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Invited Article

Developments in liquid-crystalline dimers and oligomers

ORCID Icon, &
Pages 2046-2059 | Received 20 Apr 2017, Published online: 29 Jun 2017

References

  • Imrie CT, Henderson PA, Yeap GY. Liquid crystal oligomers: going beyond dimers. Liq Cryst. 2009;36:755–777.
  • Imrie CT, Henderson PA. Liquid crystal dimers and higher oligomers: between monomers and polymers. Chem Soc Rev. 2007;36:2096–2124.
  • Henderson PA, Cook AG, Imrie CT. Oligomeric liquid crystals: from monomers to trimers. Liq Cryst. 2004;31:1427–1434.
  • Imrie CT, Henderson PA. Liquid crystal dimers and oligomers. Curr Opin Colloid In. 2002;7:298–311.
  • Imrie CT, Lu ZB, Picken SJ, et al. Oligomeric rod-disc nematic liquid crystals. Chem Commun. 2007;1245–1247.
  • Dozov I. On the spontaneous symmetry breaking in the mesophases of achiral banana-shaped molecules. Europhys Lett. 2001;56:247–253.
  • Sepelj M, Lesac A, Baumeister U, et al. Dimeric salicylaldimine-based mesogens with flexible spacers: parity-dependent mesomorphism. Chem Mater. 2006;18:2050–2058.
  • Sepelj M, Lesac A, Baumeister U, et al. Intercalated liquid-crystalline phases formed by symmetric dimers with an alpha,omega-diiminoalkylene spacer. J Mater Chem. 2007;17:1154–1165.
  • 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. Phys Rev Lett. 2010;105:167801.
  • Cestari M, Diez-Berart S, Dunmur DA, et al. Phase behavior and properties of the liquid-crystal dimer 1″,7″-bis(4-cyanobiphenyl-4ʹ-yl) heptane: a twist-bend nematic liquid crystal. Phys Rev E Stat Nonlin Soft Matter Phys. 2011;84:031704.
  • Henderson PA, Imrie CT. Methylene-linked liquid crystal dimers and the twist-bend nematic phase. Liq Cryst. 2011;38:1407–1414.
  • 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.
  • Adlem K, Copic M, Luckhurst GR, et al. Chemically induced twist-bend nematic liquid crystals, liquid crystal dimers, and negative elastic constants. Phys Rev E Stat Nonlin Soft Matter Phys. 2013;88:022503.
  • Borshch V, Kim YK, Xiang J, et al. Nematic twist-bend phase with nanoscale modulation of molecular orientation. Nat Commun. 2013;4:2635.
  • Chen D, Porada JH, Hooper JB, et al. Chiral heliconical ground state of nanoscale pitch in a nematic liquid crystal of achiral molecular dimers. Proc Natl Acad Sci U S A. 2013;110:15931–15936.
  • Zhang ZP, Panov VP, Nagaraj M, et al. Raman scattering studies of order parameters in liquid crystalline dimers exhibiting the nematic and twist-bend nematic phases. J Mater Chem C. 2015;3:10007–10016.
  • Mandle RJ. The dependency of twist-bend nematic liquid crystals on molecular structure: a progression from dimers to trimers, oligomers and polymers. Soft Matter. 2016;12:7883–7901.
  • Lu ZB, Henderson PA, Paterson BJA, et al. Liquid crystal dimers and the twist-bend nematic phase. The preparation and characterisation of the alpha,omega-bis(4-cyanobiphenyl-4′-yl) alkanedioates. Liq Cryst. 2014;41:471–483.
  • Paterson DA, Xiang J, Singh G, et al. Reversible isothermal twist-bend nematic-nematic phase transition driven by the photoisomerization of an azobenzene-based nonsymmetric liquid crystal dinner. J Am Chem Soc. 2016;138:5283–5289.
  • Challa PK, Borshch V, Parri O, et al. Twist-bend nematic liquid crystals in high magnetic fields. Phys Rev E Stat Nonlin Soft Matter Phys. 2014;89:060501.
  • Paterson DA, Abberley JP, Harrison WTA, et al. Cyanobiphenyl-based liquid crystal dimers and the twist-bend nematic phase. Liq Cryst. 2017;44:127–146.
  • Abberley JP, Jansze SM, Walker R, et al. Structure–property relationships in twist-bend nematogens: the influence of terminal groups. Liq Cryst. 2017;44:68–83.
  • Vanakaras AG, Photinos DJ. A molecular theory of nematic-nematic phase transitions in mesogenic dimers. Soft Matter. 2016;12:2208–2220.
  • Stevenson WD, Ahmed Z, Zeng XB, et al. Molecular organization in the twist-bend nematic phase by resonant X-ray scattering at the Se K-edge and by SAXS, WAXS and GIXRD. Arxiv E-Prints. 2016;1612.01180.
