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Stable Colloidal Dispersions of Fullerenes in Polar Organic Solvents
Abstract
Colloidal dispersions of C60 and C70 were prepared by simply mixing a fullerene solution in a good solvent with a poor polar organic solvent for fullerenes. The process was very easy and fast and the formation of particles with average diameter in the colloidal range was detected immediately after the components were mixed. The formation and the properties of the fullerene particles were studied mainly with dynamic light scattering and high-resolution transmission electron microscopy. The most interesting findings are the long-term colloid stability of the samples in the absence of any stabilizers, the relatively narrow size distribution, and the different average sizes of the particles formed by C60, C70, and their mixtures. The influence of various factors such as fullerene concentration, mixing procedure, solvent properties, and C60/C70 ratio was investigated. It is shown that the smaller particles are formed when the total fullerene concentration in the good solvent is decreased and that the fullerene particles have crystalline structure. The measured negative values for the electrophoretic mobility of the particles suggest that fullerene dispersions in polar organic solvents are stabilized by repulsive electrostatic interactions.
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Cites
An Algorithm for Least-Squares Estimation of Nonlinear Parameters
Marquardt, D. W. (1963) · Journal of the Society for Industrial and Applied Mathematics · doi:10.1137/0111030 · Cited by 30,728
Cited by
C60 in Water: Nanocrystal Formation and Microbial Response
Fortner, J. D., Lyon, D. Y., Sayes, C. M., Boyd, A. M., Falkner, J. C., Hotze, E. M., Alemany, L. B., Tao, Y. J., Guo, W., Ausman, K. D., et al. (2005) · Environmental Science & Technology · doi:10.1021/es048099n · Cited by 666
Stabilization and dispersion of carbon nanomaterials in aqueous solutions: A review
Al-Hamadani, Y. A. J., Chu, K. H., Son, A., Heo, J., Her, N., Jang, M., Park, C. M., & Yoon, Y. (2015) · Separation and Purification Technology · doi:10.1016/j.seppur.2015.11.002 · Cited by 109
Metadata
- Authors
- Alargova, R. G., Deguchi, S., & Tsujii, K.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2001-10-09
- Volume
- 123
- Issue
- 43
- Pages
- 10460-10467
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W1989401483
- Cited by
- 229
- References
- 1
- FWCI
- 4.55
- Type
- journal article
- Language
- en
- Open access
- closed
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- Alargova, R. G., Deguchi, S., & Tsujii, K. (2001). Stable Colloidal Dispersions of Fullerenes in Polar Organic Solvents. Journal of the American Chemical Society. https://doi.org/10.1021/ja010202a
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