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Eight-branched gold nanoparticles, preparation method, application and intermediate thereof

A gold nanoparticle and nano-gold technology are applied in the fields of eight-branched gold nanoparticles, preparation, application and intermediates thereof, and can solve the problem of uneven size of branched gold nanoparticles, low yield of branched gold nanoparticles and uncontrollable appearance of branched gold nanoparticles. and other problems, to achieve the effect of good monodispersity, controllable morphology, repeatability and easy scale.

Active Publication Date: 2022-01-07
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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-branched gold nanoparticles, preparation method, application and intermediate thereof
  • Eight-branched gold nanoparticles, preparation method, application and intermediate thereof
  • Eight-branched gold nanoparticles, preparation method, application and intermediate thereof

Examples

Experimental program
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Effect test

Embodiment 1

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

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

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

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

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

[0106...

Embodiment 2

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

Embodiment 3

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

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Abstract

The invention discloses an eight-branched gold nanoparticle with a ligand A, a preparation method, an application and an intermediate. The single arm length of each branch of the eight-branched gold nanoparticles of the present invention is 10nm-30nm, and the single-arm width is 5nm-20nm. The preparation method of the eight-branched gold nanoparticles is simple and gentle, the reaction rate is fast, the repeatability is high and It is easy to scale, and the prepared eight-branched gold nanoparticles with ligand A have narrow absorption spectrum peaks, high intensity, good monodispersity, controllable morphology, and good photothermal and photoacoustic properties.

Description

technical field [0001] The invention discloses an eight-branched gold nanoparticle, a preparation method, an application and an intermediate thereof. Background technique [0002] At the nanoscale, metals exhibit distinctive and excellent properties that make 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. Like other nanomaterials, the size and shape of gold nanoparticles are two crucial parameters, which are used to tune the properties of the particles to meet different applications. In most cases, particles with different configurations have different physicochemical properties, so the morphology parameter is more general in adjusting particle properties. [0003] Branch-like gold nanoparticles have high specific surface area, tip electromagnetic field enhancement, unique surface plasmon resonan...

Claims

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Application Information

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Patent Type & Authority Patents(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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