Metal nanoparticle fluids with magnetically induced electrical switching properties

Younghoon Kim, Jinhan Cho

Research output: Contribution to journalArticle

3 Citations (Scopus)

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 (AuNPs) used in this study were synthesized using tetraoctylammonium bromide (TOABr) in toluene and then directly phase-transferred to solvent-free low-molecular-weight (Mw) imidazolium-type ionic liquid media containing thiol groups (i.e., IL-SH). Magnetic metal fluids (i.e., MIL-SH-AuNPs) were prepared by the addition of FeCl3 powder to metal fluids (i.e., IL-SH-AuNPs). These fluids showed relatively high ionic and electrical conductivities compared with those of conventional metal NP fluids based on organic ILs with high Mw. Furthermore, it was demonstrated that these fluids could be used as electric switches operated using an external magnetic field in organic media.

Original languageEnglish
Pages (from-to)4917-4922
Number of pages6
JournalNanoscale
Volume5
Issue number11
DOIs
Publication statusPublished - 2013 Jun 7

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Metal nanoparticles
Fluids
Ionic conductivity
Electric switches
Metals
Molecular weight
Ionic Liquids
Toluene
Magnetism
Ionic liquids
Sulfhydryl Compounds
Gold
Powders
Electric properties
Magnetic fields
Nanoparticles

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Metal nanoparticle fluids with magnetically induced electrical switching properties. / Kim, Younghoon; Cho, Jinhan.

In: Nanoscale, Vol. 5, No. 11, 07.06.2013, p. 4917-4922.

Research output: Contribution to journalArticle

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