@article{gargi_kline_delongchamp_fischer_toney_brendan t. o'connor_2013, title={Charge Transport in Highly Face-On Poly(3-hexylthiophene) Films}, volume={117}, ISSN={["1932-7447"]}, DOI={10.1021/jp4050644}, abstractNote={We report that the π-stacking direction in poly(3-hexylthiophene) (P3HT) films can be made to orient strongly out-of plane by uniaxially straining films in orthogonal directions, providing a valuable opportunity to evaluate charge transport in a very unusual microstructure for this material. The structure of the films was characterized using UV–visible spectroscopy, X-ray diffraction, and near-edge X-ray absorption fine structure spectroscopy, showing that unstrained films have a weakly edge-on stacking character with a large orientation distribution, whereas films strained biaxially by 100% in orthogonal directions have highly face-on stacking. In the biaxially strained films the face-on packing occurs while the P3HT long axis orientation is found to be only weakly anisotropic in-plane. Charge transport is characterized in an organic thin-film transistor (OTFT) configuration, showing that the saturated field effect mobility in the biaxially strained films is greater than that for unstrained films for cha...}, number={34}, journal={JOURNAL OF PHYSICAL CHEMISTRY C}, author={Gargi, Deepak and Kline, R. Joseph and DeLongchamp, Dean M. and Fischer, Daniel A. and Toney, Michael F. and Brendan T. O'Connor}, year={2013}, month={Aug}, pages={17421–17428} }