Pocock, Emily E., Mandle, Richard orcid.org/0000-0001-9816-9661 and Goodby, John William (2018) Molecular shape as a means to control the incidence of the nanostructured twist bend phase. Soft Matter. ISSN 1744-683X
Abstract
Liquid crystalline phases with a spontaneous twist-bend modulation are most commonly observed for dimers and bimesogens with nonamethylene spacers. In order to redress this balance we devised a simple chemical intermediate that can be used to prepare unsymmetrical bimesogens; as a proof of concept we prepared and studied eleven novel materials with all found to exhibit the twist-bend phase and exhibit a linear relationship between TN-I and TTB-N. A computational study of the conformational landscape reveals the octamethyleneoxy spacer to have a broader distribution of bend-angles than the nonamethylene equivalent, leading to reductions in the thermal stability of the TB phase. This result indicates that a tight distribution of bend-angles should stabilise the TB phase and lead to direct TB-Iso phase transitions, and conversely a broader distribution should destabilise the TB phase which may allow new states of matter that are occluded by the incidence of this phase to be revealed.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©The Royal Society of Chemistry 2018 |
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: | 16 Mar 2018 12:50 |
Last Modified: | 22 Dec 2024 00:12 |
Published Version: | https://doi.org/10.1039/C7SM02364B |
Status: | Published online |
Refereed: | Yes |
Identification Number: | 10.1039/C7SM02364B |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:128610 |
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Filename: 37_Soft_Matter_EEP_paper_2018_advance_.pdf
Description: 37 - Soft Matter, EEP paper, 2018 (advance)
Licence: CC-BY-NC 2.5