Structure vs. Property relationship in high mobility fused thiophene polymers Conference

He, M, Li, J, Sorensen, ML et al. (2009). Structure vs. Property relationship in high mobility fused thiophene polymers . Proceedings of SPIE - The International Society for Optical Engineering, 7417 10.1117/12.826014

cited authors

  • He, M; Li, J; Sorensen, ML; Zhang, F; Fong, HH; Pozdin, VA; Smilgies, DM; Malliaras, GG

abstract

  • A family of conjugated polymers with fused structures consisting of three to five thiophene rings and with the same alkyl side chains has been synthesized as a means to understand structure - property relationships. All three polymers showed well extended conjugation through the polymer backbone. X-ray diffraction study of the polymer thin films suggests that the polymer with the even number of fused thiophene rings forms a tight crystalline structure due to its tilted side chain arrangement. On the other hand, the polymers with the odd number of fused thiophene rings packed more loosely. Characterization in a field-effect transistor configuration showed that the mobility of the polymer with the even number of rings is one order of magnitude higher than its odd-numbered counterparts. Through this structure - property study, we demonstrate that proper design of the molecules and properly arranged side chain positions on the polymer backbone can greatly enhance polymer electronic properties. © 2009 SPIE.

authors

publication date

  • December 1, 2009

published in

Digital Object Identifier (DOI)

volume

  • 7417