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Deposition of Gold Nanoparticles on Thin Polyaniline Films
Author(s) -
Sheffer Marisa,
Martina Virginia,
Seeber Renato,
Mandler Daniel
Publication year - 2008
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1560/ijc.48.3-4.349
Subject(s) - polyaniline , colloidal gold , chemistry , nanoparticle , chemical engineering , glassy carbon , deposition (geology) , indium tin oxide , dissolution , thin film , scanning electron microscope , electrochemistry , nanotechnology , amorphous solid , electrode , cyclic voltammetry , materials science , composite material , polymer , organic chemistry , paleontology , sediment , engineering , polymerization , biology
Local and bulk deposition of gold particles was accomplished by the spontaneous reaction between chemically reduced polyaniline (PAN) thin films and AuCl 4 − . PAN layers were deposited on glass, indium tin oxide (ITO), and glassy carbon (GC) by the Langmuir–Blodgett method and spin‐coating. Characterization of the PAN films was carried out by microscopy, UV–vis spectroscopy, and electrochemistry. We found that the nature of the gold deposit was greatly affected by the thickness of the PAN. Scanning electrochemical microscopy was used as a means of locally depositing gold nanoparticles on an unbiased PAN film by anodically dissolving a gold micro‐electrode. This represents a generic approach whereby a variety of metal micro‐ and nanoparticles can be locally deposited on insulating supports.