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Polymers 2018, 10(5), 487;

The Effect of Aromatic Diimide Side Groups on the π-Conjugated Polymer Properties

Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland
Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
Author to whom correspondence should be addressed.
Received: 27 March 2018 / Revised: 17 April 2018 / Accepted: 28 April 2018 / Published: 1 May 2018
(This article belongs to the Special Issue π-Stacked Polymers)
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The presented study describes the method for the synthesis and characterization of a new class of conjugated copolymers containing a perylenediimide (PDI) and naphthalene diimide (NDI) side groups. The main conjugated backbone is a donor-acceptor polymer poly[3,6-carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)] containing thiophene and carbazole as donor units and benzothiadiazole as an acceptor unit. The presented compounds were synthesized in a multistep synthesis. The polymerization was carried out by Suzuki or Stille coupling reaction. Redox properties of the studied polymers were tested in different conditions. Electrochemical investigation revealed independent reduction of the main polymer chain and diimide side groups. UV-Vis spectroscopy revealed the overlap of two absorption spectra. The difference between the electron affinity of the polymer main chain and that of the diimides estimated electrochemically is approximately 0.3 eV. View Full-Text
Keywords: π-conjugated polymer; donor-acceptor; perylenediimide; PDI; naphtalenediimide; NDI π-conjugated polymer; donor-acceptor; perylenediimide; PDI; naphtalenediimide; NDI

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Drewniak, A.; Tomczyk, M.D.; Hanusek, L.; Mielanczyk, A.; Walczak, K.; Nitschke, P.; Hajduk, B.; Ledwon, P. The Effect of Aromatic Diimide Side Groups on the π-Conjugated Polymer Properties. Polymers 2018, 10, 487.

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