Electrochemical Polymerization of Pyrrole and Electrochemistry of Polypyrrole Films in Ambient Temperature Molten Salts.
STATE UNIV OF NEW YORK AT BUFFALO DEPT OF CHEMISTRY
Pagination or Media Count:
Oxidative electrochemical polymerization of pyrrole has been shown to occur in the 11 mole ratio AlCl3N-l-butylpyridinium chlorideBuPyCl molten salt at 40 C. Polypyrrole cannot be prepared in analogous 0.81 basic or 1.21 acidic mole ratio melts. The polypyrrole prepared in the molten salt is electrochemically similar to polypyrrole prepared in acetonitrile both materials are conductors when oxidizes, can be used as electrode materials for the electrochemistry of solution species eg ferrocene and are oxidized and reduced at ca. -200 mV vs SSCE in CH3CN. The cyclic voltammetry of materials prepared in both CH3CN and in the neutral melt has been investigated in the AlCl3BuPyCl molten salt system and in CH3CN. The most significant differences appear in the kinetics of the redox chemistry. The most facile behavior was observed in a 0.81 melt with polypyrrole prepared in the 11 melt. Author
- Physical Chemistry