Intrinsically chiral ferronematic liquid crystals: An inversion of the helical twist sense at the chiral nematic – Chiral ferronematic phase transition

Damian Pociecha; Rebecca Walker; Ewan Cruickshank; Jadwiga Szydlowska; Paulina Rybak; Anna Makal; Joanna Matraszek; Joanna M. Wolska; John M.D. Storey; Corrie T. Imrie; Ewa Gorecka

doi:10.1016/j.molliq.2022.119532

Intrinsically chiral ferronematic liquid crystals: An inversion of the helical twist sense at the chiral nematic – Chiral ferronematic phase transition

Damian Pociecha, Rebecca Walker, Ewan Cruickshank, Jadwiga Szydlowska, Paulina Rybak, Anna Makal, Joanna Matraszek, Joanna M. Wolska, John M.D. Storey, Corrie T. Imrie, Ewa Gorecka^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Strongly dipolar mesogenic compounds with a chiral center located in a lateral alkyl chain were synthesized, and shown to form the ferroelectric nematic phase. The presence of molecular chirality induced a helical structure in both the N* and N_F* phases, but with opposite helix sense in the two phases. The relaxation frequency of the polar fluctuations is only weakly affected by helical structure, it was found to be slightly lower for the chiral N_F* phase than for its achiral, non-branched counterpart with the same lateral chain length.

Original language	English
Article number	119532
Number of pages	5
Journal	Journal of molecular liquids
Volume	361
Early online date	23 Jun 2022
DOIs	https://doi.org/10.1016/j.molliq.2022.119532
Publication status	Published - 1 Sep 2022

Keywords

Chirality
Ferroelectric
Nematic

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Pociecha, D., Walker, R., Cruickshank, E., Szydlowska, J., Rybak, P., Makal, A., Matraszek, J., Wolska, J. M., Storey, J. M. D., Imrie, C. T., & Gorecka, E. (2022). Intrinsically chiral ferronematic liquid crystals: An inversion of the helical twist sense at the chiral nematic – Chiral ferronematic phase transition. Journal of molecular liquids, 361, [119532]. https://doi.org/10.1016/j.molliq.2022.119532

Pociecha, D, Walker, R , Cruickshank, E, Szydlowska, J, Rybak, P, Makal, A, Matraszek, J, Wolska, JM, Storey, JMD , Imrie, CT & Gorecka, E 2022, 'Intrinsically chiral ferronematic liquid crystals: An inversion of the helical twist sense at the chiral nematic – Chiral ferronematic phase transition', Journal of molecular liquids, vol. 361, 119532. https://doi.org/10.1016/j.molliq.2022.119532

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title = "Intrinsically chiral ferronematic liquid crystals: An inversion of the helical twist sense at the chiral nematic – Chiral ferronematic phase transition",

abstract = "Strongly dipolar mesogenic compounds with a chiral center located in a lateral alkyl chain were synthesized, and shown to form the ferroelectric nematic phase. The presence of molecular chirality induced a helical structure in both the N* and NF* phases, but with opposite helix sense in the two phases. The relaxation frequency of the polar fluctuations is only weakly affected by helical structure, it was found to be slightly lower for the chiral NF* phase than for its achiral, non-branched counterpart with the same lateral chain length.",

keywords = "Chirality, Ferroelectric, Nematic",

author = "Damian Pociecha and Rebecca Walker and Ewan Cruickshank and Jadwiga Szydlowska and Paulina Rybak and Anna Makal and Joanna Matraszek and Wolska, {Joanna M.} and Storey, {John M.D.} and Imrie, {Corrie T.} and Ewa Gorecka",

note = "Funding Information: The research was supported by the National Science Centre (Poland) under the grant no. 2016/22/A/ST5/00319. C.T.I. and J.M.D.S. acknowledge the financial support of the Engineering and Physical Sciences Research Council [EP/V048775/1]. ",

year = "2022",

month = sep,

day = "1",

doi = "10.1016/j.molliq.2022.119532",

language = "English",

volume = "361",

journal = "Journal of molecular liquids",

issn = "0167-7322",

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T1 - Intrinsically chiral ferronematic liquid crystals

T2 - An inversion of the helical twist sense at the chiral nematic – Chiral ferronematic phase transition

AU - Pociecha, Damian

AU - Walker, Rebecca

AU - Cruickshank, Ewan

AU - Szydlowska, Jadwiga

AU - Rybak, Paulina

AU - Makal, Anna

AU - Matraszek, Joanna

AU - Wolska, Joanna M.

AU - Storey, John M.D.

AU - Imrie, Corrie T.

AU - Gorecka, Ewa

N1 - Funding Information: The research was supported by the National Science Centre (Poland) under the grant no. 2016/22/A/ST5/00319. C.T.I. and J.M.D.S. acknowledge the financial support of the Engineering and Physical Sciences Research Council [EP/V048775/1].

PY - 2022/9/1

Y1 - 2022/9/1

N2 - Strongly dipolar mesogenic compounds with a chiral center located in a lateral alkyl chain were synthesized, and shown to form the ferroelectric nematic phase. The presence of molecular chirality induced a helical structure in both the N* and NF* phases, but with opposite helix sense in the two phases. The relaxation frequency of the polar fluctuations is only weakly affected by helical structure, it was found to be slightly lower for the chiral NF* phase than for its achiral, non-branched counterpart with the same lateral chain length.

AB - Strongly dipolar mesogenic compounds with a chiral center located in a lateral alkyl chain were synthesized, and shown to form the ferroelectric nematic phase. The presence of molecular chirality induced a helical structure in both the N* and NF* phases, but with opposite helix sense in the two phases. The relaxation frequency of the polar fluctuations is only weakly affected by helical structure, it was found to be slightly lower for the chiral NF* phase than for its achiral, non-branched counterpart with the same lateral chain length.

KW - Chirality

KW - Ferroelectric

KW - Nematic

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U2 - 10.1016/j.molliq.2022.119532

DO - 10.1016/j.molliq.2022.119532

M3 - Article

AN - SCOPUS:85132719787

VL - 361

JO - Journal of molecular liquids

JF - Journal of molecular liquids

SN - 0167-7322

M1 - 119532

ER -

Intrinsically chiral ferronematic liquid crystals: An inversion of the helical twist sense at the chiral nematic – Chiral ferronematic phase transition

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