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Temperature-induced control of aspect ratio of gold nanorods.
- Source :
- Journal of Vacuum Science & Technology: Part A-Vacuums, Surfaces & Films; Jul2006, Vol. 24 Issue 4, p1323-1326, 4p, 4 Black and White Photographs
- Publication Year :
- 2006
-
Abstract
- Aspect ratio of gold nanorods can be controlled by simply adjusting the reaction temperature in the seed-mediated synthesis of the nanorods. The gold nanorods were synthesized by the injection of gold nanoparticle seeds of around 4 nm in diameter into a reaction mixture containing hydrogen tetrachloroaurate, hexadecyltrimethylammonium bromide, and ascorbic acid. Average aspect ratio of the resulting nanorod increases from 1 to about 40 with decreasing the reaction temperature from 315 to 276 K, which can be attributed to the temperature-induced change in the shape of the micellar templates. For further understanding of the growth mechanism, silver nanoparticles were also used as seeds in the preparation of the gold nanorod. [ABSTRACT FROM AUTHOR]
- Subjects :
- ASPECT ratio (Aerofoils)
GOLD
NANOPARTICLES
CHEMICAL reactions
SILVER
Subjects
Details
- Language :
- English
- ISSN :
- 07342101
- Volume :
- 24
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Journal of Vacuum Science & Technology: Part A-Vacuums, Surfaces & Films
- Publication Type :
- Academic Journal
- Accession number :
- 23073873
- Full Text :
- https://doi.org/10.1116/1.2198864