Charge transport physics of a unique class of rigid-rod conjugated polymers with fused-ring conjugated units linked by double carbon-carbon bonds
| Autor: | Ian E. Jacobs, Wan Yue, Sarah E. Rogers, Zhilong Zhang, Xuechen Jiao, Ada Onwubiko, Henning Sirringhaus, Xinglong Ren, Mojtaba Abdi-Jalebi, Najet Mahmoudi, Guoming Liu, Mark Nikolka, Remington Carey, Qijing Wang, Lianglun Lai, Iain McCulloch, Satyaprasad P. Senanayak, Sanyang Han, David Beljonne, Vincent Lemaur, Malgorzata Nguyen, Hu Chen, Youcheng Zhang, Christopher R. McNeill, Mingfei Xiao, Sam Schott, Cameron Jellett, Ekaterina Selezneva, Tudor H. Thomas, Aditya Sadhanala |
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| Rok vydání: | 2020 |
| Předmět: |
Materials Science
02 engineering and technology Electronic structure Conjugated system 010402 general chemistry Ring (chemistry) 01 natural sciences law.invention chemistry.chemical_compound law Single bond Electron paramagnetic resonance Research Articles chemistry.chemical_classification Quantitative Biology::Biomolecules Multidisciplinary SciAdv r-articles Charge (physics) Polymer 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Condensed Matter::Soft Condensed Matter Monomer chemistry Chemical physics 0210 nano-technology Research Article |
| Zdroj: | Science Advances |
| ISSN: | 2375-2548 |
| Popis: | The charge transport–limiting factors in conjugated polymers without single-bond linkages in the backbone have been identified. We investigate the charge transport physics of a previously unidentified class of electron-deficient conjugated polymers that do not contain any single bonds linking monomer units along the backbone but only double-bond linkages. Such polymers would be expected to behave as rigid rods, but little is known about their actual chain conformations and electronic structure. Here, we present a detailed study of the structural and charge transport properties of a family of four such polymers. By adopting a copolymer design, we achieve high electron mobilities up to 0.5 cm2 V−1 s−1. Field-induced electron spin resonance measurements of charge dynamics provide evidence for relatively slow hopping over, however, long distances. Our work provides important insights into the factors that limit charge transport in this unique class of polymers and allows us to identify molecular design strategies for achieving even higher levels of performance. |
| Databáze: | OpenAIRE |
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