On the molecular origins of the ferroelectric splay nematic phase

Richard J. Mandle (), Nerea Sebastián, Josu Martinez-Perdiguero and Alenka Mertelj ()
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Richard J. Mandle: University of Leeds
Nerea Sebastián: Jožef Stefan Institute
Josu Martinez-Perdiguero: University of the Basque Country (UPV/EHU)
Alenka Mertelj: Jožef Stefan Institute

Nature Communications, 2021, vol. 12, issue 1, 1-12

Abstract: Abstract Nematic liquid crystals have been known for more than a century, but it was not until the 60s–70s that, with the development of room temperature nematics, they became widely used in applications. Polar nematic phases have been long-time predicted, but have only been experimentally realized recently. Synthesis of materials with nematic polar ordering at room temperature is certainly challenging and requires a deep understanding of its formation mechanisms, presently lacking. Here, we compare two materials of similar chemical structure and demonstrate that just a subtle change in the molecular structure enables denser packing of the molecules when they exhibit polar order, which shows that reduction of excluded volume is in the origin of the polar nematic phase. Additionally, we propose that molecular dynamics simulations are potent tools for molecular design in order to predict, identify and design materials showing the polar nematic phase and its precursor nematic phases.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-25231-0

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DOI: 10.1038/s41467-021-25231-0

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