Premium
Disorder Effects in “Plastic” and Highly Conducting Compounds of Poly(aniline)
Author(s) -
Djurado David,
Sniechowski Maciej,
Bée Marc,
Johnson Mark,
Gonzalez Miguel A.,
Rannou Patrice,
Pron Adam
Publication year - 2006
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200650905
Subject(s) - materials science , stacking , molecular dynamics , chemical physics , aniline , neutron scattering , ion , polymer , conductivity , scattering , doping , conductive polymer , chemistry , computational chemistry , physics , composite material , optoelectronics , optics , organic chemistry
Numerical methods of molecular dynamics have been combined to measurements of X‐ray and neutron scattering in order to obtain a realistic view of structural and dynamical disorder properties of conducting compounds of so called “plastdoped” poly(aniline)s. This combination allowed us to propose for the whole family of these compounds one generic model of a layered structure in which exist statistical fluctuations of the electronic density along the stacking direction of alternating molecular layers. The most part of the dynamics in the 10 −13 –10 −9 s time range concerns the motions of protons borne by the flexible tails of doping counter‐ions contained in the structure. We found that the molecular dynamics is characterized by both broad time and spatial distributions. These experimental facts coupled to those obtained with electrical conductivity measurements indicate that the high mobility of the counter‐ion sublattice seems to be a prerequisite to promote a global metal like electronic behaviour of the polymer films.