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Coupling Agent Effect on Magnetic Properties of Functionalized Magnetite-Based Nanoparticles
Abstract
The effect of surface inorganic−organic interactions on magnetic and structural properties of iron oxide magnetic nanoparticles functionalized by lipophilic stilbene molecules has been investigated. The molecules have been grafted through either phosphonate or carboxylate coupling agents. Mössbauer spectra recorded at 300 and 77K suggest a global composition of Fe 2.82 O 4 for the two types of functionalization. Complementary in-field Mössbauer and SQUID measurements have demonstrated that the nanoparticles consist in a magnetite core surrounded by an oxidized layer. The oxidized shell exhibits a spin canting in the carboxylate case leading to a decrease of the net magnetization of the oxide nanoparticle. No canting occurs in the phosphonate case, and the magnetic properties are therefore preserved. The magnetic properties thus depend on the coupling agent, e.g., surface interactions. This result is of primary importance to tune the magnetic properties of functionalized nanoparticles for biomedical and high density storage media applications.
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Cites
Oleic acid coating on the monodisperse magnetite nanoparticles
Zhang, L., He, R., & Gu, H.-C. (2006) · Applied Surface Science · doi:10.1016/j.apsusc.2006.05.023 · Cited by 994
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Fundamentals and application of magnetic particles in cell isolation and enrichment: a review
Plouffe, B. D., Murthy, S. K., & Lewis, L. H. (2015) · Reports on Progress in Physics · doi:10.1088/0034-4885/78/1/016601 · Cited by 334
Hu, F., Jia, Q., Li, Y., & Gao, M. (2011) · Nanotechnology · doi:10.1088/0957-4484/22/24/245604 · Cited by 147
Drug releasing nanoplatforms activated by alternating magnetic fields
Mertz, D., Sandre, O., & Bégin-Colin, S. (2017) · Biochimica et Biophysica Acta (BBA) - General Subjects · doi:10.1016/j.bbagen.2017.02.025 · Cited by 119
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Metadata
- Authors
- Daou, T. J., Grenèche, J. M., Pourroy, G., Buathong, S., Derory, A., Ulhaq-Bouillet, C., Donnio, B., Guillon, D., & Begin-Colin, S.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-08-22
- Volume
- 20
- Issue
- 18
- Pages
- 5869-5875
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W2005769369
- Cited by
- 322
- References
- 1
- FWCI
- 10.61
- Type
- journal article
- Language
- en
- Open access
- closed
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- Daou, T. J., Grenèche, J. M., Pourroy, G., Buathong, S., Derory, A., Ulhaq-Bouillet, C., Donnio, B., Guillon, D., & Begin-Colin, S. (2008). Coupling Agent Effect on Magnetic Properties of Functionalized Magnetite-Based Nanoparticles. Chemistry of Materials. https://doi.org/10.1021/cm801405n
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