Sidechain engineering in anthracene derivatives: towards photofunctional liquid crystals Online publication date: Fri, 24-Feb-2017
by Lia C. Van Den Kerkhof; Kathryn M. Allan; Kathryn M. McGrath; John L. Spencer; Justin M. Hodgkiss
International Journal of Nanotechnology (IJNT), Vol. 14, No. 1/2/3/4/5/6, 2017
Abstract: A series of anthracene derivatives were synthesised to explore how their sidechain configurations influenced their phase behaviour and thereby guiding the design of photofunctional liquid crystalline materials. In the case of 9,10-diphenylanthracene derivatives, longer and more alkyl sidechains resulted in lower melting temperatures, yet liquid crystallinity was not observed. A novel room-temperature molecular liquid was synthesised based on 9,10-diphenylanthracene, the optical properties of which may be exploited in photonic applications. Liquid crystallinity was observed in one of the derivatives of 9,10-bis(phenylethynyl)anthracene, forming a nematic phase at around 210°C. These results highlight the potential opportunities for photofunctional materials with enhanced properties if liquid crystalline anthracenes can be found with lower phase transition temperatures.
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