Biotemplated metal nanowires using hyperthermophilic protein filaments

Joseph M. Slocik, Sang Nyon Kim, Timothy A. Whitehead, Douglas S. Clark, Rajesh R. Naik

Research output: Research - peer-reviewArticle

  • 24 Citations

Abstract

An experiment was conducted to show that γ-prefoldin filamentous protein (γ-PFD) filaments serve as excellent templates for the synthesis of metal nanowires of defined length, varied nanoparticle composition, and conductive properties. Nanoparticle-coated γ-PFD filaments were synthesized by the addition of metal ions to the self-assembled filament at 25°C or at 80°C. The reduction of each metal and a distinct color change was observed within 2 h in the absence of the reductant, sodium borohydride. In the absence of protein, there was no visible color change associated with nanoparticle formation at 80°C, confirming the importance of the protein template. UV/vis spectroscopy revealed a broad absorption peak centered at 438nm and 545nm for silver and gold, respectively. Transmission electron microscopy(TEM) analysis showed a broad distribution of gold nanoparticles produced by γ-PFD at 80°C with sizes approaching 250nm.

LanguageEnglish (US)
Pages2038-2042
Number of pages5
JournalSmall
Volume5
Issue number18
DOIs
StatePublished - Sep 18 2009
Externally publishedYes

Profile

Nanowires
Metals
Proteins
Nanoparticles
prefoldin
Gold
Color
Reducing Agents
Ultraviolet spectroscopy
Silver
Metal ions
Transmission electron microscopy
Chemical analysis
Experiments
sodium borohydride
Transmission Electron Microscopy
Spectrum Analysis
Ions
Sodium

ASJC Scopus subject areas

  • Biomaterials
  • Engineering (miscellaneous)
  • Biotechnology
  • Medicine(all)

Cite this

Slocik, J. M., Kim, S. N., Whitehead, T. A., Clark, D. S., & Naik, R. R. (2009). Biotemplated metal nanowires using hyperthermophilic protein filaments. Small, 5(18), 2038-2042. DOI: 10.1002/smll.200900499

Biotemplated metal nanowires using hyperthermophilic protein filaments. / Slocik, Joseph M.; Kim, Sang Nyon; Whitehead, Timothy A.; Clark, Douglas S.; Naik, Rajesh R.

In: Small, Vol. 5, No. 18, 18.09.2009, p. 2038-2042.

Research output: Research - peer-reviewArticle

Slocik, JM, Kim, SN, Whitehead, TA, Clark, DS & Naik, RR 2009, 'Biotemplated metal nanowires using hyperthermophilic protein filaments' Small, vol 5, no. 18, pp. 2038-2042. DOI: 10.1002/smll.200900499
Slocik JM, Kim SN, Whitehead TA, Clark DS, Naik RR. Biotemplated metal nanowires using hyperthermophilic protein filaments. Small. 2009 Sep 18;5(18):2038-2042. Available from, DOI: 10.1002/smll.200900499
Slocik, Joseph M. ; Kim, Sang Nyon ; Whitehead, Timothy A. ; Clark, Douglas S. ; Naik, Rajesh R./ Biotemplated metal nanowires using hyperthermophilic protein filaments. In: Small. 2009 ; Vol. 5, No. 18. pp. 2038-2042
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