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Synthesis and mesomorphic behaviour of high polarisability materials for non-linear optical applications (2012)
Journal Article
Seed, A. J., Toyne, K. J., Goodby, J. W., & Hird, M. (2012). Synthesis and mesomorphic behaviour of high polarisability materials for non-linear optical applications. Liquid crystals, 39(4), (403-414). doi:10.1080/02678292.2012.658090. ISSN 0267-8292

A variety of high polarisability materials have been synthesised with thioester and alkyne linking groups, and isothiocyanato and cyano terminal groups. The synthesis of these materials is presented and the transition temperatures and optical paramet... Read More

Ferroelectricity in liquid crystals—materials, properties and applications (2011)
Journal Article
Hird, M. (2011). Ferroelectricity in liquid crystals—materials, properties and applications. Liquid crystals, 38(11-12), (1467-1493). doi:10.1080/02678292.2011.625126. ISSN 0267-8292

Molecular chirality confers the necessary reduced symmetry to tilted smectic liquid crystals and disordered crystals to generate ferroelectric properties. By definition, ferroelectrics are materials that possess a spontaneous polarisation in the abse... Read More

Professor Kenneth Johnson Toyne 1937–2011 (2011)
Journal Article
Hird, M. (2011). Professor Kenneth Johnson Toyne 1937–2011. Liquid crystals, 38(11-12), (1359-1360). doi:10.1080/02678292.2011.622612. ISSN 0267-8292

The life and research activities and achievements of Professor Kenneth Johnson Toyne are discussed in this obituary.

Synthesis and properties of novel columnar liquid crystals based on symmetrical and non-symmetrical 1,3,5-trisubstituted benzene derivatives (2010)
Journal Article
Stackhouse, P. J., Wilson, A., Lacey, D., & Hird, M. (2010). Synthesis and properties of novel columnar liquid crystals based on symmetrical and non-symmetrical 1,3,5-trisubstituted benzene derivatives. Liquid crystals, 37(9), 1191-1203. doi:10.1080/02678292.2010.490647

In this structure-property correlation study we have investigated a number of novel disc-shaped compounds incorporating a 1,3,5-trisubstituted benzene at the central core. All the materials with peripheral arms attached through an ester linkage exhib... Read More

The dramatic influence of the location of bend and of lateral fluoro substitution on the mesomorphic properties of angular chiral esters based on a 1,3-disubstituted benzene ring (2010)
Journal Article
Fergusson, K. M., & Hird, M. (2010). The dramatic influence of the location of bend and of lateral fluoro substitution on the mesomorphic properties of angular chiral esters based on a 1,3-disubstituted benzene ring. Journal of materials chemistry, 20(15), 3069-3078. doi:10.1039/b923267b

The synthesis and mesomorphic properties of a range of 3-ring and 4-ring chiral esters based on a 1,3-disubstituted benzene unit are detailed. These materials all deviate from the usual linear molecular architecture of liquid crystals, and hence are... Read More

The influence of an alkenyl terminal group on the mesomorphic behavior and electro-optic properties of fluorinated terphenyl liquid crystals (2010)
Journal Article
Hird, M., & Lewis, R. (2010). The influence of an alkenyl terminal group on the mesomorphic behavior and electro-optic properties of fluorinated terphenyl liquid crystals. Journal of materials chemistry, 20(2), 299 - 307. doi:10.1039/b914260f

Novel liquid crystal terphenyls with two, three and four lateral fluoro substituents and an alkene unit at the end of a terminal chain are presented in terms of synthesis, mesomorphic behaviour and electro-optic properties. The difluoro analogues wer... Read More

The synthesis and mesomorphic properties of liquid crystals with bulky terminal groups designed for bookshelf geometry ferroelectric mixtures (2009)
Journal Article
Radini, I. A., & Hird, M. (2009). The synthesis and mesomorphic properties of liquid crystals with bulky terminal groups designed for bookshelf geometry ferroelectric mixtures. Liquid crystals, 36(12), (1417-1430). doi:10.1080/02678290903268328. ISSN 0267-8292

The synthesis and mesomorphic properties of a systematic range of ortho difluoroterphenyls with a bulky terminal chain are detailed. The bulky terminal chain consists of either a tertiarybutyl group or a trimethylsilyl unit, each separated from the c... Read More

The influence of an alkenyl terminal group on the mesomorphic behaviour and electro-optic properties of fluorinated terphenyl liquid crystals (2009)
Journal Article
Goodby, J. W., Raynes, E. P., Cockett, M. C. R., Cowling, S. J., Gasowska, J. S., Hird, M., & Lewis, R. A. (2010). The influence of an alkenyl terminal group on the mesomorphic behaviour and electro-optic properties of fluorinated terphenyl liquid crystals. Journal of materials chemistry, 20(2), 299-307. doi:10.1039/b914260f

Novel liquid crystal terphenyls with two, three and four lateral fluoro substituents and an alkene unit at the end of a terminal chain are presented in terms of synthesis, mesomorphic behaviour and electro-optic properties. The difluoro analogues wer... Read More

Influence of acetylene-containing peripheral chains on the mesomorphic properties of triphenylene-based liquid crystals (2009)
Journal Article
Stackhouse, P. J., & Hird, M. (2009). Influence of acetylene-containing peripheral chains on the mesomorphic properties of triphenylene-based liquid crystals. Liquid crystals, 36(9), (953-965). doi:10.1080/02678290903165490. ISSN 0267-8292

Three series of novel acetylene-containing triphenylene-based liquid crystals have been prepared. One class of material is symmetrical with the acetylenic unit located at the terminus of a peripheral alkynyloxy chain in a peripheral position at the t... Read More

Molecular complexity and the control of self-organising processes (2009)
Journal Article
Goodby, J. W., Saez, I. M., Cowling, S. J., Gasowska, J. S., MacDonald, R. A., Sia, S., …Vaschenko, V. (2009). Molecular complexity and the control of self-organising processes. Liquid crystals, 36(6-7), 567-605. doi:10.1080/02678290903146060

In this article we investigate the complexity of the molecular architectures of liquid crystals based on rod-like mesogens. Starting from simple monomeric systems founded on fluoroterphenyls, we first examine the effects of aromatic core structure on... Read More

Measurement of electro-optical parameters of a high contrast FLC film (2008)
Journal Article
Karapinar, R., O'Neill, M., & Hird, M. (2009). Measurement of electro-optical parameters of a high contrast FLC film. Optics Communications, 282(7), (1345-1348). doi:10.1016/j.optcom.2008.12.017. ISSN 0030-4018

We have fabricated a ferroelectric liquid crystal (FLC) film by using a novel ferroelectric mixture. The various ferroelectric parameters such as response time, spontaneous polarization and contrast ratio of the FLC film have been measured. Experimen... Read More

Influence of branched chains on the mesomorphic properties of symmetrical and unsymmetrical triphenylene discotic liquid crystals (2008)
Journal Article
Stackhouse, P. J., & Hird, M. (2008). Influence of branched chains on the mesomorphic properties of symmetrical and unsymmetrical triphenylene discotic liquid crystals. Liquid crystals, 35(5), 597-607. doi:10.1080/02678290802040026

A series of novel symmetrical and unsymmetrical triphenylene-based discotic liquid crystalline materials with one or six branched peripheral alkoxy chains have been prepared. These materials have been compared with analogous known symmetrical and uns... Read More