Deakin University
Browse

File(s) under permanent embargo

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

Version 2 2024-06-03, 16:41
Version 1 2018-07-12, 12:18
journal contribution
posted on 2024-06-03, 16:41 authored by HY Guo, SP Xu, Bin TangBin Tang, JL Tao, LY Pan, WQ Xu
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.

History

Journal

Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities

Volume

33

Pagination

2308-2314

Location

Changchun, China

ISSN

0251-0790

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

[2012, Gao deng xue xiao hua xue xue bao]

Issue

10

Publisher

Gao deng xue xiao hua xue xue bao

Usage metrics

    Research Publications

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC