Synthesis and Characterization of Aluminum-polyaniline Thin Films and Membranes
Polyaniline (PAni) films of different intrinsic oxidation states, including emeraldine salt, emeraldine base and leucoemeraldine base, were synthesized. Free-standing membranes and thin film bilayers of aluminum-polyaniline were fabricated by magnetron sputter deposition of aluminum onto polyaniline films. Aluminum-polyaniline samples were analyzed by transmission electron microscopy (TEM) to investigate the microstructures of specimens, including cross-sectional TEM micrographs of the metal-polyaniline interfacial structure not previously reported in the literature. Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS) were employed to study the chemical bonding and interaction between deposited aluminum and polyaniline at the interface. Results indicated that the intrinsic oxidation state of the polyaniline influenced the chemistry of the aluminum-polyaniline interface. Distinct interaction between aluminum and polyaniline in the emeraldine salt-form was observed. However, there was no evidence of direct interactions of the aluminum with emeraldine base and leucoemeraldine base polyaniline.
Y. Liu et al., "Synthesis and Characterization of Aluminum-polyaniline Thin Films and Membranes," Surface and Interface Analysis, Wiley-Blackwell, Oct 2005.
The definitive version is available at http://dx.doi.org/10.1002/sia.2077
Materials Science and Engineering
United States. Defense Advanced Research Projects Agency
Keywords and Phrases
TEM; XPS; Aluminum-Polyaniline; Interface; Microstructure; Sputter Deposition
Article - Journal
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