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Supramolecular Organic Ferroelectric Materials from Donor-Acceptor Systems
Shubhankar Barman1, Aritri Pal1, Anurag Mukherjee1
1School of Applied and Interdisciplinary Sciences, Indian Association for Cultivation of Science, 2 A and 2B Raja S. C. Mullick Road, 700032, Kolkata, India.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|November 9, 2023
Summary
Organic ferroelectric materials show promise for future applications. This review explores donor-acceptor (D-A) charge-transfer (CT) complexes and soft materials, highlighting advancements in room-temperature ferroelectricity and piezoelectricity.
Area of Science:
- Materials Science
- Organic Chemistry
- Solid-State Physics
Background:
- Organic ferroelectric (FE) materials lag behind inorganic counterparts in polarization magnitude.
- Donor-acceptor (D-A) charge-transfer (CT) complexes offer potential for FE due to neutral-to-ionic phase transitions.
Purpose of the Study:
- To review supramolecular D-A systems for ferroelectric phase transitions.
- To discuss recent advancements in room-temperature ferroelectricity and related phenomena in organic materials.
Main Methods:
- Review of existing literature on D-A charge-transfer complexes and supramolecular assemblies.
- Analysis of structural factors influencing ferroelectricity, including H-bonding, charge transfer balance, and chirality.
- Discussion of emerging D-A soft materials like gels and polymers.
Main Results:
- Early CT cocrystals exhibited FE properties at sub-ambient temperatures.
- Recent D-A co-crystals with H-bond-stabilized lock-arm supramolecular ordering (LASO) show room-temperature ferroelectricity (RTFE).
- Emerging D-A soft materials and single-component systems demonstrate ferroelectricity and potential for piezoelectricity.
Conclusions:
- Supramolecular D-A systems are a promising avenue for developing organic ferroelectrics.
- Structural nuances significantly impact ferroelectric properties.
- Organic soft materials hold potential for micropower energy harvesting applications.
Keywords:
charge-transfer interactionsdonor-acceptor systemsferroelectricitypiezoelectricitysupramolecular assemblyMore Related Videos
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