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Nanohelicoidal Nematic Liquid Crystal Formed by a Non‐Linear Duplexed Hexamer

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JournalAngewandte chemie-International edition
DateAccepted/In press - 19 Apr 2018
DateE-pub ahead of print - 19 Apr 2018
DatePublished (current) - 11 Jun 2018
Issue number4
Number of pages5
Pages (from-to)7096-7100
Early online date19/04/18
Original languageEnglish


The twist‐bend modulated nematic liquid crystal phase exhibits phenomena of fundamental importance to science; the formation of a helical pitch of nanometre scale in a fluid and the spontaneous breaking of mirror symmetry leading to a quasi‐fluid state composed of chiral domains despite being composed of an achiral material. We note that this phase has only been observed for materials with two or more mesogenic units, the manner of attachment between which is always linear. In this communication we report on non‐linear oligomers, with a H‐shaped hexamesogen found to exhibit both nematic and twist‐bend modulated nematic phases. This shatters the widely held assumption that a linear sequence of mesogenic units is a prerequisite for this phase, and points to this state of matter being exhibited by a much wider range of self‐assembling structures than was previously envisaged. The present results support the double helix model of the TB phase as opposed to the simple heliconical model. This new class of materials has the potential to act as low molecular weight surrogates for cross linked liquid‐crystalline elastomers.

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©2018 The Authors.

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