McLaren, SR orcid.org/0000-0002-1627-6058, Tate, DJ, Lozman, OR et al. (2 more authors) (2015) Stabilised columnar mesophases formed by 1:1 mixtures of hexaalkoxytriphenylenes with a hexaphenyltriphenylene-based polymer. Journal of Materials Chemistry C, 22. ISSN 2050-7534
Abstract
The synthesis is reported for a main chain polymer in which the repeat units are 2,3,6,7,10,11-hexaphenyltriphenylene moieties linked through flexible dodecyl chains. In compositions with a series of 2,3,6,7,10,11-hexakis(alkoxy)triphenylenes (HATn) this new polymer forms stable hexagonal columnar liquid crystal phases. These are investigated in detail using optical polarised microscopy (OPM), differential scanning calorimetry (DSC) and X-ray diffraction (XRD). In these mixtures, suppression of crystallisation and enhancement of the clearing temperatures leads to very wide liquid crystal ranges: much wider than those for the HATn materials on their own. For the longer chain HATn compounds (n = 12-16) a columnar rectangular phase is also observed. The enhancement of the liquid crystal phase range is attributed to stabilising complementary polytopic interactions between the planar aromatic moieties.
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Copyright, Publisher and Additional Information: | © 2015, Royal Society of Chemistry. This is an author produced version of a paper published in Journal of Materials Chemistry C. Uploaded in accordance with the publisher's self-archiving policy. | ||||||||||||
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Institution: | The University of Leeds | ||||||||||||
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemistry (Leeds) > Organic Chemistry (Leeds) | ||||||||||||
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Depositing User: | Symplectic Publications | ||||||||||||
Date Deposited: | 24 Sep 2019 11:46 | ||||||||||||
Last Modified: | 24 Sep 2019 11:46 | ||||||||||||
Status: | Published | ||||||||||||
Publisher: | Royal Society of Chemistry | ||||||||||||
Identification Number: | https://doi.org/10.1039/C5TC00661A |