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Method for synthesizing gold nanosphere, gold nanorod and gold nanowire in organic phase

A technology of gold nanorods and gold nanospheres, applied in the field of synthesizing gold nanospheres, can solve the problems of long reaction time and complicated operation, and achieve the effects of short reaction time, mild reaction conditions and simple and easy method.

Active Publication Date: 2019-08-09
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the growth of the seed liquid, a syringe pump is required to precisely control the flow rate of the growth liquid, which is cumbersome to operate and takes a long time to respond (>12h).

Method used

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  • Method for synthesizing gold nanosphere, gold nanorod and gold nanowire in organic phase
  • Method for synthesizing gold nanosphere, gold nanorod and gold nanowire in organic phase
  • Method for synthesizing gold nanosphere, gold nanorod and gold nanowire in organic phase

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Take 5.0 mg of chloroauric acid and dissolve it in 8.0 mL (12 g) of chloroform to obtain a golden yellow chloroauric acid solution. Then pipette 3 μL (2.7 mg) of oleic acid and 15 μL (12 mg) of oleylamine into the chloroauric acid solution, sonicate for 1 min, and the solution changes from golden yellow to light yellow. Weigh 9.5 mg of triphenylsilane solid powder with a key, dissolve it in 2.0 mL of chloroform, and sonicate for 1 min until triphenylsilane is completely dissolved. Add the triphenylsilane solution into the gold precursor solution, stir magnetically, and react at room temperature (25-35°C) for 2.5h to obtain the following figure 1 A shows gold nanospheres with an average particle size of 13.9 nm.

Embodiment 2

[0037] According to the same steps as in Example 1, the amount of chloroauric acid added is changed to 1.0 mg, and the added amount of triphenylsilane is changed to 300.0 mg to obtain the following figure 1 Gold nanospheres with an average particle size of 2 nm shown in b.

Embodiment 3

[0039] According to the same steps as in Example 1, the addition amount of oleic acid is changed to 1 μ L (0.9 mg), and the addition amount of oleylamine is changed to 5 μ L (4 mg). figure 1 Gold nanospheres with an average particle size of 100 nm shown in c.

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Abstract

The invention discloses a method for synthesizing a gold nanosphere, a gold nanorod and a gold nanowire in an organic phase. The method comprises the steps that a gold precursor is dissolved in an organic solvent, then a solutizer and ultrasonic are added, followingly, a reducing agent is added, stirring reaction is performed for 2-6h under the room temperature, and a gold nano material is obtained. According to the method, oleylamine / oleic acid is introduced into a solutizing step of the gold precursor, the gold precursor is allowed to have good dispersity in the organic solvent, the oleylamine / oleic acid is selectively adsorbed to the surface of the gold nano material, the gold nanosphere, the gold nanorod and the gold nanowire are synthesized, and by adjusting the proportion of the goldprecursor to the reducing agent to the solutizer easily, the grain size of the gold nanosphere and the shape of the gold nano material can be effectively controlled; and the method provided by the invention is simple and easy to implement, good in repeatability, high in stability and high in yield.

Description

[0001] (1) Technical field: [0002] The invention relates to a method for synthesizing gold nanospheres, gold nanorods and gold nanowires in an organic phase. [0003] (two) background technology: [0004] In recent decades, due to its unique size effect and electronic structure, gold nanomaterials have great application prospects in research fields such as catalysis, biomedicine, bioimaging, electronics, photonics, and surface-enhanced Raman spectroscopy. widespread attention. The particle size of spherical gold nanoparticles and the morphology of gold nanomaterials have an important impact on their properties. [0005] At present, the conventional preparation methods of organic phase gold nanomaterials include the use of amino-borane complexes to reduce gold salts in organic solvents to synthesize uniform gold nanospheres, the use of electron beam lithography to synthesize gold nanorods, and the use of long-chain alkylamines as Reducing agent and capping agent to synthesiz...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00B82Y30/00B82Y40/00
CPCB22F9/24B82Y30/00B82Y40/00B22F1/0553B22F1/0547B22F1/07B22F1/054
Inventor 能静孙培龙项晨徐凯云郏侃
Owner ZHEJIANG UNIV OF TECH
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