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Stabilised columnar mesophases formed by 1 : 1 mixtures of hexaalkoxytriphenylenes with a hexaphenyltriphenylene-based polymer

McLaren, Sholto R.; Tate, Daniel J.; Lozman, Owen R.; Mehl, Georg H.; Bushby, Richard J.

Authors

Sholto R. McLaren

Daniel J. Tate

Owen R. Lozman

Richard J. Bushby

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.

Journal Article Type Article
Publication Date Jun 14, 2015
Journal Journal of materials chemistry C
Print ISSN 2050-7526
Electronic ISSN 2050-7534
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 3
Issue 22
Pages 5754-5763
Institution Citation McLaren, S. R., Tate, D. J., Lozman, O. R., Mehl, G. H., & Bushby, R. J. (2015). Stabilised columnar mesophases formed by 1 : 1 mixtures of hexaalkoxytriphenylenes with a hexaphenyltriphenylene-based polymer. Journal of materials chemistry. publ. by The Royal Society of Chemistry. C, Materials for optical and electronic devices /, 3(22), 5754-5763. doi:10.1039/c5tc00661a
DOI https://doi.org/10.1039/c5tc00661a
Keywords Materials Chemistry; General Chemistry
Publisher URL http://pubs.rsc.org/en/Content/ArticleLanding/2015/TC/C5TC00661A#!divAbstract
Copyright Statement ©2016 University of Hull
Additional Information This is a pre-copyedited, author-produced PDF of an article accepted for publication in Journal of materials chemistry C following peer review. The version of record, McLaren, S. (2015) Stabilised columnar mesophases formed by 1 : 1 mixtures of hexaalkoxytriphenylenes with a hexaphenyltriphenylene-based polymer. Journal of materials chemistry C, Volume 3, Issue 22, Pages 5754-5763, is available online at: http://dx.doi.org/10.1039/C5TC00661A.

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