  • Sebastian N, Tamba MG, Stannarius R, et al. Mesophase structure and behaviour in bulk and restricted geometry of a dimeric compound exhibiting a nematic-nematic transition. Phys Chem Chem Phys. 2016;18:19299–19308.
  • Ramou E, Ahmed Z, Welch C, et al. The stabilisation of the Nx phase in mixtures. Soft Matter. 2016;12:888–899.
  • Pardaev SA, Shamid SM, Tamba MG, et al. Second harmonic light scattering induced by defects in the twist-bend nematic phase of liquid crystal dimers. Soft Matter. 2016;12:4472–4482.
  • Panov VP, Vij JK, Mehl GH. Twist-bend nematic phase in cyanobiphenyls and difluoroterphenyls bimosogens. Liq Cryst. 2017;44:147–159.
  • Emsley JW, Lelli M, Joy H, et al. Similarities and differences between molecular order in the nematic and twist-bend nematic phases of a symmetric liquid crystal dimer. Phys Chem Chem Phys. 2016;18:9419–9430.
  • Tamba MG, Salili SM, Zhang C, et al. A fibre forming smectic twist-bent liquid crystalline phase. Rsc Adv. 2015;5:11207–11211.
  • Ahmed Z, Welch C, Mehl GH. The design and investigation of the self-assembly of dimers with two nematic phases. Rsc Adv. 2015;5:93513–93521.
  • Sebastián N, Robles-Hernández B, Diez-Berart S, et al. Distinctive dielectric properties of nematic liquid crystal dimers. Liq Cryst. 2017;44:177–190.
  • Paterson DA, Gao M, Kim YK, et al. Understanding the twist-bend nematic phase: the characterisation of 1-(4-cyanobiphenyl-4′-yloxy)-6-(4-cyanobiphenyl-4′-yl)hexane (CB6OCB) and comparison with CB7CB. Soft Matter. 2016;12:6827–6840.
  • Dawood AA, Grossel MC, Luckhurst GR, et al. On the twist-bend nematic phase formed directly from the isotropic phase. Liq Cryst. 2016;43:2–12.
  • Robles-Hernandez B, Sebastian N, de la Fuente MR, et al. Twist, tilt, and orientational order at the nematic to twist-bend nematic phase transition of 1″,9″-bis(4-cyanobiphenyl-4′-yl) nonane: a dielectric, H-2 NMR, and calorimetric study. Phys Rev E. 2015;92(6):062505.
  • 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.
  • Xiang J, Li YN, Li Q, et al. Electrically tunable selective reflection of light from ultraviolet to visible and infrared by heliconical cholesterics. Adv Mater. 2015;27:3014–3018.
  • Xiang J, Varanytsia A, Minkowski F, et al. Electrically tunable laser based on oblique heliconical cholesteric liquid crystal. P Natl Acad Sci USA. 2016;113:12925–12928.
  • Mandle RJ, Goodby JW. Does topology dictate the incidence of the twist-bend phase? Insights gained from novel unsymmetrical bimesogens. Chem-Eur J. 2016;22:18456–18464.
  • Mandle RJ, Archbold CT, Sarju JP, et al. The dependency of nematic and twist-bend mesophase formation on bend angle. Sci Rep-UK. 2016;6:36682.
  • Archbold CT, Mandle RJ, Andrews JL, et al. Liq Cryst. 2017. Submitted for publication.
  • Sreenilayam SP, Panov VP, Vij JK, et al. The NTB phase in an achiral asymmetrical bent-core liquid crystal terminated with symmetric alkyl chains. Liq Cryst. 2017;44:244–253.
  • Cukrov G, Mosaddeghian Golestani Y, Xiang J, et al. Comparative analysis of anisotropic material properties of uniaxial nematics formed by flexible dimers and rod-like monomers. Liq Cryst. 2017;44:219–231.
  • Mandle RJ, Goodby JW. Dependence of mesomorphic behaviour of methylene-linked dimers and the stability of the NTB/NX phase upon choice of mesogenic units and terminal chain length. Chemistry. 2016;22:9366–9374.
  • Ivsic T, Vinkovic M, Baumeister U, et al. Towards understanding the N-TB phase: a combined experimental, computational and spectroscopic study. Rsc Adv. 2016;6:5000–5007.
  • Ivsic T, Vinkovic M, Baumeister U, et al. Retraction. Milestone in the NTB phase investigation and beyond: direct insight into molecular self-assembly. Soft Matter. 2015;11:6716.
  • Gorecka E, Vaupotic N, Zep A, et al. A twist-bend nematic (N-TB) phase of chiral materials. Angew Chem Int Edit. 2015;54:10155–10159.
