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Surface PEGylation and Ligand Exchange Chemistry of FePt Nanoparticles for Biological Applications
Abstract
FePt magnetic nanoparticles (MNPs) were functionalized with a mixed monolayer of poly(ethylene glycol)-terminated thiol and dopamine ligands. The resulting nanoparticles were soluble and stable in aqueous media, including water, ionic solutions, and cell culture medium. The surface thiol ligands are readily exchanged with other thiols bearing chain-end functionalities. MNPs featuring either a cationic or an anionic surface were synthesized by ligand exchange chemistry to afford ligand peripheries capable of binding biomolecules. Surface binding of cationic MNPs to DNA and anionic MNPs to chymotrypsin was enabled by incorporation of a charged functionality on the nanoparticle surface. This approach represents a general strategy to synthesize functionalized FePt nanoparticles that form stable solutions in water and facilitates the use of these magnetic FePt nanoparticles in biological applications.
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Cited by
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Sun, C., Lee, J. S. H., & Zhang, M. (2008) · Advanced Drug Delivery Reviews · doi:10.1016/j.addr.2008.03.018 · Cited by 2,594
Frey, N. A., Peng, S., Cheng, K., & Sun, S. (2009) · Chemical Society Reviews · doi:10.1039/b815548h · Cited by 1,200
Superparamagnetic Colloids: Controlled Synthesis and Niche Applications
Jeong, U., Teng, X., Wang, Y., Yang, H., & Xia, Y. (2007) · Advanced Materials · doi:10.1002/adma.200600674 · Cited by 982
Dong, A., Ye, X., Chen, J., Kang, Y., Gordon, T., Kikkawa, J. M., & Murray, C. B. (2011) · Journal of the American Chemical Society · doi:10.1021/ja108948z · Cited by 907
Superparamagnetic iron oxide nanoparticles: from preparations to in vivo MRI applications
Qiao, R., Yang, C., & Gao, M. (2009) · Journal of Materials Chemistry · doi:10.1039/b902394a · Cited by 685
Metadata
- Authors
- Hong, R., Fischer, N. O., Emrick, T., & Rotello, V. M.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2005-08-05
- Volume
- 17
- Issue
- 18
- Pages
- 4617-4621
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W2081951302
- Cited by
- 218
- References
- 0
- FWCI
- 11.81
- Type
- journal article
- Language
- en
- Open access
- closed
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- Hong, R., Fischer, N. O., Emrick, T., & Rotello, V. M. (2005). Surface PEGylation and Ligand Exchange Chemistry of FePt Nanoparticles for Biological Applications. Chemistry of Materials. https://doi.org/10.1021/cm0507819
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