Construction of composite surface-enhanced Raman scattering(SERS) substrates by silver nanoparticle assembly

Guo, HY, Xu, SP, Tang, Bin, Tao, JL, Pan, LY and Xu, WQ 2012, Construction of composite surface-enhanced Raman scattering(SERS) substrates by silver nanoparticle assembly, Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities, vol. 33, no. 10, pp. 2308-2314, doi: 10.7503/cjcu20120001.

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Title Construction of composite surface-enhanced Raman scattering(SERS) substrates by silver nanoparticle assembly
Author(s) Guo, HY
Xu, SP
Tang, BinORCID iD for Tang, Bin orcid.org/0000-0001-7111-8223
Tao, JL
Pan, LY
Xu, WQ
Journal name Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities
Volume number 33
Issue number 10
Start page 2308
End page 2314
Total pages 7
Publisher Gao deng xue xiao hua xue xue bao
Place of publication Changchun, China
Publication date 2012-10-01
ISSN 0251-0790
Keyword(s) Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry
Silver nanoparticles
Electromagnetic field enhancement
Surface-enhanced Raman scattering (SERS)
PLASMON RESONANCE
NANOSPHERE LITHOGRAPHY
SHAPE DEPENDENCE
HOT-SPOTS
SPECTROSCOPY
AG
4-AMINOTHIOPHENOL
TRANSFORMATION
MONOLAYERS
MOLECULES
Summary Metal-molecule-metal sandwich structures on quartz slides were constructed by the self-assembly of Ag nanoparticles with various shapes via p-aminothiophenol(PATP) molecules as linkers. These sandwich structures were characterized by extinction spectroscopy and surface-enhanced Raman scattering(SERS) spectroscopy using different excitation lasers. The results demonstrated that SERS intensities of PATP in sandwich structures were much stronger than those on silver nanoparticle monolayers. The calculated enhancement factors(EFs) of PATP on the composite SERS substrates showed that the large EFs appeared when the SPR peaks of SERS substrates well matched excitation lines. In these sandwich structures, PATP molecules tended to form a new surface species(p, p'-dimercaptoazobenzene, DMAB) under a laser-induced catalytic coupling reaction. In addition, the laser-induced catalytic coupling reaction was closely related to excitation wavelengths.
Language eng
DOI 10.7503/cjcu20120001
Indigenous content off
Field of Research 03 Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©[2012, Gao deng xue xiao hua xue xue bao]
Persistent URL http://hdl.handle.net/10536/DRO/DU:30111045

Document type: Journal Article
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