Effect of Alkyl Chain Branching Point on 3D Crystallinity in High N-Type Mobility Indolonaphthyridine Polymers
Advanced Functional Materials
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Fallon, K., Santala, A., Wijeyasinghe, N., Manley, E., Goodeal, N., Leventis, A., Freeman, D., et al. (2017). Effect of Alkyl Chain Branching Point on 3D Crystallinity in High N-Type Mobility Indolonaphthyridine Polymers. Advanced Functional Materials, 27 (43)https://doi.org/10.1002/adfm.201704069
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Herein, this study investigates the impact of branching-point-extended alkyl chains on the charge transport properties of three ultrahigh n-type mobility conjugated polymers. Using grazing incidence wide-angle X-ray scattering, analysis of the crystallinity of the series shows that while π–π interactions are increased for all three polymers as expected, the impact of the side-chain engineering on polymer backbone crystallinity is unique to each polymer and correlates to the observed changes in charge transport. With the three polymers exhibiting n-type mobilities between 0.63 and 1.04 cm2 V−1 s−1, these results ratify that the indolonaphthyridine building block has an unprecedented intrinsic ability to furnish high-performance n-type organic semiconductors.
European Commission Horizon 2020 (H2020) ERC (679789)
External DOI: https://doi.org/10.1002/adfm.201704069
This record's URL: https://www.repository.cam.ac.uk/handle/1810/273259