Premium
A three‐dimensional surface‐enhanced Raman scattering substrate: Au nanoparticle supramolecular self‐assembly in anodic aluminum oxide template
Author(s) -
Wang Xinnan,
Xu Shuping,
Li Haibo,
Tao Jinlong,
Zhao Bing,
Xu Weiqing
Publication year - 2012
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.3041
Subject(s) - raman scattering , thiophenol , substrate (aquarium) , nanoparticle , materials science , self assembly , raman spectroscopy , anodic aluminum oxide , template , nanotechnology , supramolecular chemistry , anodizing , chemical engineering , aluminium , molecule , chemistry , fabrication , organic chemistry , optics , composite material , medicine , physics , oceanography , alternative medicine , engineering , pathology , geology
A three‐dimensional surface‐enhanced Raman scattering (SERS) substrate via the self‐assembly of properly sized Au nanoparticles in anodic aluminum oxide templates was designed and prepared. Au nanoparticles first underwent hydrophobic surface modification. Then, the hydrophobic Au nanoparticles self‐assembled, aggregated and formed many hot spots in the anodic aluminum oxide templates through a supramolecular interaction. We chose thiophenol as a probe molecule to evaluate the SERS enhancement ability of this three‐dimensional substrate. The enhancement factor was calculated to be 4.6 × 10 6 under the radiation of a 785‐nm laser. By further comparing SERS signals from different points on the same substrate, we confirmed that this substrate possessed good reproducibility and could be applied for SERS detection. Copyright © 2011 John Wiley & Sons, Ltd.