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Invited Article

Free volume, molecular grains, self-organisation, and anisotropic entropy: machining materials

Pages 1755-1763 | Received 04 May 2017, Published online: 11 Jul 2017

References

  • Goodby JW. Smectic liquid crystals [ PhD thesis]. University of Hull; 1977.
  • Goodby JW. Smectic polymorphism and molecular shape - the orthogonal phases. Mol Cryst Liq Cryst. 1981;75:179–199.
  • McMillan WL. Simple molecular theory of the smectic C phase. Phys Rev A. 1973;8:1921–1929.
  • Wulf A. Steric model for smectic-C phase. Phys Rev A. 1975;11:365–375.
  • Sims MT, Abbott LC, Cowling SJ, et al. Principal molecular axis and transition dipole moment orientations in liquid crystal systems: an assessment based on studies of guest anthraquinone dyes in a nematic host. Phys Chem Chem Phys. 2017;19:813–827.
  • Sims MT, Abbott LC, Cowling SJ, et al. Dyes in liquid crystals: experimental and computational studies of a guest-host system using a combined DFT and MD approach. Chem Eur J. 2015;21:10123–10130.
  • van Anders G, Klotsa D, Ahmed NK, et al. Understanding shape entropy through local dense packing. PNAS. 2014;111:E4812–E4821.
  • Greco C, Ferrarini A. Entropy-driven chiral order in a system of achiral bent particles. Phys Rev Lett. 2015;115:147801.
  • Vaupotic N, Curk S, Osipov MA, et al. Short-range smectic fluctuations and the flexoelectric model of modulated nematic liquid crystals. Phys Rev E. 2016;93:022704.
  • Chen D, Porada JH, Hooper JB, et al. Chiral heliconical ground state of nanoscale pitch in a nematic liquid crystal of achiral molecular dimers. PNAS. 2013;110:15931–15936.
  • 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.
  • 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.
  • 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.
  • Ungar G, Percec V, Zuber M. Liquid-crystalline polyethers based on conformational isomerism .20. nematic-nematic transition in polyethers and copolyethers based on 1-(4-hydroxyphenyl)-2-(2-R-4-hydroxyphenyl)ethane with R = fluoro, chloro, and methyl and flexible spacers containing an odd number of methylene units. Macromolecules. 1992;25:75–80.
  • Goodby JW, Saez IM, Cowling SJ, et al. Molecular complexity and the control of self-organising processes. Liq Cryst. 2009;36:567–605.
  • Saez IM, Goodby JW. Supermolecular liquid crystals, liquid crystalline functional assemblies and their supramolecular structures. In: Mingos DMP, Kato T, editors. Structure and bonding. Vol. 128. Springer-Verlag, Berlin Heidelberg; 2008. p. 1–62. DOI:10.1007/430_2007_077
  • Mandle RJ, Archbold CT, Sarju J, et al. The dependency of nematic and twist-bend mesophase formation on bend angle. Nature Sci Rep. 2016;6(1–12):36682.
  • Borshch V, Kim Y-K, Xiang J, et al. Nematic twist-bend phase with nanoscale modulation of molecular orientation. Nature Commun. 2013;4:2635.
  • