| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Imrie, Corrie
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Topics
Publications (16/16 displayed)
- 2024A design approach to obtaining highly polar liquid crystal dimerscitations
- 2021Twist-Bend Nematic Glassescitations
- 2021Multiple Polar and Non-polar Nematic Phasescitations
- 2019Augmenting Bragg Reflection with Polymer-sustained Conical Helixcitations
- 2015New insights into the liquid crystal behaviour of hydrogen-bonded mixtures provided by temperature-dependent FTIR spectroscopycitations
- 2013Study of Structure Formation in Side-Chain Liquid Crystal Copolymers by Variable Temperature Fourier Transform Infrared Spectroscopycitations
- 2013Spectroscopic and thermal characterisation of the swelling behaviour of Nafion membranes in mixtures of water and methanolcitations
- 2013Characterization of Functionalized Side-Chain Liquid Crystal Methacrylates Containing Nonmesogenic Units by Dielectric Spectroscopycitations
- 2013A new polymer electrolyte based on a discotic liquid crystal triblock copolymercitations
- 2012Synthesis and characterisation of side chain liquid crystal copolymers containing sulfonic acid groupscitations
- 2011New insights from variable-temperature and variable-pressure studies into coupling and decoupling processes for ion transport in polymer electrolytes and glassescitations
- 2010Preparation and thermal characterisation of films containing liquid crystals in a cellulose acetate substrate for externally regulated applicationscitations
- 2007Liquid crystal dimers and higher oligomerscitations
- 2004Discotic side group liquid crystal polymer electrolytes
- 2003Application of complementary experimental techniques to characterization of the phase behavior of [C(16)mim][PF6] and [C(14)mim][PF6]citations
- 2001Highly non-linear liquid crystal tetramerscitations
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article
Twist-Bend Nematic Glasses
Abstract
<p>A selection of pyrene-based liquid crystal dimers have been prepared, containing either methylene-ether or diether linked spacers of varying length and parity. All the diether linked materials, CBOnO.Py (n=5, 6, 11, 12), exhibit conventional nematic and smectic A phases, with the exception of CBO11O.Py which is exclusively nematic. The methylene-ether linked dimer, CBnO.Py, with an even-membered spacer (n=5) was solely nematogenic, but odd-members (n=6, 8, 10) exhibited both nematic and twist-bend nematic phases. Replacement of the cyanobiphenyl fragment by cyanoterphenyl giving CT6O.Py, gave elevated melting and nematic-isotropic transition temperatures, and SmA and SmC<sub>A</sub> phases were observed on cooling the nematic phase. Intermolecular face-to-face associations of the pyrene moieties drive glass formation, and all these materials have a glass transition temperature at or above room temperature. The stability of the glassy twist-bend nematic phase allowed for its study using AFM, and the helical pitch length, P<sub>TB</sub>, was measured as 6.3 and 6.7 nm for CB6O.Py and CB8O.Py, respectively. These values are comparable to the shortest pitch of a twist-bend nematic phase measured to date.</p>