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Invited Article

Conformational landscapes of bimesogenic compounds and their implications for the formation of modulated nematic phases

, ORCID Icon, , ORCID Icon &
Pages 2079-2088 | Received 08 Jun 2017, Published online: 02 Aug 2017

References

  • 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(16):5283–5289.
  • 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(38):10007–10016.
  • Sebastian N, Lopez DO, Robles-Hernandez 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. Phys Chem Chem Phys. 2014;16(39):21391–21406.
  • 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(2):022506.
  • Zep A, Aya S, Aihara K, et al. Multiple nematic phases observed in chiral mesogenic dimers. J Mater Chem C. 2013;1(1):46–49.
  • 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(40):15931–15936.
  • Borshch V, Kim YK, Xiang J, et al. Nematic twist-bend phase with nanoscale modulation of molecular orientation. Nat Commun. 2013;4:2635.
  • 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. 2013;88(2).
  • Henderson PA, Imrie CT. Methylene-linked liquid crystal dimers and the twist-bend nematic phase. Liq Cryst. 2011;38(11–12):1407–1414.
  • 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 Stat Nonlin Soft Matter Phys. 2011;84(3 Pt 1):031704.
  • Šepelj 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(12):1154–1165.
  • Šepelj M, Lesac A, Baumeister U, et al. Dimeric salicylaldimine-based mesogens with flexible spacers: parity-dependent mesomorphism. Chem Mater. 2006;18(8):2050–2058.
  • Dozov I. On the spontaneous symmetry breaking in the mesophases of achiral banana-shaped molecules. Europhys Lett. 2001;56(2):247–253.
  • Zhu C, Tuchband MR, Young A, et al. Resonant Carbon K-edge soft X-ray scattering from lattice-free heliconical molecular ordering: soft dilative elasticity of the twist-bend liquid crystal phase. Phys Rev Lett. 2016;116(14):147803.
  • Mandle RJ, Davis EJ, Archbold CT, et al. Microscopy studies of the nematic NTBphase of 1,11-di-(1′′-cyanobiphenyl-4-yl)undecane. J Mater Chem C. 2014;2(3):556–566.
  • Archbold CT, Davis EJ, Mandle RJ, et al. Chiral dopants and the twist-bend nematic phase–induction of novel mesomorphic behaviour in an apolar bimesogen. Soft Matter. 2015;11(38):7547–7557.
  • Mandle RJ, Cowling SJ, Goodby JW. A nematic to nematic transformation exhibited by a rod-like liquid crystal. Phys Chem Chem Phys. 2017;19(18):11429–11435.
  • Mandle RJ. The shape of things to come: the formation of modulated nematic mesophases at various length scales. Chem Eur J. 2017;23:8771–8779.
  • 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(38):7883–7901.
  • Panov VP, Vij JK, Mehl GH. Twist-bend nematic phase in cyanobiphenyls and difluoroterphenyls bimesogens. Liq Cryst. 2017;44(1):147–159.
  • Ivšić T, Baumeister U, Dokli I, et al. Sensitivity of the NTB phase formation to the molecular structure of imino-linked dimers. Liq Cryst. 2017;44(1):93–105.
  • 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(1):84–92.
  • Abberley JP, Jansze SM, Walker R, et al. Structure-property relationships in twist-bend nematogens: the influence of terminal groups. Liq Cryst. 2017;44(1):68–83.
  • Paterson DA, Gao M, Kim Y-K, 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(32):6827–6840.
  • Mandle RJ, Voll CCA, Lewis DJ, et al. Etheric bimesogens and the twist-bend nematic phase. Liq Cryst. 2016;43(1):13–21.
  • 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(27):9366–9374.
  • Mandle RJ, Goodby JW. A twist-bend nematic to an intercalated, anticlinic, biaxial phase transition in liquid crystal bimesogens. Soft Matter. 2016;12(5):1436–1443.
  • 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(5–6):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(22):8158–8167.
  • 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. Phys Chem Chem Phys. 2014;16(15):6907–6915.
  • Mandle RJ, Goodby JW. A liquid crystalline oligomer exhibiting nematic and twist-bend nematic mesophases. Chemphyschem. 2016;17(7):967–970.
  • Wang Y, Singh G, Agra-Kooijman DM, et al. Room temperature heliconical twist-bend nematic liquid crystal. Crystengcomm. 2015;17(14):2778–2782.
  • 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(2):643–646.
  • 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(41):34885–34893.
  • 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(51):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.
  • Frisch MJ, Trucks GW, Schlegel HB, et al. Gaussian 09. Wallingford (CT): Gaussian; 2009.
  • Tarini M, Cignoni P, Montani C. Ambient occlusion and edge cueing to enhance real time molecular visualization. IEEE T Vis Comput Gr. 2006;12(5):1237–1244.
  • Mandle RJ, Davis EJ, Voll CCA, et al. Self-organisation through size-exclusion in soft materials. J Mater Chem C. 2015;3(10):2380–2388.
  • Emsley JW, Luckhurst GR, Shilstone GN, et al. The preparation and properties of the Alpha,Omega-Bis(4,4’-Cyanobiphenyloxy)alkanes - nematogenic molecules with a flexible core. Mol Cryst Liq Cryst. 1984;102(8–9):223–233.
  • Creed D, Gross JRD, Sullivan SL, et al. Effect of molecular-structure on mesomorphism .18. Twin dimers having methylene, ethylene-oxide and siloxane spacers. Mol Cryst Liq Cryst. 1987;149:185–193.
  • Paterson DA, Abberley JP, Harrison WT, et al. Cyanobiphenyl-based liquid crystal dimers and the twist-bend nematic phase. Liq Cryst. 2017;44(1):127–146.
  • Ramou E, Ahmed Z, Welch C, et al. The stabilisation of the Nx phase in mixtures. Soft Matter. 2016;12(3):888–899.
  • Dawood AA, Grossel MC, Luckhurst GR, et al. On the twist-bend nematic phase formed directly from the isotropic phase. Liq Cryst. 2016;43(1):2–12.
  • Dawood AA, Grossel MC, Luckhurst GR, et al. Twist-bend nematics, liquid crystal dimers, structure-property relations. Liq Cryst. 2017;44(1):106–126.
  • Kanesaka I, Snyder RG, Strauss HL. Experimental-determination of the trans-gauche energy difference of gaseous N-pentane and diethyl-ether. J Chem Phys. 1986;84(1):395–397.
  • Heenan RK, Bartell LS. Electron-diffraction studies of supersonic jets .4. Conformational cooling of normal-butane. J Chem Phys. 1983;78(3):1270–1274.
  • Tsuzuki S, Uchimaru T, Tanabe K. Conformational-analysis of N-alkanes using density-functional theory - comparison with Ab-initio calculations. Chem Phys Lett. 1995;246(1–2):9–12.
  • Sasanuma Y, Sugita K. The attractive gauche effect of ethylene oxides. Polym J. 2006;38(9):983–988.
  • Goodby JW, Mandle RJ, Davis EJ, et al. What makes a liquid crystal? The effect of free volume on soft matter. Liq Cryst. 2015;42(5–6):593–622.