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Dithienosilolothiophene: A New Polyfused Donor for Organic Electronics

Schroeder, BC; Kirkus, M; Nielsen, CB; Ashraf, RS; McCulloch, I; (2015) Dithienosilolothiophene: A New Polyfused Donor for Organic Electronics. Macromolecules , 48 (16) pp. 5557-5562. 10.1021/acs.macromoL.5b00941. Green open access

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Abstract

We report the synthesis of a novel pentacyclic donor moiety, dithienosilolothiophene, and its incorporation into low bandgap semiconducting polymers. The unique geometry of this new donor allowed attaching four solubilizing side chains on the same side of the fused ring system, thus ensuring sufficient solubility when incorporated into conjugated polymers while simultaneously reducing the steric hindrance between adjacent polymer chains. The optoelectronic properties of three new polymers comprising the novel pentacyclic donor were investigated and compared to structurally similar thieno[3,2-b]thienobis(silolothiophene) polymers. Organic solar cells were fabricated in order to evaluate the new materials’ potential as donor polymers in bulk heterojunction solar cells and gain further insight into how the single-sided side-chain arrangement affects the active layer blend morphology.

Type: Article
Title: Dithienosilolothiophene: A New Polyfused Donor for Organic Electronics
Open access status: An open access version is available from UCL Discovery
DOI: 10.1021/acs.macromoL.5b00941
Publisher version: https://doi.org/10.1021/acs.macromoL.5b00941
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Physical Sciences, Polymer Science, polymer solar-cells, conjugated polymers, backbone curvature, fluorination, transistors, photovoltaics, performance, efficiency, design
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10048350
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