Ferro- and ferrielectricity and negative piezoelectricity in thioamide-based supramolecular organic discotics
Amide-based discotic supramolecular organic materials are of interest for fundamental understanding of cooperative self-assembly and collective dipole switching mechanisms as well as for practically relevant ferroelectric and piezoelectric properties. Here, we show how replacing amides (dipole momen...
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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2023
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| In: |
Physical chemistry, chemical physics
Year: 2023, Volume: 25, Issue: 25, Pages: 16930-16937 |
| ISSN: | 1463-9084 |
| DOI: | 10.1039/D3CP00982C |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1039/D3CP00982C Verlag, lizenzpflichtig, Volltext: https://pubs.rsc.org/en/content/articlelanding/2023/cp/d3cp00982c 
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| Author Notes: | Indre Urbanaviciute, Miguel Garcia-Iglesias, Andrey Gorbunov, E.W. Meijer and Martijn Kemerink |
| Summary: | Amide-based discotic supramolecular organic materials are of interest for fundamental understanding of cooperative self-assembly and collective dipole switching mechanisms as well as for practically relevant ferroelectric and piezoelectric properties. Here, we show how replacing amides (dipole moment of ∼3.5 D) with thioamides (∼5.1 D) as dipolar moieties in the archetypal C3-symmetric discotic molecule BTA leads to ferroelectric materials with a higher remnant polarization and lower coercive field. The thioamide-based materials also demonstrate a rare negative piezoelectricity and a previously predicted, yet never experimentally observed, polarization reversal via asymmetric intermediate states, that is, ferrielectric switching. |
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| Item Description: | Veröffentlicht: 13. Juni 2023 Gesehen am 09.08.2023 |
| Physical Description: | Online Resource |
| ISSN: | 1463-9084 |
| DOI: | 10.1039/D3CP00982C |