Abstract
The physical and chemical properties of ultrathin polyaniline films vapor deposited on Cu(110) were studied by high-resolution electron-energy-loss spectroscopy (HREELS). During the initial stages of film growth, HREEL vibrational spectra demonstrate that aniline oligomers bond to Cu(110) via amino groups and react to form ordered emeraldine chains. Following protonic doping, the ultrathin emeraldine films exhibited a plasmon excitation in the far-infrared indicating superior electrical conductivity to doped solution-cast emeraldine films. These results demonstrate the importance of substrate interactions in determining the physical properties of polyaniline thin films.
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