Abstract
Gold nanocubes, octahedra, and rhombic dodecahedra with roughly two sets of particle sizes have been successfully synthesized via a seed-mediated growth approach. All six samples were analyzed for comparative surface-enhanced Raman scattering (SERS) activity. All of these Au nanostructures were found to yield strong enhancement at a thiophenol concentration of 10-7 M and are excellent SERS substrates. Rhombic dodecahedra with a rhombus edge length of 32 nm showed significantly better enhancement than the other samples and can reach a detection limit of 10-8 M. Simulations of the binding energies of thiophenol on the different faces of gold and electric near-field intensities of these nanocrystals have been performed to evaluate the experimental results. Superior SERS activity of these nanocrystals can be expected toward the detection of many other molecules.
| Original language | English |
|---|---|
| Pages (from-to) | 8106-8111 |
| Number of pages | 6 |
| Journal | Inorganic Chemistry |
| Volume | 50 |
| Issue number | 17 |
| DOIs | |
| Publication status | Published - 2011 Sep 5 |
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All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Inorganic Chemistry
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A comparative study of gold nanocubes, octahedra, and rhombic dodecahedra as highly sensitive SERS substrates. / Wu, Hsin Lun; Tsai, Huei Ru; Hung, Yun Ting; Lao, Ka Un; Liao, Ching Wen; Chung, Pei Ju; Huang, Jer Shing; Chen, I. Chia; Huang, Michael H.
In: Inorganic Chemistry, Vol. 50, No. 17, 05.09.2011, p. 8106-8111.Research output: Contribution to journal › Article
TY - JOUR
T1 - A comparative study of gold nanocubes, octahedra, and rhombic dodecahedra as highly sensitive SERS substrates
AU - Wu, Hsin Lun
AU - Tsai, Huei Ru
AU - Hung, Yun Ting
AU - Lao, Ka Un
AU - Liao, Ching Wen
AU - Chung, Pei Ju
AU - Huang, Jer Shing
AU - Chen, I. Chia
AU - Huang, Michael H.
PY - 2011/9/5
Y1 - 2011/9/5
N2 - Gold nanocubes, octahedra, and rhombic dodecahedra with roughly two sets of particle sizes have been successfully synthesized via a seed-mediated growth approach. All six samples were analyzed for comparative surface-enhanced Raman scattering (SERS) activity. All of these Au nanostructures were found to yield strong enhancement at a thiophenol concentration of 10-7 M and are excellent SERS substrates. Rhombic dodecahedra with a rhombus edge length of 32 nm showed significantly better enhancement than the other samples and can reach a detection limit of 10-8 M. Simulations of the binding energies of thiophenol on the different faces of gold and electric near-field intensities of these nanocrystals have been performed to evaluate the experimental results. Superior SERS activity of these nanocrystals can be expected toward the detection of many other molecules.
AB - Gold nanocubes, octahedra, and rhombic dodecahedra with roughly two sets of particle sizes have been successfully synthesized via a seed-mediated growth approach. All six samples were analyzed for comparative surface-enhanced Raman scattering (SERS) activity. All of these Au nanostructures were found to yield strong enhancement at a thiophenol concentration of 10-7 M and are excellent SERS substrates. Rhombic dodecahedra with a rhombus edge length of 32 nm showed significantly better enhancement than the other samples and can reach a detection limit of 10-8 M. Simulations of the binding energies of thiophenol on the different faces of gold and electric near-field intensities of these nanocrystals have been performed to evaluate the experimental results. Superior SERS activity of these nanocrystals can be expected toward the detection of many other molecules.
UR - http://www.scopus.com/inward/record.url?scp=80052248015&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80052248015&partnerID=8YFLogxK
U2 - 10.1021/ic200504n
DO - 10.1021/ic200504n
M3 - Article
C2 - 21797229
AN - SCOPUS:80052248015
VL - 50
SP - 8106
EP - 8111
JO - Inorganic Chemistry
JF - Inorganic Chemistry
SN - 0020-1669
IS - 17
ER -