Abstract
We have developed a new method for preparing conducting polyaniline films and investigated their chemical and physical properties by means of UV-Vis., FT-IR, and dc conductivity measurements. Conducting polyaniline films are prepared by casting directly a lithium salt containing non-conducting polyaniline solution. The dried films show high dc conductivity even without further treatment with HCl. Effects of lithium salts, such as LiBF4, LiPF6, and LiClO4, and their concentrations on dc conductivity are examined. The dc conductivity of Pani-LiBF4 film is found to be better than those of Pani-LiPF6 and Pani-LiClO4 films. The dc conductivity increases with lithium salt concentration ranging from 0.1M to 0.025M, and exhibits maximum value of ∼10-1 S/cm when 0.1M LiBF4 is doped.
Original language | English |
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Pages (from-to) | 355-356 |
Number of pages | 2 |
Journal | Synthetic Metals |
Volume | 119 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 2001 Mar 15 |
Keywords
- Conductivity
- Infrared spectroscopy
- Polyaniline and derivatives
- Solution processing
- UV-Vis. absorption
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry