Mandle, Richard J. orcid.org/0000-0001-9816-9661 and Goodby, John W. (2016) Dependence of Mesomorphic Behaviour of Methylene-Linked Dimers and the Stability of the NTB/NX Phase upon Choice of Mesogenic Units and Terminal Chain Length. Chemistry : A European Journal. 9366–9374. ISSN 1521-3765
Abstract
Twelve symmetrical dimeric materials consisting of a nonamethylene (C9) spacer and either phenyl 4-(4'-alkylphenyl)benzoate, phenyl 4-(4'-alkylcyclohexyl)benzoate or phenyl 4-(4'-alkylbicyclohexyl)carboxylate mesogenic units were prepared and their mesogenic behaviour characterised by POM, DSC and XRD. All of the materials exhibited nematic phases with clearing points in excess of 200°C. Four compounds were found to exhibit the twist-bend nematic phase, with one material exhibiting a transition from the NTB phase into an anticlinic smectic 'X' phase. Across all three series of compounds the length of terminal chain is seen to dictate, to some degree, the type of mesophase formed: shorter terminal chains favour nematic and NTB mesophases, whereas longer terminal aliphatic chains were found to promote smectic phases.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 Wiley-VCH Verlag GmbH & Co. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details |
Keywords: | Bimesogens,Liquid-crystalline dimers,Mesomorphism,Nematic phase,X-ray diffraction |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Funding Information: | Funder Grant number EPSRC EP/M020584/1 |
Depositing User: | Pure (York) |
Date Deposited: | 15 Jul 2016 16:13 |
Last Modified: | 27 Dec 2024 00:08 |
Published Version: | https://doi.org/10.1002/chem.201601146 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1002/chem.201601146 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:102550 |
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