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Magnetomicelles: Composite Nanostructures from Magnetic Nanoparticles and Cross-Linked Amphiphilic Block Copolymers
Abstract
We report the synthesis, characterization, and covalent surface chemistry of "magnetomicelles", cross-linked, amphiphilic block-copolymer micelles that encapsulate superparamagnetic iron oxide nanoparticles. Because these composite nanostructures assemble spontaneously from solution by simultaneous desolvation of nanoparticle and amphiphilic poly(styrene(250)-block-acrylic acid(13)) components, explicit surface functionalization of the particles is not required, and the encapsulation method was applied to different magnetic nanoparticle sizes and compositions. TEM images of the magnetomicelles illustrated that the number of encapsulated particles could be dictated rationally by synthetic conditions. The magnetic properties of the particles were characterized by SQUID magnetometry and followed the general Langevin magnetic model for superparamagnetic materials. The micellar shells of these particles were functionalized using covalent chemistry that would not ordinarily be possible on the magnetic particle surface. As a result, this noncovalent approach provides a new route to technological applications of hydrophobic magnetic nanomaterials that lack appropriate conjugate surface chemistry.
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Citations
Cited by
Directing the self-assembly of block copolymers
Darling, S. B. (2007) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2007.05.004 · Cited by 1,019
Thermo-sensitive polymeric micelles based on poly (N-isopropylacrylamide) as drug carriers
Wei, H., Cheng, S.-X., Zhang, X.-Z., & Zhuo, R.-X. (2009) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2009.05.002 · Cited by 718
Organic Phase Syntheses of Magnetic Nanoparticles and Their Applications
Wu, L., Mendoza-Garcia, A., Li, Q., & Sun, S. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00687 · Cited by 601
Thermodynamics versus Kinetics in Nanosynthesis
Wang, Y., He, J., Liu, C., Chong, W. H., & Chen, H. (2015) · Angewandte Chemie International Edition · doi:10.1002/anie.201402986 · Cited by 497
Hydrophobic Interactions Modulate Self-Assembly of Nanoparticles
Sánchez-Iglesias, A., Grzelczak, M., Altantzis, T., Goris, B., Pérez-Juste, J., Bals, S., Van Tendeloo, G., Donaldson, S. H., Chmelka, B. F., Israelachvili, J. N., et al. (2012) · ACS Nano · doi:10.1021/nn3047605 · Cited by 435
Metadata
- Authors
- Kim, B.-S., Qiu, J.-M., Wang, J.-P., & Taton, T. A.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-09-10
- Volume
- 5
- Issue
- 10
- Pages
- 1987-1991
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2062848331
- Cited by
- 284
- References
- 0
- FWCI
- 12.31
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kim, B.-S., Qiu, J.-M., Wang, J.-P., & Taton, T. A. (2005). Magnetomicelles: Composite Nanostructures from Magnetic Nanoparticles and Cross-Linked Amphiphilic Block Copolymers. Nano Letters. https://doi.org/10.1021/nl0513939
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