Eight-branch gold nano particle, preparation method, application and intermediate thereof

A gold nanoparticle and nanogold technology, which is applied in the field of eight-branched gold nanoparticles, preparation, application and intermediates, can solve the problem of low yield, low repeatability, uneven size of branched gold nanoparticles, etc. question

Active Publication Date: 2020-01-17
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the low yield and low repeatability of the method for preparing branched gold nanoparticles in the prior art, or the prepared branched gold nanoparticles are not uniform in size, uncontrollable in shape or poor in uniformity, etc. Shortcomings, thereby providing a kind of eight-branched gold nanoparticle with ligand A, preparation method, application and intermediate thereof

Method used

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  • Eight-branch gold nano particle, preparation method, application and intermediate thereof
  • Eight-branch gold nano particle, preparation method, application and intermediate thereof
  • Eight-branch gold nano particle, preparation method, application and intermediate thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] 1.1 Preparation of nano gold seed solution with ligand A:

[0102] (1) Prepare 3.5mL of 0.14mol / L cetyltrimethylammonium bromide aqueous solution, 10mL of tetrachloroauric acid solution with concentration of 15mmol / L, and 15mL of sodium borohydride solution with concentration of 0.01mol / L ( An ice-water bath).

[0103] (2) Add 130μL of tetrachloroauric acid aqueous solution with a concentration of 15mmol / L to 3.5mL of 0.14mol / L cetyltrimethylammonium bromide aqueous solution, under magnetic stirring (1200rpm) and at room temperature , Adding 500μL of 0.01mol / L sodium borohydride aqueous solution, the color of the solution quickly changed from yellow to brown. After stirring for 2 minutes, place in a water bath at 25°C for later use.

[0104] The nano gold seed solution prepared by this method is about 100 nM with ligand A.

[0105] 1.2 Preparation of eight-branched gold nanoparticle solution

[0106] The steps of the eight-branched gold nanoparticle solution preparation method...

Embodiment 2

[0129] All operations are the same as in Example 1, the only difference is that the amount of nano gold seed solution with ligand A added to solution B is 1.0 μL (the molar volume concentration of nano gold seeds with ligand A in the reaction solution is 1.0 *10 -11 mol / L, the amount of deionized water is increased by 1.0 μL to ensure that the total volume of the system is exactly the same as the volume of the reaction solution in Example 1, and the size length * width of the obtained eight-branched gold nanoparticles is 22.8*11.4 nm.

Embodiment 3

[0131] All operations are the same as in Example 1, the only difference is that the amount of nano gold seed solution with ligand A added to solution B is 3.0 μL (the molar volume concentration of nano gold seeds with ligand A in the reaction solution is 3.0 *10 -11 mol / L, the amount of deionized water is reduced by 1.0 μL to ensure that the total volume of the system is exactly the same as the volume of the reaction solution in Example 1, and the size length*width of the obtained eight-branched gold nanoparticles is 15.8*12.6nm.

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Abstract

The invention discloses an eight-branch gold nano particle with ligand A, a preparation method, an application and an intermediate. The single arm length of each branch of the eight-branch gold nano particle is 10 nm-30 nm, and the single arm width is 5 nm-20 nm. The preparation method of the eight-branch gold nano particle is simple and mild, high in the reaction rate, high in the repeatability,and easy to be large-scale, and the prepared eight-branch gold nano particle with the ligand A has the advantages that the absorption spectrum peak is narrow, the intensity is high, the monodispersityis good, the appearance is controllable, and the photo-thermal performance and the photoacoustic performance are good.

Description

Technical field [0001] The invention discloses an eight-branched gold nano particle, a preparation method, an application and an intermediate thereof. Background technique, [0002] In the nanometer scale, metals exhibit outstanding and distinctive characteristics, making them outstanding in a wide range of research applications. Among them, gold nanoparticles have the characteristics of good biological inertness and easy surface modification, making them widely studied in the biological field. Just like other nanomaterials, the size and morphology of gold nanoparticles are two crucial parameters that are used to adjust the properties of the particles to meet different applications. In most cases, particles of different configurations have different physical and chemical properties, so the parameter of morphology is more versatile in adjusting the properties of particles. [0003] The branch-shaped gold nanoparticles have high specific surface area, sharp electromagnetic field en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00B82Y30/00C07F1/12
CPCB22F9/24B82Y40/00B82Y30/00C07F1/005
Inventor 刘堃常艺馨张宁宁陶幸福孙天盟张俊虎
Owner JILIN UNIV
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