By
using different polysaccharide and polysulfonylimide type polyelectrolytes
for the synthesis of aqueous PEDOT:polyelectrolyte dispersions, the
influence of the polyelectrolyte backbone and of the anionic groups
on the properties of the resulting PEDOT:polyelectrolyte complex has
been studied. The obtained PEDOT:polyelectrolyte systems were characterized
regarding the doping and the morphology of the complexes in dispersion
as well as regarding the optoelectronic properties and the morphology
of the dry PEDOT:polyelectrolyte films. Polyelectrolytes with high
molar mass, a rigid backbone, and strongly acidic functionalities
resulted in highly conducting PEDOT:polyelectrolyte films, while polyelectrolytes
with flexible backbones and weakly acidic groups resulted in insulating
PEDOT:polyelectrolyte systems. These findings could help to develop
a palette of new PEDOT:polyelectrolyte systems, which correspond better
to the specific requirements of different applications.
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