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DOI: 10.1055/a-1528-6301
Dithienothiazine Copolymers – Synthesis and Electronic Properties of Novel Redox-Active Fluorescent Polymers
Funding Information The authors gratefully acknowledge the Ernst Jäger Foundation (scholarship for Jennifer Nau) and the Deutsche Forschungsgemeinschaft (Mu 1088/9-1) for the financial support.
Abstract
Dithienothiazine copolymers are efficiently obtained by Suzuki polymerization or in situ lithiation–Negishi polymerization in good to excellent yields. Gel permeation chromatography was applied to characterize the dispersities and degrees of polymerization of these novel materials. Thermogravimetric analysis shows that the copolymers are stable towards side-chain cleavage up to 200 °C. The materials are deep red to black amorphous solids or resins and their absorption and emission spectra in solution reveal broad absorption bands in the visible and orange to deep red luminescence upon UV excitation. According to the optical band gaps these novel copolymers qualify as a new class of low band gap organic semiconductors.
Key words
fluorescence - heterocycles - low band gap polymers - Negishi coupling - polymerization - Suzuki couplingSupporting Information
Supporting Information for this article is available online at https://doi.org/10.1055/a-1528-6301.
Publikationsverlauf
Eingereicht: 22. April 2021
Angenommen: 17. Mai 2021
Accepted Manuscript online:
14. Juni 2021
Artikel online veröffentlicht:
25. August 2021
© 2021. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)
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