Dog-bone-shaped gold nanocrystal preparing method

A gold nano, dog-bone-shaped technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of cumbersome and complicated operation process, and achieve good repeatability, simple operation, and reliability strong control effect
CN104841950AActive Publication Date: 2015-08-19UNIV OF JINAN
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF JINAN
Publication Date
2015-08-19

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Abstract

The invention discloses a dog-bone-shaped gold nanocrystal preparing method. The dog-bone-shaped gold nanocrystal preparing method includes the steps of adding an aqueous cetyl ammonium bromide solution in an aqueous chloroauric acid solution, adding a silver nitrate solution, mixing fully, adding ascorbic acid, and mixing with stirring to obtain a growth solution; mixing the aqueous cetyl ammonium bromide solution with the aqueous chloroauric acid solution, adding a sodium borohydride solution, and stirring until the mixed solution turns into claybank so as to obtain a seed solution; adding the seed solution in the growth solution, mixing with stirring, and standing for growing to obtain dog-bone-shaped gold nanocrystals. The dog-bone-shaped gold nanocrystal preparing method has the advantages of easily-available raw materials, simplicity in operation, good repeatability, low cost, high controllability and capabilities of obtaining stable and efficient dog-bone-shaped gold nanocrystal and obtaining different sizes of dog-bone-shaped gold nanocrystals by means of reacting condition adjustment, has important application value for synthesis of large-scale dog-bone-shaped gold nanocrystals and is of important guiding significance to gold nanocrystal preparing method research.
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Description

technical field

[0001] The invention relates to a method for preparing rod-like gold nanocrystals, in particular to a method for preparing dogbone-like gold nanocrystals. Background technique

[0002] In recent years, anisotropic gold nanorods have attracted extensive attention due to their unique tunable optical properties and geometric structures, which have potential application value in biological analysis. Gold nanorods are rod-shaped gold nanoparticles with a size ranging from a few nanometers to hundreds of nanometers. As a noble metal material, gold has very stable chemical properties. Gold nanomaterials inherit the properties of its bulk materials and have relatively stable but very rich physical and chemical properties. Gold nanorods have continuously adjustable surface plasmon resonance absorption peaks from the visible to the near-infrared region with the change of aspect ratio, extremely high surface electric field strength enhancement effect, great optical abs...

Claims

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