Two-step synthesis of high aspect ratio gold nanorods
نویسندگان
چکیده
منابع مشابه
Synthesis and manipulation of high aspect ratio gold nanorods grown directly on surfaces.
Here we describe the synthesis of Au nanorods directly on glass surfaces using seed-mediated deposition of Au from AuCl4- onto surface-attached 3-5 nm diameter Au nanoparticles (AuNPs) in the presence of cetyltrimethylammonium bromide (CTAB). The average length (200 nm to 1.2 microm) and aspect ratio (6-22) of the nanorods increases with increasing AuCl4- concentration. Short, low aspect ratio ...
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Because physical and chemical properties of nanostructures strongly depend on their shape, it is of great importance to find either synthetic or separation techniques that can produce objects of a particular shape in a pure state. This manuscript describes a solution to a long standing problem of separating 2D platelets from 1D nanorods. The key aspect of our approach relies on the partial diss...
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Tight-controlling of the aspect ratios (ARs) and fine-tailoring of the crystallographic facets of gold nanorods (GNRs) are critical for their further applications inmaterial, biological, andmedical fields. However, the highyield synthesis of GNRs with certain facets and ARs is still challenging because it requires grasping of various components and complicated interactions in the reaction syste...
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Electrochemically prepared Au nanorods were used as seeds for the overgrowth of thin shells of gold, silver, and palladium by using a mild reducing agent, ascorbic acid, in the presence of surfactants at ambient condition. The unique crystal facets of the starting nanorods results in anisotropic crystal overgrowth. The overgrowth rates along different crystallographical directions can be furthe...
متن کاملPhotochemical synthesis of gold nanorods.
Gold nanorods have been synthesized by photochemically reducing gold ions within a micellar solution. The aspect ratio of the rods can be controlled with the addition of silver ions. This process reported here is highly promising for producing uniform nanorods, and more importantly it will be useful in resolving the growth mechanism of anisotropic metal nanoparticles due to its simplicity and t...
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ژورنال
عنوان ژورنال: Open Chemistry
سال: 2006
ISSN: 2391-5420
DOI: 10.1007/s11532-005-0012-y