Synthesis, assembly, and functionalization of polymer-coated ferromagnetic nanoparticles

Bryan D. Korth, Pei Yuin Keng, Inbo Shim, Chuanbing Tang, Tomasz Kowalewski, Dong-Chul Pyun

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A novel, robust synthetic methodology has been developed to prepare and functionalize well-defined ferromagnetic cobalt nanoparticles. Polystyrene (PS) surfactants of precise molar mass were prepared using controlled radical polymerization and used in the synthesis of metallic cobalt nanoparticles by the thermolysis of dicobaltoctacarbonyl (Co2(CO)8). Transmission electron microscopy (TEM), scanning probe microscopy (AFM, MFM), x-ray diffraction (XRD) and vibrating sample magnometry (VSM) confirmed that uniform (D = 15 nm ± 1.5 nm, PS shell = 2 nm), face centered cubic (fcc) cobalt nanocrystals that were prepared and ferromagnetic at room temperature (Ms = 38 emu/g, Hc = 100 Oe). A ligand exchange strategy to functionalize ferromagnetic nanoparticles was developed with functional polymeric surfactants.

Original languageEnglish (US)
Title of host publicationACS Symposium Series
PublisherAmerican Chemical Society
Pages272-285
Number of pages14
Volume996
ISBN (Print)9780841269699
DOIs
StatePublished - Sep 19 2008

Publication series

NameACS Symposium Series
Volume996
ISSN (Print)00976156
ISSN (Electronic)19475918

Fingerprint

Cobalt
Polymers
Polystyrenes
Nanoparticles
Surface-Active Agents
Surface active agents
Scanning probe microscopy
Thermolysis
Molar mass
Free radical polymerization
Nanocrystals
Diffraction
Ligands
Transmission electron microscopy
X rays
Temperature

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Korth, B. D., Keng, P. Y., Shim, I., Tang, C., Kowalewski, T., & Pyun, D-C. (2008). Synthesis, assembly, and functionalization of polymer-coated ferromagnetic nanoparticles. In ACS Symposium Series (Vol. 996, pp. 272-285). (ACS Symposium Series; Vol. 996). American Chemical Society. https://doi.org/10.1021/bk-2008-0996.ch020

Synthesis, assembly, and functionalization of polymer-coated ferromagnetic nanoparticles. / Korth, Bryan D.; Keng, Pei Yuin; Shim, Inbo; Tang, Chuanbing; Kowalewski, Tomasz; Pyun, Dong-Chul.

ACS Symposium Series. Vol. 996 American Chemical Society, 2008. p. 272-285 (ACS Symposium Series; Vol. 996).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Korth, BD, Keng, PY, Shim, I, Tang, C, Kowalewski, T & Pyun, D-C 2008, Synthesis, assembly, and functionalization of polymer-coated ferromagnetic nanoparticles. in ACS Symposium Series. vol. 996, ACS Symposium Series, vol. 996, American Chemical Society, pp. 272-285. https://doi.org/10.1021/bk-2008-0996.ch020
Korth BD, Keng PY, Shim I, Tang C, Kowalewski T, Pyun D-C. Synthesis, assembly, and functionalization of polymer-coated ferromagnetic nanoparticles. In ACS Symposium Series. Vol. 996. American Chemical Society. 2008. p. 272-285. (ACS Symposium Series). https://doi.org/10.1021/bk-2008-0996.ch020
Korth, Bryan D. ; Keng, Pei Yuin ; Shim, Inbo ; Tang, Chuanbing ; Kowalewski, Tomasz ; Pyun, Dong-Chul. / Synthesis, assembly, and functionalization of polymer-coated ferromagnetic nanoparticles. ACS Symposium Series. Vol. 996 American Chemical Society, 2008. pp. 272-285 (ACS Symposium Series).
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