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Metallic nanoparticle composite and method for producing the same

A metal nanoparticle and manufacturing method technology, applied in cable/conductor manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of frequent membrane replacement, membrane blockage, cost increase, etc., achieve simple and easy manufacturing, and maintain excellent stability. , excellent dispersion effect

Active Publication Date: 2015-03-18
MARUZEN PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, in electrodialysis and ultrafiltration described in Patent Documents 1 and 2, there is a problem that membrane clogging is likely to occur and frequent replacement of the membrane is required, resulting in high cost.

Method used

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  • Metallic nanoparticle composite and method for producing the same
  • Metallic nanoparticle composite and method for producing the same
  • Metallic nanoparticle composite and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0185] Example 1 Manufacture of gold nanoparticle dispersion (1)

[0186] Into a 100 mL glass eggplant-shaped flask, 27 mg of the star polymer A obtained in Synthesis Example 1, 1.8 mL of an aqueous chloroauric acid solution with a metal content of 1 mol / L (354 mg of gold) and 90 mL of ion-exchanged water were charged and stirred. Then, in the state of maintaining stirring, add NaBH which is 10 molar equivalents to chloroauric acid 4 , performing a reduction reaction at room temperature for 1 hour to obtain a gold nanoparticle dispersion containing a gold nanoparticle complex.

[0187] The dispersion liquid was red, and the absorption spectrum of the dispersion liquid was measured. As a result, plasmon absorption from gold nanoparticles was observed around 540 nm, and it was considered that gold nanoparticles were generated.

[0188] In addition, observation of the above-mentioned dispersion liquid using TEM confirmed that the particle diameter of the generated gold nanopar...

Embodiment 2

[0192] Manufacture of Embodiment 2 Silver Nanoparticle Dispersion Liquid (1)

[0193] Into a 100 mL glass eggplant-shaped flask, 23 mg of the star polymer A obtained in Synthesis Example 1, 7.85 μL of an aqueous silver nitrate solution with a metal content of 1 mol / L (0.85 mg of silver) and 74 mL of ion-exchanged water were charged and stirred. Next, 10 molar equivalents of NaBH to silver nitrate were added while stirring. 4 , the reduction reaction was carried out at room temperature for 1 hour to obtain a silver nanoparticle dispersion containing a silver nanoparticle complex.

[0194] The above-mentioned dispersion liquid was yellow, and the absorption spectrum of the dispersion liquid was measured. As a result, plasmon absorption derived from silver nanoparticles was observed around 395 nm.

Embodiment 3

[0195] Manufacture of Example 3 Gold Nanoparticle Dispersion (2)

[0196] Into a 100 mL glass eggplant-shaped flask, 27 mg of the star-shaped polymer B obtained in Synthesis Example 2, 1.8 mL of an aqueous chloroauric acid solution with a metal content of 1 mol / L (354 mg of gold), and 90 mL of ion-exchanged water were charged and stirred. Then, in the state of maintaining stirring, add NaBH which is 10 molar equivalents to chloroauric acid 4 , performing a reduction reaction at room temperature for 1 hour to obtain a gold nanoparticle dispersion containing a gold nanoparticle complex.

[0197] The above-mentioned dispersion liquid was red, and the absorption spectrum of the dispersion liquid was measured. As a result, plasmon absorption due to gold nanoparticles was observed around 535 nm, and it was considered that gold nanoparticles were generated.

[0198] Comparative Example 1 Production of Gold Nanoparticle Dispersion Liquid (3)

[0199] A gold nanoparticle dispersi...

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Abstract

Provided are a metal nanoparticle composite which exhibits excellent stability over time and retention stability and is useful as a raw material for a metal nanoparticle-dispersed film, a method for producing the composite, a metal nanoparticle dispersion liquid, a composition for forming a metal nanoparticle-dispersed film, and a metal nanoparticle-dispersed film. Disclosed is a metal nanoparticle composite comprising (A) a star-shaped polymer having a central core and arms bonded to the central core, the arms comprising a repeating unit represented by the following formula (1) and a repeating unit represented by the following formula (2); and (B) metal nanoparticles supported thereon: wherein in the formula (1), R 1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and in the formula (2), R 2 represents a methyl group or an ethyl group; and k represents an integer from 1 to 10.

Description

technical field [0001] The present invention relates to a metal nanoparticle composite, a method for producing the same, a metal nanoparticle dispersion liquid, a composition for forming a metal nanoparticle dispersed film, and a metal nanoparticle dispersed film. Background technique [0002] Metal nanoparticles such as gold nanoparticles are used in a wide range of fields such as coloring materials, fluorescent materials, polarizing materials, nanocrystal materials, and conductive materials because they have inherent properties that bulk materials do not have. [0003] The production method of the above-mentioned metal nanoparticles is roughly divided into a dry method and a wet method. As a dry method, a vapor deposition method is mentioned, but a special device is required. [0004] On the other hand, if the wet method is used, metal nanoparticles can be obtained by simple operation. As a typical method, there is known a method in which a protective agent and metal ions ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F1/02B22F9/00B22F9/24C08F283/06C08L3/08C08L51/00H01B1/22H01B5/00H01B5/14H01B13/00B22F1/054B22F1/0545B22F1/102
CPCB22F9/24C08F297/00B22F1/0062C08K5/05C08K3/08B22F1/0018C08L29/10B82Y30/00C08L53/00C23C18/1635C08F116/14C08F216/125C08F216/1416C09D129/10C23C18/40C23C18/44C08K2003/0831C08K9/12C08K2003/0806C08K2003/085C08K2201/011C08L29/04C08L33/12C08L83/04C08F216/1433B22F1/0545B22F1/102B22F1/054B22F1/00B22F9/00
Inventor 吉田宪弘西浦崇雄
Owner MARUZEN PETROCHEMICAL CO LTD
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