Related Experiment Video
Updated: Aug 30, 2025

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Ferroelectricity in a hydrogen-bonded alternating donor-acceptor supramolecular copolymer
Shubhankar Barman1, Supriya Bandyopadhyay1, Anupam Ghosh2
1School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Kolkata-700032, India.
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.
More Related Videos
Related Concept Videos
Hydrogen Bonds
Molecular Shape and Polarity
π Electron Effects on Chemical Shift: Overview
Bond Polarity, Dipole Moment, and Percent Ionic Character
ortho–para-Directing Deactivators: Halogens
Intermolecular Forces

