Pyrroloindacenodithiophene polymers: the effect of molecular structure on OFET performance

Literature Information

Publication Date 2013-04-26
DOI 10.1039/C3PY00335C
Impact Factor 5.582
Authors

Jenny E. Donaghey, Raja Shahid Ashraf, Thomas D. Anthopoulos, Scott E. Watkins, Kigook Song, Charlotte K. Williams, Iain McCulloch


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Abstract

The synthesis, characterization and testing of four novel pyrroloindacenodithiophene (NIDT) copolymers, in organic field effect transistor (OFET) devices, is reported. Copolymerization of thiophene, thienothiophene, thienopyrrolodione and diketopyrrolopyrrole with NIDT, to form alternating copolymers, is described. Two-dimensional Grazing Incidence Wide Angle X-ray Diffraction (2D GIWAXD) is used to probe the thin film molecular structure and, together with DFT studies, help to explain why the diketopyrrolopyrrole containing polymer outperforms the others in terms of hole transport, exhibiting an average mobility of 0.01 cm2 V−1 s−1.

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