Pentaalkoxytriphenylene monoesters and their dyads; structural factors influencing columnar and nematic mesophase behaviour

Alanazi, Budur N., Alruwaili, Anoud M., Beskeni, Rhoda D., Cammidge, Andy N. ORCID: https://orcid.org/0000-0001-7912-4310 and Samman, Saeed S. (2022) Pentaalkoxytriphenylene monoesters and their dyads; structural factors influencing columnar and nematic mesophase behaviour. Liquid Crystals, 49 (7-9). pp. 1174-1183. ISSN 0267-8292

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Abstract

Ester linkages are frequently employed in the design of discotic liquid crystals, and indeed the first examples of discotic liquid crystals reported by Chandrasekhar, Sadashiva and Suresh were hexaesters of benzene. Within the wide range of liquid crystalline triphenylene systems so far reported, the symmetrical hexa(aryl) esters are particularly noteworthy because they form the relatively rare and technologically important discotic nematic mesophase. An alternative strategy for inducing nematogenic behaviour is to build linked and twinned structures, and here we report examples of materials that combine the two design features. Pentahexyloxy triphenylenes bearing a single aryl ester retain the columnar mesophase. Linked dyad structures promote nematic phase formation and stability is influenced by the link type and bonding arrangement within isomeric series (phthalates) and related constructs.

Item Type: Article
Additional Information: Funding: This work was supported by the TETFUND Nigeria; Technical and Vocational training corporation (Saudi Arabia); Princess Nourah Bint Abdul Rahman University; Taibah University.
Faculty \ School: Faculty of Science > School of Chemistry
Depositing User: LivePure Connector
Date Deposited: 14 Oct 2021 01:12
Last Modified: 23 Oct 2022 03:07
URI: https://ueaeprints.uea.ac.uk/id/eprint/81698
DOI: 10.1080/02678292.2021.1993456

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