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Heating-Induced Evolution of Thiolate-Encapsulated Gold Nanoparticles: A Strategy for Size and Shape Manipulations
Abstract
A heating treatment strategy for inducing size and shape change of composite nanoparticles in solutions is described. The composite nanoparticles are ∼2 nm gold cores encapsulated with alkanethiolate monolayers. The development of abilities in size and shape controls constitutes the motivation of this work. We demonstrated a remarkable evolution of the preformed particles in solutions toward monodispersed larger core sizes with well-defined and highly faceted morphologies. The particles thus evolved were encapsulated with the thiolate shells, and exhibited striking propensities of forming long-range ordered arrays. The morphological and structural evolutions were characterized using transmission electron microscopy, X-ray diffraction, UV−vis and infrared spectroscopies. Although temperature-driven crystal growth is known for nonencapsulated particles, the evolution of the thiolate-encapsulated nanoparticles in solutions into well-defined morphologies represents an intriguing example of temperature manipulations in size monodispersity and shape control.
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Cited by
Gold Nanomaterials at Work in Biomedicine
Yang, X., Yang, M., Pang, B., Vara, M., & Xia, Y. (2015) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00193 · Cited by 1,162
Size-Dependent Melting of Silica-Encapsulated Gold Nanoparticles
Dick, K., Dhanasekaran, T., Zhang, Z., & Meisel, D. (2002) · Journal of the American Chemical Society · doi:10.1021/ja017281a · Cited by 549
Hegmann, T., Qi, H., & Marx, V. M. (2007) · Journal of Inorganic and Organometallic Polymers and Materials · doi:10.1007/s10904-007-9140-5 · Cited by 396
Wanjala, B. N., Luo, J., Loukrakpam, R., Fang, B., Mott, D., Njoki, P. N., Engelhard, M., Naslund, H. R., Wu, J. K., Wang, L., et al. (2010) · Chemistry of Materials · doi:10.1021/cm101109e · Cited by 226
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Metadata
- Authors
- Maye, M. M., Zheng, W., Leibowitz, F. L., Ly, N. K., & Zhong, C.-J.
- Venue
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Published
- 1999-11-04
- Volume
- 16
- Issue
- 2
- Pages
- 490-497
- ISSN
- 0743-7463 (ISSN-L)
- 1520-5827
- OpenAlex
- W1971078151
- Cited by
- 321
- References
- 0
- FWCI
- 11.27
- Type
- journal article
- Language
- en
- Open access
- closed
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- Maye, M. M., Zheng, W., Leibowitz, F. L., Ly, N. K., & Zhong, C.-J. (2000). Heating-Induced Evolution of Thiolate-Encapsulated Gold Nanoparticles: A Strategy for Size and Shape Manipulations. Langmuir. https://doi.org/10.1021/la990892k
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