Growth Kinetic of a Rod-Shaped Metal Nanocrystal
| dc.contributor.author | Henkel, Andreas | |
| dc.contributor.author | Schubert, Olaf | |
| dc.contributor.author | Plech, Anton | |
| dc.contributor.author | Sönnichsen, Carsten | |
| dc.date.accessioned | 2022-07-28T07:08:09Z | |
| dc.date.available | 2022-07-28T07:08:09Z | |
| dc.date.issued | 2009 | eng |
| dc.description.abstract | The crystallization dynamics in wet-chemical synthesis is the key parameter controlling nanoparticle morphology, which determines the frequency of the optical plasmon resonance in metal nanoparticles. Despite several in situ (dark-field microscopy) and ex situ (electron microscopy) studies of metal nanoparticle growth, the anisotropic growth kinetics are not well-understood mainly because the crystallization is a nonequilibrium process. Using simultaneous optical spectroscopy and time-resolved small-angle X-ray scattering at a synchrotron X-ray source, we directly monitor the anisotropic growth kinetics of gold and gold-copper nanorods and extract the growth parameters for both crystal directions (along the rod’s long and short axes) independently. We find a crossover from 1D to 3D growth modes at 8 and 12 min, respectively, where the nanorods attain their maximum aspect ratio. The growth model explains and predicts this crossover point without the need of a switch for the growth mode and allows for the fine-tuning of the particle shapes. | eng |
| dc.description.version | published | de |
| dc.identifier.doi | 10.1021/jp810979r | eng |
| dc.identifier.uri | https://kops.uni-konstanz.de/handle/123456789/58194 | |
| dc.language.iso | eng | eng |
| dc.subject.ddc | 530 | eng |
| dc.title | Growth Kinetic of a Rod-Shaped Metal Nanocrystal | eng |
| dc.type | JOURNAL_ARTICLE | de |
| dspace.entity.type | Publication | |
| kops.citation.bibtex | @article{Henkel2009Growt-58194,
year={2009},
doi={10.1021/jp810979r},
title={Growth Kinetic of a Rod-Shaped Metal Nanocrystal},
number={24},
volume={113},
issn={1932-7447},
journal={Journal of Physical Chemistry C},
pages={10390--10394},
author={Henkel, Andreas and Schubert, Olaf and Plech, Anton and Sönnichsen, Carsten}
} | |
| kops.citation.iso690 | HENKEL, Andreas, Olaf SCHUBERT, Anton PLECH, Carsten SÖNNICHSEN, 2009. Growth Kinetic of a Rod-Shaped Metal Nanocrystal. In: Journal of Physical Chemistry C. American Chemical Society (ACS). 2009, 113(24), pp. 10390-10394. ISSN 1932-7447. eISSN 1932-7455. Available under: doi: 10.1021/jp810979r | deu |
| kops.citation.iso690 | HENKEL, Andreas, Olaf SCHUBERT, Anton PLECH, Carsten SÖNNICHSEN, 2009. Growth Kinetic of a Rod-Shaped Metal Nanocrystal. In: Journal of Physical Chemistry C. American Chemical Society (ACS). 2009, 113(24), pp. 10390-10394. ISSN 1932-7447. eISSN 1932-7455. Available under: doi: 10.1021/jp810979r | eng |
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<dcterms:abstract xml:lang="eng">The crystallization dynamics in wet-chemical synthesis is the key parameter controlling nanoparticle morphology, which determines the frequency of the optical plasmon resonance in metal nanoparticles. Despite several in situ (dark-field microscopy) and ex situ (electron microscopy) studies of metal nanoparticle growth, the anisotropic growth kinetics are not well-understood mainly because the crystallization is a nonequilibrium process. Using simultaneous optical spectroscopy and time-resolved small-angle X-ray scattering at a synchrotron X-ray source, we directly monitor the anisotropic growth kinetics of gold and gold-copper nanorods and extract the growth parameters for both crystal directions (along the rod’s long and short axes) independently. We find a crossover from 1D to 3D growth modes at 8 and 12 min, respectively, where the nanorods attain their maximum aspect ratio. The growth model explains and predicts this crossover point without the need of a switch for the growth mode and allows for the fine-tuning of the particle shapes.</dcterms:abstract>
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| kops.sourcefield | Journal of Physical Chemistry C. American Chemical Society (ACS). 2009, <b>113</b>(24), pp. 10390-10394. ISSN 1932-7447. eISSN 1932-7455. Available under: doi: 10.1021/jp810979r | deu |
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| kops.sourcefield.plain | Journal of Physical Chemistry C. American Chemical Society (ACS). 2009, 113(24), pp. 10390-10394. ISSN 1932-7447. eISSN 1932-7455. Available under: doi: 10.1021/jp810979r | eng |
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