Issue 75, 2022

Ferroelectricity in a hydrogen-bonded alternating donor–acceptor supramolecular copolymer

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.

Graphical abstract: Ferroelectricity in a hydrogen-bonded alternating donor–acceptor supramolecular copolymer

Supplementary files

Article information

Article type
Communication
Submitted
03 may 2022
Accepted
22 avq 2022
First published
22 avq 2022

Chem. Commun., 2022,58, 10508-10511

Ferroelectricity in a hydrogen-bonded alternating donor–acceptor supramolecular copolymer

S. Barman, S. Bandyopadhyay, A. Ghosh, S. Das, T. Mondal, A. Datta, S. Ghosh and A. Datta, Chem. Commun., 2022, 58, 10508 DOI: 10.1039/D2CC02506J

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