M.A. Lutz, R.M. Feenstra, et al.
Surface Science
A series of studies have been carried out on polyaniline (emeraldine base; EB) thin films deposited on glass substrates from aqueous solutions of polymerizing aniline ("in-situ" EB-I film). These films exhibit a Vis/UV spectrum in which the exciton peak has an absorption maximum at ∼600 nm. Exposure of EB-I film to NMP vapor results in a red-shift of the exciton peak to ∼650 nm (EB-II film). Doping of EB-II film by aq. HCl vapor gives a more delocalized electronic structure and higher electrical conductivity than those of the doped EB-I film. It is concluded that EB-I and EB-II exist in "tight coil" and "expanded coil" conformations respectively which do not change on doping in aqueous HCl.
M.A. Lutz, R.M. Feenstra, et al.
Surface Science
T.N. Morgan
Semiconductor Science and Technology
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000
J.K. Gimzewski, T.A. Jung, et al.
Surface Science