Proceedings of nanoGe Fall Meeting 2021 (NFM21)
DOI: https://doi.org/10.29363/nanoge.nfm.2021.181
Publication date: 23rd September 2021
High performance flexible thermoelectric polymer-based material requires a high Seebeck coefficient, high electrical conductivity and low thermal conductivity. It is still challenging to meet all these requirements. Here we report the design and synthesis pi-conjugated polyelectrolytes with different degree of naphthalenediimide (NDI) core with covalently tethered quaternized ammonium cations. They are then incorporated with multi-valent oxalate anion which is a powerful latent electron donor when dispersed as small ion clusters to give in-situ n-dopable NDI polymers. We further optimised their morphologies using good-to-borderline solvent, and achieved both high seebeck coefficient and conductivity. Their doping level and electron mobility are also characterised.
Tang, C.G; Ang, M.C.Y.; Choo, K.K.; Keerthi, V.; Tan, J.K. ; Nur Syafiqah, M. ; Kugler, T. ; Burroughes, J.H.; Png, R.Q.; Chua, L.L.; Ho, P.K.H., Nature, 2016 , 539, 536 DOI: 10.1038/nature20133
Tang, C.G; Nur Syafiqah, M.; Koh, Q.M.; Zhao, C.; Zaini, J.; Seah, Q.J.; Humphries, MJ. Burroughes, J.H.; Png, R.Q.; Chua, L.L.; Ho, P.K.H. Nature, 2019, 573, 519; DOI: 10.1038/s41586-019-1575-7
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