Etheric bimesogens and the twist-bend nematic phase

References

• Panov VP, Nagaraj M, Vij JK, et al. Spontaneous periodic deformations in nonchiral planar-aligned bimesogens with a nematic-nematic transition and a negative elastic constant. PRL. 2010;105:167701. DOI:10.1103/PhysRevLett.105.167801.
   Web of Science ®Google Scholar
• Cestari M, Diez-Berart S, Dunmur DA, et al. Phase behavior and properties of the liquid-crystal dimer 1′′,7′′-bis(4-cyanobiphenyl-4′-yl) heptane: a twist-bend nematic liquid crystal. Phys Rev E. 2011;84:31704. DOI:10.1103/PhysRevE.84.031704.
   PubMed Web of Science ®Google Scholar
• Tripathi CSP, Losada-Pérez P, Glorieux C, et al. Nematic-nematic phase transition in the liquid crystal dimer CBC9CB and its mixtures with 5CB: A high-resolution adiabatic scanning calorimetric study. Phys Rev E. 2011;84:41707. DOI:10.1103/PhysRevE.84.041707.
   PubMed Web of Science ®Google Scholar
• Panov VP, Balachandran R, Nagaraj M, et al. Microsecond linear optical response in the unusual nematic phase of achiral bimesogens. Appl Phys Lett. 2011;99:261903. DOI:10.1063/1.3671996.
   Web of Science ®Google Scholar
• Chen D, Nakata M, Shao R, et al. Twist-bend heliconical chiral nematic liquid crystal phase of an achiral rigid bent-core mesogen. Phys Rev E. 2014;89:022506. DOI:10.1103/PhysRevE.89.022506.
   PubMed Web of Science ®Google Scholar
• Beguin L, Emsley JW, Lelli M, et al. The chirality of a twist-bend nematic phase identified by NMR spectroscopy. J Phys Chem B. 2012;116:7940–7951. DOI:10.1021/jp302705n.
   PubMed Web of Science ®Google Scholar
• Chen D, Porada JH, Hooper JB, et al. A twist-bend chiral helix of 8 nm pitch in a nematic liquid crystal of achiral molecular dimers. PNAS. 2013;110:15931–15936. DOI:10.1073/pnas.1314654110.
   PubMed Web of Science ®Google Scholar
• Mandle RJ, Davis EJ, Archbold CT, et al. Microscopy studies of the nematic NTB phase of 1,11-Di-(1′′-cyanobiphenyl-4-yl)undecane. J Mater Chem C. 2014;2:556–566. DOI:10.1039/C3TC32137A.
   PubMed Web of Science ®Google Scholar
• Henderson PA, Imrie CT. Methylene-linked liquid crystal dimers and the twist-bend nematic phase. Liq Cryst. 2011;38:1407–1414. DOI:10.1080/02678292.2011.624368.
   Web of Science ®Google Scholar
• Greco C, Luckhurst GR, Ferrarini A. Enantiotopic discrimination and director organization in the twist-bend nematic phase. PCCP. 2013;15:14961–14965. DOI:10.1039/c3cp52222a.
   PubMed Web of Science ®Google Scholar
• Meyer C, Luckhurst GR, Dozov I. Flexoelectrically driven electroclinic effect in the twist-bend nematic phase of achiral molecules with bent shapes. PRL. 2013;111:67801. DOI:10.1103/PhysRevLett.111.067801.
   PubMed Web of Science ®Google Scholar
• Borshch V, Kim Y-K, Xiang J, et al. Nematic twist-bend phase with nanoscale modulation of molecular orientation. Nat Commun. 2013;4:2635. DOI:10.1038/ncomms3635.
   PubMed Web of Science ®Google Scholar
• Balachandran R, Panov VP, Panarin YP, et al. Flexoelectric behavior of bimesogenic liquid crystals in the nematic phase – observation of a new self-assembly pattern at the twist-bend nematic and the nematic interface. J Mater Chem C. 2014;2:8179–8184. DOI:10.1039/C4TC01043D.
   Web of Science ®Google Scholar
• Meyer C, Luckhurst GR, Dozov I. The temperature dependence of the heliconical tilt angle in the twist-bend nematic phase of the odd dimer CB7CB. J Mater Chem C. 2015;3:318–328. DOI:10.1039/C4TC01927J.
   Web of Science ®Google Scholar
• Salili SM, Kim C, Sprunt S, et al. Flow properties of a twist-bend nematic liquid crystal. RSC Adv. 2014;4:57419–57423. DOI:10.1039/C4RA10008E.
   Web of Science ®Google Scholar
• Hoffmann A, Vanakaras AG, Kohlmeier A, et al. On the structure of the nx phase of symmetric dimers: inferences from NMR. Soft Matter. 2015;11:850–855. DOI:10.1039/c4sm02480j.
