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Corrosion-Protected Hybrid Nanoparticles

2017

Article

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Nanoparticles composed of functional materials hold great promise for applications due to their unique electronic, optical, magnetic, and catalytic properties. However, a number of functional materials are not only difficult to fabricate at the nanoscale, but are also chemically unstable in solution. Hence, protecting nanoparticles from corrosion is a major challenge for those applications that require stability in aqueous solutions and biological fluids. Here, this study presents a generic scheme to grow hybrid 3D nanoparticles that are completely encapsulated by a nm thick protective shell. The method consists of vacuum-based growth and protection, and combines oblique physical vapor deposition with atomic layer deposition. It provides wide flexibility in the shape and composition of the nanoparticles, and the environments against which particles are protected. The work demonstrates the approach with multifunctional nanoparticles possessing ferromagnetic, plasmonic, and chiral properties. The present scheme allows nanocolloids, which immediately corrode without protection, to remain functional, at least for a week, in acidic solutions.

Author(s): Jeong, Hyeon-Ho and Alarcón-Correa, Mariana and Mark, Andrew G. and Son, Kwanghyo and Lee, Tung-Chun and Fischer, Peer
Journal: Advanced Science
Pages: 1700234--n/a
Year: 2017
Month: September
Day: 15

Department(s): Micro, Nano, and Molecular Systems
Bibtex Type: Article (article)

DOI: 10.1002/advs.201700234
Note: 1700234
State: Published
URL: http://dx.doi.org/10.1002/advs.201700234

BibTex

@article{ADVS:ADVS409,
  title = {Corrosion-Protected Hybrid Nanoparticles},
  author = {Jeong, Hyeon-Ho and Alarcón-Correa, Mariana and Mark, Andrew G. and Son, Kwanghyo and Lee, Tung-Chun and Fischer, Peer},
  journal = {Advanced Science},
  pages = {1700234--n/a},
  month = sep,
  year = {2017},
  note = {1700234},
  url = {http://dx.doi.org/10.1002/advs.201700234},
  month_numeric = {9}
}