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Combined Microscopy, Calorimetry and X-ray Scattering Study of Fluorinated Dimesogens.

ABSTRACT: The material FDO11DFCB3 (compound 2 in this work) remains the only example of a liquid-crystalline material to exhibit a phase transition from the heliconical twist-bend phase into a lamellar smectic A mesophase, additionally this material exhibits a previously unidentified mesophase. We have prepared and characterised several homologues of this compound, with each material subjected to an in-depth analysis by optical microscopy, calorimetry and small angle X-ray scattering studies. Despite FDO11DFCB3 being similar in chemical structure to the novel materials presented herein its liquid-crystalline behaviour is rather different, indicating an unexpected sensitivity of the twist-bend phase to molecular structure.

SUBMITTER: Mandle RJ

PROVIDER: S-EPMC5645320 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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Combined Microscopy, Calorimetry and X-ray Scattering Study of Fluorinated Dimesogens.

Mandle Richard J RJ Cowling Stephen J SJ Goodby John W JW

Scientific reports 20171017 1

The material FDO11DFCB3 (compound 2 in this work) remains the only example of a liquid-crystalline material to exhibit a phase transition from the heliconical twist-bend phase into a lamellar smectic A mesophase, additionally this material exhibits a previously unidentified mesophase. We have prepared and characterised several homologues of this compound, with each material subjected to an in-depth analysis by optical microscopy, calorimetry and small angle X-ray scattering studies. Despite FDO1 ...[more]

PMID: 29042568

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