Orientation of Regioregular Poly(3-hexylthiophene) by Directional Solidification: A Simple Method to Reveal the Semicrystalline Structure of a Conjugated Polymer


  • Dr. Christian Chaumont is gratefully acknowledged for performing the XRD measurements on oriented TCB thin films. Fruitful discussions with Drs. Bernard Lotz and Marc Schmutz are gratefully acknowledged. We also thank Dr. T. Jenkins (Merck Chemicals Ltd.) for kindly providing the P3HT samples used in this study. This work was supported by EU contract HPRN-CT-2002-0327. Supporting Information is available online from Wiley InterScience or from the author.


original image

Highly oriented and crystalline regioregular poly(3-hexylthiophene) (P3HT) films have been obtained by directional solidification. Oriented P3HT crystallizes from a solution in 1,3,5-trichlorobenzene, which plays the dual role of solvent and orienting substrate. Periodic alternation of crystalline lamellae separated by amorphous zones, the typical fingerprint of the semicrystalline structure of P3HT, are observed (see figure).