane was added to the obtained solution, and the residue was again allowed to settle. The residue was isolated by filtration and concentrated under reduced pressure. As a result, 48.1 g of a pale yellow solid product was obtained (yield: 99%)...

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Abstract

A metal nanoparticle-protecting polymer includes a polyacetylalkylenimine segment (A) in which 5 to 100 mol% of primary amines in polyalkylenimine are acetylated and 0 to 50 mol% of secondary amines in polyalkylenimine are acetylated, and a hydrophilic segment (B) in a molecule. Also provided are a method for producing the metal nanoparticle-protecting polymer,a metal colloidal solution including a medium and composite bodies dispersed in the medium, each composite body containing a metal nanoparticle protected with the metal nanoparticle-protecting polymer, and a method for producing the metal colloidal solution.

Description

technical field [0001] The present invention relates to a metal colloid solution and a method for producing the metal colloid solution, the metal colloid solution uses a polymer as a protective agent for metal nanoparticles, and the polymer is a polyalkyleneimine segment comprising acetylation and a hydrophilic The polymer of the sexual segment, or the polymer that also contains the hydrophobic segment in addition to the above two segments. The present invention also relates to the above-mentioned polymers and methods of making the polymers. Background technique [0002] Metal nanoparticles are a kind of nanoparticles with a particle size ranging from 1 to hundreds of nanometers and a relatively large specific surface area. Metal nanoparticles having such properties attract attention from various fields, and are highly expected to be used in electronic materials, catalysts, magnetic materials, optical materials, various sensors, coloring materials, and medical inspections. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/04C08G73/02
CPCC08G73/0206
Inventor 李承泽姚宗武
Owner DIC CORP
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