Chiral induction of helical mesophase by amphiphilic chlorin e6 derivatives and their metal complexes: Effect of chiral and achiral aliphatic chains

Burmistrov, Vladimir; Novikov, Igor; Aleksandriiskii, Viktor; Batrakova, Alena; Belykh, Dmitry; Startseva, Olga; Koifman, Oskar I.

doi:10.1016/j.molliq.2024.123957

Cited by 1 publication

(1 citation statement)

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“…Both chiral and achiral (racemic) materials have great application significance, which has been proven many times [43][44][45][46][47][48][49][50]. The influence of adding the racemate to the mixture on the physicochemical properties and helical pitch was confirmed in this study, which aimed to prepare three mixtures containing (S) enantiomers and racemate, examine their mesomorphic and thermodynamic properties and helical pitch, and compare them with the base mixture.…”

Section: Discussionmentioning

confidence: 82%

Properties of Antiferroelectric Mixtures Differing in the Amount of Added Racemate

Urbańska,

Dardas

2024

Crystals

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Novel three-component liquid crystalline mixtures composed of chiral and achiral (racemic) liquid crystalline materials were designed and studied by polarizing optical microscopy, differential scanning calorimetry, and UV–VIS spectroscopy. The compositions of liquid crystalline mixtures were developed based on the composition of a two-component (binary) mixture marked as W-1000 with the following phase sequence: Cr ↔ SmCA* ↔ SmC* ↔ SmA* ↔ Iso. This mixture has an antiferroelectric (SmCA*) phase over a wide temperature range and exhibits a helical pitch inversion in this phase. All newly obtained mixtures occur in a wide temperature range of the SmCA* phase, while the ferroelectric (SmC*) phase and the orthogonal (SmA*) phase occur in a narrow temperature range. The new mixtures also have a very long helical pitch in the antiferroelectric phase and a short helical pitch in the ferroelectric phase.

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