   PubMed Web of Science ®Google Scholar
• Balachandran R, Panov VP, Vij JK, et al. Elastic properties of bimesogenic liquid crystals. Liq Cryst. 2013;40:681–688. DOI:10.1080/02678292.2013.765973.
   Web of Science ®Google Scholar
• Jokisaari JP, Luckhurst GR, Timimi BA, et al. Twist-bend nematic pjhase of the liquid crystal dimer CB7CB: orientational order and conical angle determined by 129Xe and 2H NMR spectroscopy. Liq Cryst. 2015;42:708–721. DOI:10.1080/02678292.2015.1037576.
   Web of Science ®Google Scholar
• Dozov I. On the spontaneous symmetry breaking in the mesophases of achiral banana-shaped molecules. Europhys Lett. 2001;56:247–253. DOI:10.1209/epl/i2001-00513-x.
   Google Scholar
• Meyer RB. Structural problems in liquid crystal physics. In: Balian R, Weil G, editors. Les houches summer school in theoretical physics, 1973. Molecular Fluids. New York (NY): Gordon and Breach; 1976.
   Google Scholar
• Gorecka E, Salamonczyk M, Zep A, et al. Do the short helices exist in the nematic TB phase. Liq Cryst. 2015;42:1–7. DOI:10.1080/02678292.2014.984646.
   Web of Science ®Google Scholar
• Ivšića T, Vinkovićb M, Baumeister U, et al. Retracted article: milestone in the NTB phase investigation and beyond: direct insight into molecular self-assembly. Soft Matte. 2014;10:9334–9342. DOI:10.1039/C4SM02119C.
   PubMed Web of Science ®Google Scholar
• Yun C-J, Vengatesan MR, Vij JK, et al. Hierarchical elasticity of bimesogenic liquid crystals with twist-bend nematic phase. Appl Phys Lett. 2015;106:173102–173105. DOI:10.1063/1.4919065.
   Web of Science ®Google Scholar
• Mandle RJ, Davis EJ, Archbold CT, et al. Apolar bimesogens and the incidence of the twist-bend nematic phase. Chem Eur J. 2015;21:8158–8167. DOI:10.1002/chem.201500423.
   PubMed Web of Science ®Google Scholar
• Sebastián N, López DO, Robles-Hernández B, et al. Dielectric, calorimetric and mesophase properties of 1′′-(2′,4-Difluorobiphenyl-4′-yloxy)-9′′-(4-cyanobiphenyl-4′-yloxy) nonane: an odd liquid crystal dimer with a monotropic mesophase having the characteristics of a twist-bend nematic phase. PCCP. 2014;16:21391–21406. DOI:10.1039/C4CP03462G.
   PubMed Web of Science ®Google Scholar
• Mandle RJ, Davis EJ, Lobato SA, et al. Synthesis and characterisation of an unsymmetrical, ether-linked, fluorinated bimesogen exhibiting a new polymorphism containing the NTB or ‘Twist-Bend’ phase. PCCP. 2014;16:6907–6915. DOI:10.1039/c4cp00172a.
   PubMed Web of Science ®Google Scholar
• Jansze SM, Martínez-Felipe A, Storey JMD, et al. A twist-bend nematic phase driven by hydrogen bonding. Angew Chem Int Ed. 2015;54:643–636.
   PubMed Web of Science ®Google Scholar
• Wang Y, Singh G, Agra-Kooijman DM, et al. Room temperature heliconical twist-bend nematic liquid crystal. Cryst Eng Comm. 2015;17:2778–2782. DOI:10.1039/C4CE02502D.
   Web of Science ®Google Scholar
• Mandle RJ, Davis EJ, Voll C-CA, et al. The relationship between molecular structure and the incidence of the NTB phase. Liq Cryst. 2015;42:688–703. DOI:10.1080/02678292.2014.974698.
   Web of Science ®Google Scholar
• Frisch MJ, Trucks GW, Schlegel HB, et al. Gaussian 09, revision D.01. Wallingford (CT): Gaussian, Inc; 2009.
   Google Scholar
• Tarini M, Cignoni P, Montani C. Ambient occlusion and edge cueing for enhancing real time molecular visualization. IEEE Trans Vis Comput Graph. 2006;12:1237–1244. DOI:10.1109/TVCG.2006.115.
   PubMed Web of Science ®Google Scholar
• Cestari M, Frezza E, Ferrarini A, et al. Crucial role of molecular curvature for the bend elastic and flexoelectric properties of liquid crystals: mesogenic dimers as a case study. J Mater Chem. 2011;21:12303–12308. DOI:10.1039/c1jm12233a.
   Web of Science ®Google Scholar