Premium
Au nanoplate/polypyrrole nanofiber composite film: preparation, characterization and application as SERS substrate
Author(s) -
Xia Youyi,
Xiao Hongping
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.3076
Subject(s) - polypyrrole , raman scattering , raman spectroscopy , materials science , nanofiber , chemical engineering , nanostructure , composite number , substrate (aquarium) , nanotechnology , molecule , morphology (biology) , polymer chemistry , chemistry , composite material , polymer , polymerization , organic chemistry , optics , oceanography , physics , engineering , geology , biology , genetics
Without any other additives or additional energy, Au nanoplates have been successfully prepared and integrated simultaneously with the dedoped polypyrrole nanofiber film via the in situ reduction of AuCl 4 – on the film surface. The morphology and structure of the as‐prepared composite film are characterized, and its application for surface‐enhanced Raman scattering is also investigated. It has been found that the morphology of as‐prepared Au nanoplates is dependent on the reaction duration, while the density is dependent on the concentration of AuCl 4 – ions in the reaction process. It is suggested that polypyrrole plays dual reducing and structure‐directing roles during the formation of Au nanoplates. Surface‐enhanced Raman scattering study shows that the Au nanoplates give an intensive and enhanced Raman scattering when 4‐aminothiophenol is used as a probing molecule. The employed approach may shed some light on simultaneously fabricating and immobilizing other noble metal micro/nanostructures with unique morphology. Copyright © 2011 John Wiley & Sons, Ltd.