
10 HIGH PERFORMANCE POLYMERS
the molecular configuration of the films [61]. Namely,
when an electric field is applied during the drying pro-
cess, the thickness is reduced.
1.3 Properties
Due to their use in electrical applications, interest
in polymers focuses on their electrical properties.
1.3.1 Liquid Crystalline Phases
PVK can form liquid crystalline polymers. The low-
est degree of polymerization for PVK t hat may form a
stable liquid crystalline phase is in the range of 150–
200 Da, which is significantly higher than 50 Da for
most conventional side-chain liquid crystalline poly-
mers [62].
1.3.1.1 Charge Transporting Materials
Polymers based on the carbazole ...