Metal nanoparticle fluids with magnetically induced electrical switching properties
- Authors
- Kim, Younghoon; Cho, Jinhan
- Issue Date
- 2013
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- NANOSCALE, v.5, no.11, pp.4917 - 4922
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOSCALE
- Volume
- 5
- Number
- 11
- Start Page
- 4917
- End Page
- 4922
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/106395
- DOI
- 10.1039/c3nr00653k
- ISSN
- 2040-3364
- Abstract
- We report the successful preparation of solvent-free metal nanoparticle (NP) fluids with multiple-functionalities, such as rheological properties, magnetism, ionic conductivity, and electrical properties, allowing for facile synthesis and mass production. The gold nanoparticles (Au-NPs) used in this study were synthesized using tetraoctylammonium bromide (TOABr) in toluene and then directly phase-transferred to solvent-free low-molecular-weight (M-w) imidazolium-type ionic liquid media containing thiol groups (i.e., IL-SH). Magnetic metal fluids (i.e., MIL-SH-Au-NPs) were prepared by the addition of FeCl3 powder to metal fluids (i.e., IL-SH-Au-NPs). These fluids showed relatively high ionic and electrical conductivities compared with those of conventional metal NP fluids based on organic ILs with high M-w. Furthermore, it was demonstrated that these fluids could be used as electric switches operated using an external magnetic field in organic media.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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