Effects of thermal treatment on properties and higher order structure of poly(3-alkylthiophene) and their relaxation behavior

Thermal hysteresis and relaxation of conductivity, optical proeprteis, ESR signals, and higher order structure of poly(3-dodecythiophene) have been studied. Conformational isomerization of side chain is concluded to be an origin of changes in higher order structure and of these effects of thermal treatments.