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Anisotropic growth ...
Anisotropic growth of gold nanoparticles using cationic gemini surfactants: effects of structure variations in head and tail groups
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- Jain, T. (author)
- Köpenhamns universitet,University of Copenhagen
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- Tehrani, Ali, 1976 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Shekhar, Himanshu (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Crawford, Ross, 1990 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Johnson, E. (author)
- Köpenhamns universitet,University of Copenhagen
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- Norgaard, K. (author)
- Köpenhamns universitet,University of Copenhagen
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- Holmberg, Krister, 1946 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Erhart, Paul, 1978 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Moth-Poulsen, Kasper, 1978 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2014
- 2014
- English.
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In: Journal of Materials Chemistry C. - : Royal Society of Chemistry (RSC). - 2050-7526 .- 2050-7534. ; 2:6, s. 994-1003
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http://dx.doi.org/10...
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https://doi.org/10.1...
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Abstract
Subject headings
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- A library of gemini surfactants is employed to study surfactant directed anisotropic growth of gold nanoparticles. The surfactants are modified with respect to the length and type of the tails, as well as of the spacer group. By analyzing the structure of the anisotropic nanoparticles, it is possible to extract information on how the structure of the surfactants influences the anisotropic gold nanocrystal growth. We find that the tail length of the surfactants has a greater influence on the resulting nanoparticle aspect ratio compared to the chemical nature of the spacer group. While clear trends between the aspect ratio and the tail as well as spacer length remain elusive, we observe that surfactants with a critical micelle concentration of similar to 1 mM produce particles with the highest aspect ratio. A crystallographic analysis of nanorods obtained using gemini surfactants reveals that they grow along and are bound by {310} facets. This observation, which is specific for gemini surfactants, is explained by taking into account the preferential alignment of gemini surfactants with surface steps as suggested by electronic structure calculations.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
Keyword
- ALKANEDIYL-ALPHA
- AGGREGATION
- SEED-MEDIATED GROWTH
- OMEGA-BIS(DIMETHYLALKYLAMMONIUM BROMIDE) SURFACTANTS
- ASPECT-RATIO
- NANOGAPS
- ADSORPTION
- AQUEOUS-SOLUTION
- AU NANORODS
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Jain, T.
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Tehrani, Ali, 19 ...
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Shekhar, Himansh ...
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Crawford, Ross, ...
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Johnson, E.
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Norgaard, K.
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Holmberg, Kriste ...
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Erhart, Paul, 19 ...
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Moth-Poulsen, Ka ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Physical Chemist ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Nano technology
- Articles in the publication
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Journal of Mater ...
- By the university
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Chalmers University of Technology