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Metallic nanoparticle composite and method for producing the same

A technology of metal nanoparticles and manufacturing methods, applied in cable/conductor manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of frequent replacement of membranes, high cost, membrane clogging, etc., achieve simple and easy manufacturing, and maintain stability Excellent, excellent dispersion effect

Active Publication Date: 2013-10-09
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 is a metal nanoparticle composite that has excellent stability over time and shelf life and is useful as a starting material for a metal nanoparticle dispersed film. Also provided is a method for producing the same, a metal nanoparticle dispersion, a composition for forming a metal nanoparticle dispersed film, and a metal nanoparticle dispersed film. The metal nanoparticles are obtained by supporting metal nanoparticles (B) in a star-shaped polymer (A) having a central nucleus and arms joined to the central nucleus, wherein the arms comprise repeating units represented by the following general formula (1) and repeating units represented by the following general formula (2). (In formula (1), R1 is a hydrogen atom or C1-4 alkyl group and in formula (2), R2 is a methyl or ethyl group and k is an integer between 1 and 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 Applications(China)
IPC IPC(8): B22F1/00B22F1/02B22F9/00B22F9/24C08F283/06C08L3/08C08L51/00H01B1/22H01B5/00H01B5/14H01B13/00B22F1/054B22F1/0545B22F1/102
CPCC08L53/00B22F1/0018B22F1/02C08K5/05B22F1/0062C08K3/08B22F9/24C08L29/10B82Y30/00C08F297/00C23C18/1635C08F116/14C08F216/125C08F216/1416C09D129/10C23C18/40C23C18/44C08K2003/0831C08K9/12C08K2003/0806C08K2003/085C08K2201/011C08L29/04C08L33/12C08L83/04C08F216/1433B22F1/0545B22F1/102B22F1/054B22F1/00B22F9/00
Inventor 吉田宪弘西浦崇雄
Owner MARUZEN PETROCHEMICAL CO LTD
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