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

被引：44

作者：

Pociecha, Damian ^{[1
]}

Walker, Rebecca ^{[2
]}

Cruickshank, Ewan ^{[2
]}

Szydlowska, Jadwiga ^{[1
]}

Rybak, Paulina ^{[1
]}

Makal, Anna ^{[1
]}

Matraszek, Joanna ^{[1
]}

Wolska, Joanna M. ^{[1
]}

Storey, John M. D. ^{[2
]}

Imrie, Corrie T. ^{[2
]}

Gorecka, Ewa ^{[1
]}

机构：

[1] Univ Warsaw, Dept Chem, Zwirki & Wigury 101, PL-02089 Warsaw, Poland

[2] Univ Aberdeen, Dept Chem, Old Aberdeen AB24 3UE, Scotland

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2022年 / 361卷

基金：

英国工程与自然科学研究理事会;

关键词：

Nematic; Ferroelectric; Chirality; ASTERISK;

D O I：

10.1016/j.molliq.2022.119532

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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. (C) 2022 Published by Elsevier B.V.

引用

页数：5

共 31 条

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