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Modification of Gold Nanorods Using Phosphatidylcholine to Reduce Cytotoxicity
Abstract
Hexadecyltrimethylammonium bromide (CTAB), which is necessary for the preparation of gold nanorods (NRs), was extracted from a NR solution into a chloroform phase containing phosphatidylcholine (PC). After three extractions, the zeta potential of the NRs remained positive, but its magnitude decreased from +67 +/- 1 to +15 +/- 1 mV. Transmission electron microscopy and energy-dispersive X-ray analysis indicated that the NRs were passivated with PC. The PC layer on the NR surface contributed to the prevention of NR aggregation. The PC-passivated NRs showed low cytotoxicity in comparison with twice-centrifuged NRs. It was shown that a negligible amount of CTAB was dispersed in the NR solution after the extraction. The extraction using a chloroform phase containing PC was found to be a convenient way of replacing the CTAB with alternative capping agents such as PC. This is a key technique for preparing functional NRs that can have practical applications.
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Cites
Diffusion of univalent ions across the lamellae of swollen phospholipids
Bangham, A. D., Standish, M. M., & Watkins, J. C. (1965) · Journal of Molecular Biology · doi:10.1016/s0022-2836(65)80093-6 · Cited by 4,664
Cited by
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Lee, C. H., Tian, L., & Singamaneni, S. (2010) · ACS Applied Materials & Interfaces · doi:10.1021/am1009875 · Cited by 365
Roshani, M., Rezaian-Isfahni, A., Lotfalizadeh, M. H., Khassafi, N., Abadi, M. H. J. N., & Nejati, M. (2023) · Cancer Cell International · doi:10.1186/s12935-023-03115-1 · Cited by 84
Sustainable Nanomaterials in Wastewater Remediation
Mitra, A. K., & Nayak, S. (2025) · Advances in Wastewater Research · doi:10.1007/978-981-96-3908-3_7 · Cited by 4
Metadata
- Authors
- Takahashi, H., Niidome, Y., Niidome, T., Kaneko, K., Kawasaki, H., & Yamada, S.
- Venue
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-11-24
- Volume
- 22
- Issue
- 1
- Pages
- 2-5
- ISSN
- 0743-7463 (ISSN-L)
- 1520-5827
- OpenAlex
- W2074052341
- Cited by
- 426
- References
- 1
- FWCI
- 10.53
- Type
- journal article
- Language
- en
- Open access
- closed
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- Takahashi, H., Niidome, Y., Niidome, T., Kaneko, K., Kawasaki, H., & Yamada, S. (2006). Modification of Gold Nanorods Using Phosphatidylcholine to Reduce Cytotoxicity. Langmuir. https://doi.org/10.1021/la0520029
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
