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Highly Intensified Surface Enhanced Raman Scattering through the Formation of p , p′ ‐Dimercaptoazobenzene on Ag Nanoparticles/Graphene Oxide Nanocomposites
Author(s) -
Wu HongYi,
Lai YingHuang,
Hsieh MengShan,
Lin ShiauDan,
Li YenCheng,
Lin TsungWu
Publication year - 2014
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201400119
Subject(s) - graphene , rhodamine 6g , raman scattering , nanocomposite , materials science , oxide , nanoparticle , raman spectroscopy , nanotechnology , scattering , molecule , chemical engineering , optics , physics , chemistry , organic chemistry , engineering , metallurgy
The reversible conversion between 4‐aminothiophenol and p , p′ ‐dimercaptoazobenzene is performed with a single Ag nanoparticles/graphene oxide nanocomposite (AgNPs/GO) via the assistance of local surface plasmons. The formation of p , p′ ‐dimercaptoazobenzene on AgNPs/GO leads to the decrease in distance between adjacent AgNPs on a GO surface, enhancing the local electromagnetic field near AgNPs. This effect is beneficial to enhancing surface Raman enhanced scattering signals of Rhodamine 6G molecules.