PMID- 16536496 OWN - NLM STAT- MEDLINE DCOM- 20060525 LR - 20080117 IS - 0002-7863 (Print) IS - 0002-7863 (Linking) VI - 128 IP - 11 DP - 2006 Mar 22 TI - Nanostructure dependence of field-effect mobility in regioregular poly(3-hexylthiophene) thin film field effect transistors. PG - 3480-1 AB - Low polydispersity regioregular polythiophenes with number average molecular weights ranging from 2 to 13 kDa were cast under the same conditions from solution to form a series of field effect transistors (FETs). Tapping mode AFM and grazing incidence small-angle X-ray scattering revealed that in all cases the polymers formed regular nanofibrillar morphologies with the width of nanofibrils proportional to the weight average contour length of polymer chains, indicating that conjugated backbones were oriented perpendicular to the nanofibril axes. FET charge carrier mobilities exhibited exponential dependence on nanofibril width, pointing to the decisive role of extended conjugated pathways in charge transport. FAU - Zhang, Rui AU - Zhang R AD - Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, USA. FAU - Li, Bo AU - Li B FAU - Iovu, Mihaela C AU - Iovu MC FAU - Jeffries-El, Malika AU - Jeffries-El M FAU - Sauve, Genevieve AU - Sauve G FAU - Cooper, Jessica AU - Cooper J FAU - Jia, Shijun AU - Jia S FAU - Tristram-Nagle, Stephanie AU - Tristram-Nagle S FAU - Smilgies, Detlef M AU - Smilgies DM FAU - Lambeth, David N AU - Lambeth DN FAU - McCullough, Richard D AU - McCullough RD FAU - Kowalewski, Tomasz AU - Kowalewski T LA - eng GR - 200-2002-00528/PHS HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Am Chem Soc JT - Journal of the American Chemical Society JID - 7503056 RN - 0 (Thiophenes) RN - 0 (poly(3-hexylthiophene)) SB - IM MH - Microscopy, Atomic Force MH - Nanostructures/*chemistry MH - Semiconductors MH - Thiophenes/*chemistry EDAT- 2006/03/16 09:00 MHDA- 2006/05/26 09:00 CRDT- 2006/03/16 09:00 PHST- 2006/03/16 09:00 [pubmed] PHST- 2006/05/26 09:00 [medline] PHST- 2006/03/16 09:00 [entrez] AID - 10.1021/ja055192i [doi] PST - ppublish SO - J Am Chem Soc. 2006 Mar 22;128(11):3480-1. doi: 10.1021/ja055192i.