  • Sebastian N, Lopez DO, Robles-Hernandez B, et al. Dielectric, calorimetric and mesophase properties of 1″-(2ʹ,4-difluorobiphenyl-4ʹ-yloxy)-9″-(4-cyanobiphenyl-4ʹ-yloxy) nonane: an odd liquid crystal dimer with a monotropic mesophase having the characteristics of a twist-bend nematic phase. Phys Chem Chem Phys. 2014;16:21391–21406.
  • Mandle RJ, Davis EJ, Lobato SA, et al. W. Synthesis and characterisation of an unsymmetrical, ether-linked, fluorinated bimesogen exhibiting a new polymorphism containing the N(TB) or ‘twist-bend’ phase. Phys Chem Chem Phys. 2014;16:6907–6915.
  • 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 Stat Nonlin Soft Matter Phys. 2014;89:022506.
  • Jansze SM, Martinez-Felipe A, Storey JM, et al. A twist-bend nematic phase driven by hydrogen bonding. Angew Chem Int Ed Engl. 2015;54:643–646.
  • Wang Y, Singh G, Agra-Kooijman DM, et al. Room temperature heliconical twist-bend nematic liquid crystal. Crystengcomm. 2015;17:2778–2782.
  • Mandle RJ, Goodby JW. A liquid crystalline oligomer exhibiting nematic and twist-bend nematic mesophases. Chemphyschem. 2016;17:967–970.
  • Mandle RJ, Goodby JW. Progression from nano to macro science in soft matter systems: dimers to trimers and oligomers in twist-bend liquid crystals. Rsc Adv. 2016;6:34885–34893.
  • Simpson FP, Mandle RJ, Goodby JW, et al. J Mater Chem C. 2017;5:5102–5110.
  • Archbold CT, Andrews JL, Mandle RJ, et al. Effect of the linking unit on the twist-bend nematic phase in liquid crystal dimers: a comparative study of two homologous series of methylene- and ether-linked dimers. Liq Cryst. 2017;44:84–92.
  • Frisch MJ, Trucks GW, Schlegel HB, et al. Gaussian 09. Wallingford (CT): Gaussian, Inc; 2009.
  • Mandle RJ, Davis EJ, Voll CCA, et al. Self-organisation through size-exclusion in soft materials. J Mater Chem C. 2015;3:2380–2388.
  • Mandle RJ, Davis EJ, Sarju JP, et al. Control of free volume through size exclusion in the formation of smectic C phases for display applications. J Mater Chem C. 2015;3:4333–4344.
  • Davis EJ, Mandle RJ, Russell BK, et al. Liquid-crystalline structure-property relationships in halogen-terminated derivatives of cyanobiphenyl. Liq Cryst. 2014;41:1635–1646.
  • Mandle RJ, Cowling SJ, Sage I, et al. Relationship between molecular association and re-entrant phenomena in polar calamitic liquid crystals. J Phys Chem B. 2015;119:3273–3280.
  • Mandle RJ, Davis EJ, Lobato SA, et al. Synthesis and characterisation of an unsymmetrical, ether-linked, fluorinated bimesogen exhibiting a new polymorphism containing the N-TB or ‘twist-bend’ phase. Phys Chem Chem Phys. 2014;16:6907–6915.
  • Mandle RJ, Voll CCA, Lewis DJ, et al. Etheric bimesogens and the twist-bend nematic phase. Liq Cryst. 2016;43:13–21.
  • Mandle RJ, Davis EJ, Voll CCA, et al. The relationship between molecular structure and the incidence of the N-TB phase. Liq Cryst. 2015;42:688–703.
  • 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.
  • Sajiki H, Hattori K, Hirota K. The formation of a novel Pd/C-ethylenediamine complex catalyst: chemoselective hydrogenation without deprotection of the O-benzyl and N-Cbz groups. J Org Chem. 1998;63:7990–7992.
  • Mandle RJ, Goodby JW. Dependence of mesomorphic behaviour of methylene-linked dimers and the stability of the N-TB/N-X phase upon choice of mesogenic units and terminal chain length. Chem-Eur J. 2016;22:9366–9374.
  • Le Questel JY, Berthelot M, Laurence C. Hydrogen-bond acceptor properties of nitriles: a combined crystallographic and ab initio theoretical investigation. J Phys Org Chem. 2000;13:347–358.
  • Leadbetter AJ, Mazid MA, Malik KMA. The crystal and molecular-structure of isobutyl 4-(4ʹ-phenylbenzylidene-amino)cinnamate (ibpbac) - and the crystal smectic-E transition. Mol Cryst Liq Cryst. 1980;61:39–59.
  • Mandle RJ, Goodby JW. Intercalated soft-crystalline mesophase exhibited by an unsymmetrical twist-bend nematogen. Crystengcomm. 2016;18:8794–8802.
  • Imrie CT, Luckhurst GR. Liquid crystal trimers. The synthesis and characterisation of the 4,4′-bis [omega-(4-cyanobiphenyl-4′-yloxy)alkoxy]biphenyls. J Mater Chem. 1998;8:1339–1343.