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5 October 2023 The long-debated story of homocoupling in alternating conjugated polymers: identification, quantification, prevention, and relevance for optoelectronic applications
Jochen Vanderspikken, Zhen Liu, Xiaocui Wu, Omar Beckers, Stefania Moro, Tyler James Quill, Quan Liu, Mouna Hamid, Bart Goderis, Erik Nies, Vincent Lemaur, David Beljonne, Alberto Salleo, Laurence Lutsen, Koen Vandewal, Bruno Van Mele, Giovanni Costantini, Niko Van den Brande, Wouter Maes
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Proceedings Volume PC12662, Organic and Hybrid Transistors XXII; PC1266207 (2023) https://doi.org/10.1117/12.2677276
Event: SPIE Organic Photonics + Electronics, 2023, San Diego, California, United States
Abstract
The true structure of alternating conjugated polymers – the state-of-the-art materials for a number of organic electronics technologies – often deviates from the idealized picture but this gets relatively limited attention. Here, we quantify the amount of homocoupling defects resulting from Stille polymerization and shed new light on the actual distribution of these structural defects in a prototype polymer material. Further, when compared to a homocoupling-free variant, these defects hinder fullerene intercalation, with a clear implication on charge-transfer absorption. This demonstrates that molecular defects may (strongly) impact polymer and blend properties and calls for increased attention for defect-free materials.
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Jochen Vanderspikken, Zhen Liu, Xiaocui Wu, Omar Beckers, Stefania Moro, Tyler James Quill, Quan Liu, Mouna Hamid, Bart Goderis, Erik Nies, Vincent Lemaur, David Beljonne, Alberto Salleo, Laurence Lutsen, Koen Vandewal, Bruno Van Mele, Giovanni Costantini, Niko Van den Brande, and Wouter Maes "The long-debated story of homocoupling in alternating conjugated polymers: identification, quantification, prevention, and relevance for optoelectronic applications", Proc. SPIE PC12662, Organic and Hybrid Transistors XXII, PC1266207 (5 October 2023); https://doi.org/10.1117/12.2677276
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KEYWORDS
Polymers
Optoelectronics
Fullerenes
Mass spectrometry
Materials properties
Molecular interactions
Organic electronics
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