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Zhaokang Hu, Boyi Fu, Avishek Aiyar and Elsa Reichmanis Synthesis and characterization of graft polymethacrylates containing conducting diphenyldithiophene for organic thin-film transistors Journal of Polymer Science Part A: Polymer Chemistry 50

Article first published online: 9 SEP 2011 | DOI: 10.1002/pola.24957

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A series of [5,5″]-diphenyl-[5,5″]-dithiophene (PTTP)-modified methacrylates has been synthesized and free radically polymerized to form graft polymethacrylates with pendant semiconducting PTTP segments. Both the PTTP alkyl side chain and spacer between the semiconductor and methacrylate units significantly affected the reactivity of the monomers towards polymerization, as well as the resultant graft polymer physical properties including solubility, morphology, and electrochemical and electrical properties. Typical field- effect mobilities on the order of 10−5 cm2 V−1 s−1 were observed for all the PTTP monomers in air, which was attributed to their crystalline phase as revealed by differential scanning calorimetry (DSC) and X-ray diffraction (XRD) studies.

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