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Synthesis and Characterization of Hydrophobic, Organically-Soluble Gold Nanocrystals Functionalized with Primary Amines
Abstract
We report on the synthesis and characterization of 25−70 Å diameter amine-capped gold nanocrystals. In particular, we show how these particles can be prepared by a simple procedure and confirm the particle composition (including the identity of the amine surface passivant) through several materials characterization techniques that include infrared spectroscopy, nuclear magnetic resonance spectroscopy, ultraviolet−visible spectroscopy, mass spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, X-ray diffraction analysis, differential scanning calorimetry, thermogravimetric analysis, and elemental analysis. All physical characterizations are consistent with a charge−neutral amine/gold surface interaction described by a weak covalent bond. The stability of the particles appears to be largely kinetic, rather than thermodynamic, in nature. Comparison of these nanocrystals to amines adsorbed onto bulk Au surfaces indicates that the stability of the nanocrystal/amine system is a finite-size effect.
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Cites
Spectrometric Identification of Organic Compounds
Silverstein, R. M., & Bassler, G. C. (1962) · Journal of Chemical Education · doi:10.1021/ed039p546 · Cited by 14,272
Cited by
Synthesis and Characterization of Monodisperse Nanocrystals and Close-Packed Nanocrystal Assemblies
Murray, C. B., Kagan, C. R., & Bawendi, M. G. (2000) · Annual Review of Materials Science · doi:10.1146/annurev.matsci.30.1.545 · Cited by 4,353
Shape Control of Colloidal Metal Nanocrystals
Tao, A. R., Habas, S., & Yang, P. (2008) · Small · doi:10.1002/smll.200701295 · Cited by 2,408
Cutler, J. I., Auyeung, E., & Mirkin, C. A. (2012) · Journal of the American Chemical Society · doi:10.1021/ja209351u · Cited by 1,119
Tsunoyama, H., Sakurai, H., Ichikuni, N., Negishi, Y., & Tsukuda, T. (2004) · Langmuir · doi:10.1021/la0478189 · Cited by 373
Antibacterial efficacy of aminoglycosidic antibiotics protected gold nanoparticles—A brief study
Nirmala Grace, A., & Pandian, K. (2007) · Colloids and Surfaces A: Physicochemical and Engineering Aspects · doi:10.1016/j.colsurfa.2006.10.024 · Cited by 317
Metadata
- Authors
- Leff, D. V., Brandt, L., & Heath, J. R.
- Venue
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Published
- 1996-01-01
- Volume
- 12
- Issue
- 20
- Pages
- 4723-4730
- ISSN
- 0743-7463 (ISSN-L)
- 1520-5827
- OpenAlex
- W1989860007
- Cited by
- 924
- References
- 1
- FWCI
- 9.28
- Type
- journal article
- Language
- en
- Open access
- closed
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