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Effect of Ag and Au nanoparticles on the SERS of 4-aminobenzenethiol assembled on powdered copper.
J Phys Chem B. 2005 Oct 13; 109(40):18929-34.JP

Abstract

Raman scattering measurements were conducted for 4-aminobenzenethiol (4-ABT) assembled on powdered copper substrates. Initially, very weak Raman peaks were detected, but upon attaching Ag nanoparticles probably via NH2 groups onto 4-ABT/Cu, distinct Raman spectra were observed. Considering the fact that no Raman peak was identified when Ag nanoparticles were adsorbed on 4-aminophenyl-derivatized silane monolayers assembled on silica powders, the Raman spectra observed for Ag@4-ABT/Cu should be surface-enhanced Raman scattering (SERS) spectra, occurring by an electromagnetic coupling of the localized surface plasmon of Ag nanoparticles with the surface plasmon polariton of Cu powders. The extra enhancement factor attainable by the attachment of a single Ag nanoparticle is estimated to be as large as 1.4 x 10(5) in the case when 632.8-nm radiation is used as the excitation source. When Au nanoparticles were attached onto 4-ABT/Cu, at least an order of magnitude weaker Raman spectra were obtained at all excitation wavelengths, however, indicating that the Au-to-Cu coupling should be far less effective than the Ag-to-Cu coupling for the induction of SERS.

Authors+Show Affiliations

Laboratory of Intelligent Interfaces, School of Chemistry, Seoul National University, Seoul 151-742, Korea. kwankim@snu.ac.krNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

16853437

Citation

Kim, Kwan, and Hyun Sook Lee. "Effect of Ag and Au Nanoparticles On the SERS of 4-aminobenzenethiol Assembled On Powdered Copper." The Journal of Physical Chemistry. B, vol. 109, no. 40, 2005, pp. 18929-34.
Kim K, Lee HS. Effect of Ag and Au nanoparticles on the SERS of 4-aminobenzenethiol assembled on powdered copper. J Phys Chem B. 2005;109(40):18929-34.
Kim, K., & Lee, H. S. (2005). Effect of Ag and Au nanoparticles on the SERS of 4-aminobenzenethiol assembled on powdered copper. The Journal of Physical Chemistry. B, 109(40), 18929-34.
Kim K, Lee HS. Effect of Ag and Au Nanoparticles On the SERS of 4-aminobenzenethiol Assembled On Powdered Copper. J Phys Chem B. 2005 Oct 13;109(40):18929-34. PubMed PMID: 16853437.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of Ag and Au nanoparticles on the SERS of 4-aminobenzenethiol assembled on powdered copper. AU - Kim,Kwan, AU - Lee,Hyun Sook, PY - 2006/7/21/pubmed PY - 2007/7/25/medline PY - 2006/7/21/entrez SP - 18929 EP - 34 JF - The journal of physical chemistry. B JO - J Phys Chem B VL - 109 IS - 40 N2 - Raman scattering measurements were conducted for 4-aminobenzenethiol (4-ABT) assembled on powdered copper substrates. Initially, very weak Raman peaks were detected, but upon attaching Ag nanoparticles probably via NH2 groups onto 4-ABT/Cu, distinct Raman spectra were observed. Considering the fact that no Raman peak was identified when Ag nanoparticles were adsorbed on 4-aminophenyl-derivatized silane monolayers assembled on silica powders, the Raman spectra observed for Ag@4-ABT/Cu should be surface-enhanced Raman scattering (SERS) spectra, occurring by an electromagnetic coupling of the localized surface plasmon of Ag nanoparticles with the surface plasmon polariton of Cu powders. The extra enhancement factor attainable by the attachment of a single Ag nanoparticle is estimated to be as large as 1.4 x 10(5) in the case when 632.8-nm radiation is used as the excitation source. When Au nanoparticles were attached onto 4-ABT/Cu, at least an order of magnitude weaker Raman spectra were obtained at all excitation wavelengths, however, indicating that the Au-to-Cu coupling should be far less effective than the Ag-to-Cu coupling for the induction of SERS. SN - 1520-6106 UR - https://www.unboundmedicine.com/medline/citation/16853437/Effect_of_Ag_and_Au_nanoparticles_on_the_SERS_of_4_aminobenzenethiol_assembled_on_powdered_copper_ L2 - https://doi.org/10.1021/jp052665z DB - PRIME DP - Unbound Medicine ER -