Barman, Shubhankar ; Bandyopadhyay, Supriya ; Ghosh, Anupam ; Das, Surajit ; Mondal, Tathagata ; Datta, Ayan ; Ghosh, Suhrit ; Datta, Anuja (2022) Ferroelectricity in a hydrogen-bonded alternating donor–acceptor supramolecular copolymer Chemical Communications . ISSN 1359-7345
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Official URL: http://doi.org/10.1039/D2CC02506J
Related URL: http://dx.doi.org/10.1039/D2CC02506J
Abstract
This communication reports synergistic H-bonding and charge-transfer (CT) interaction-promoted alternating supramolecular copolymerization of amide-functionalized pyrene (Py) and naphthalene-diimide (NDI) building blocks and the emergence of ferroelectricity with saturation polarization ∼3.2 μC cm−2, Curie temperature ∼304 K, and coercive field ∼8.5 kV cm−1 at 100 Hz. The Py or NDI molecules on their own do not exhibit any ferroelectric hysteresis, indicating an essential role of both CT-interaction and H-bonding in ferroelectricity. Computational studies provide insight into the origin of the polarization and the importance of the NDI/Py ratio. This study, showing room temperature ferroelectricity in purely organic systems, is of high relevance for flexible electronics and sensors. It opens up new opportunities for soft FE-materials with ample scope for further structural optimization.
Item Type: | Article |
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Source: | Copyright of this article belongs to Royal Society of Chemistry |
ID Code: | 125973 |
Deposited On: | 15 Sep 2022 10:32 |
Last Modified: | 15 Sep 2022 10:53 |
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