Authors Heuken, M. ; Komber, H. ; Erdmann, T. ; Senkovskyy, V. ; Kiriy, A. ; Voit, B.
Title Fullerene-Functionalized Donor–Acceptor Block Copolymers through Etherification as Stabilizers for Bulk Heterojunction Solar Cellsheterojunction solar cells
Date 30.04.2012
Number 32702
Abstract A new synthetic method for the covalent linking of fullerenes to polymers is introduced. The Bingel-reaction was used to prepare bromine-functionalized fullerene building blocks that could be covalently linked to hydroxyl groups of model copolymers by the cesium carbonate promoted Williamson ether synthesis. Subsequently, block copolymers with a second block based on styrene and hydroxystyrene or hydroxyethyl methacrylate could be synthesized with a poly(3-hexylthiophene)–TEMPO macroinitiator through NMRP. Fullerene derivatives were linked to these polymers in a controlled manner and donor–acceptor block copolymers with high fullerene contents of near 50 wt % were achieved.
Publisher Macromolecules
Citation Macromolecules 45 (2012) 4101-4114
Tags polymer photovoltaic cells organic photovoltaics diblock copolymers regioregular poly(3-hexylthiophene) radical polymerization facile synthesis cesium salts morphology efficient polythiophene

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