Novel semiconducting polymer bearing thiazolothiazole unit for organic field-effect transistors

POLY 447

Itaru Osaka, iosaka@andrew.cmu.edu1, Geneviève Sauvé1, Rui Zhang, ruizhang@andrew.cmu.edu1, and Richard D. McCullough, rm5g@andrew.cmu.edu2. (1) Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, (2) Dean, Mellon College of Science, Carnegie Mellon University, 4400 Fifth Ave., Pittsburgh, PA 15213
Novel semiconducting polymer bearing the thiazolothiazole moiety in the polythiophene backbone was synthesized. The absorption peak of the polymer in chloroform was observed at 592 and 642 nm, which is quite larger than that of P3HT, due to the intramolecular charge transfer in the donor-acceptor type backbone. The ionization potential of the polymer was 5.1 eV, which is 0.2 eV higher than that of P3HT, suggesting the enhanced oxidative stability. The field-effect mobility of the polymer was as high as 0.14 cm2/Vs after annealing the polymer at the liquid crystalline temperature.
 

Conjugated Polymer Materials and Hybrids: Synthesis, Macromolecular Assemblies, and Nanostructures
6:00 PM-8:00 PM, Tuesday, August 21, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Polymer Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007