Diketopyrrolopyrrole-diketopyrrolopyrrole-based conjugated copolymer for high-mobility organic field-effect transistors

In this communication, we report the synthesis of a novel diketopyrrolopyrrole-diketopyrrolopyrrole (DPP-DPP)-based conjugated copolymer and its application in high-mobility organic field-effect transistors. Copolymerization of DPP with DPP yields a copolymer with exceptional properties such as extended absorption characteristics (up to ∼1100 nm) and field-effect electron mobility values of >1 cm 2 V -1 s -1. The synthesis of this novel DPP-DPP copolymer in combination with the demonstration of transistors with extremely high electron mobility makes this work an important step toward a new family of DPP-DPP copolymers for application in the general area of organic optoelectronics. © 2012 American Chemical Society.

Sponsors

The authors acknowledge financial support from the Department of Science and Technology, India through the Indo-UK Apex Program and Ministry of Communication and Information Technology under a grant for the Centre of Excellence in Nanoelectronics, Phase II. We thank our colleagues Dr. Mallari Naik and Dr. N. Venkatramaiah for the TD-DFT calculations and support. We are grateful to Anke Helfer for GPC measurements. T.D.A. and N.Y.G. are grateful to the Engineering and Physical Sciences Research Council (EPSRC) (Grant EP/J001473/1) and the European Research Council (ERC) for financial support. Portions of this research were carried out at the Stanford Synchrotron Radiation Lightsource, a Directorate of SLAC National Accelerator Laboratory and an Office of Science User Facility operated for the U.S. Department of Energy Office of Science by Stanford University.

Publisher

American Chemical Society (ACS)

Journal

Journal of the American Chemical Society

ISSN

00027863

DOI

10.1021/ja308211n

Collections

Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; KAUST Solar Center (KSC)