Abstract
Two π-conjugated polymers were successfully synthesized by polycondensation via dehydrogenative direct alkenylation with Pd(II) catalyst (Pd(OAc)2) without directing groups in an atom- and step-economical and eco-friendly manner. Using the Pd(OAc)2/pyridine catalytic system, C-H activation of the C-5 position on the thiophene moiety of 3,6-di(thiophen-2'-yl)diketopyrrolopyrrole derivative was regioselective and the cross-coupled products were readily formed with trans-configuration. The optical, electrochemical, and thermal properties of the synthesized polymers were studied to investigate their potential applicability to semiconducting materials.
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Acknowledgments: This work was supported by the National Research Foundation (NRF) grants funded by the Korea Government (MSIT) (NRF- 2017R1A2A2A05001345 and No. 2011–0030013 through GCRC-SOP).
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Lee, J., Park, H.J., Joo, J.M. et al. Synthesis and Characterization of DPP-Based Conjugated Polymers via Dehydrogenative Direct Alkenylation Polycondensation. Macromol. Res. 27, 115–118 (2019). https://doi.org/10.1007/s13233-019-7070-z
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DOI: https://doi.org/10.1007/s13233-019-7070-z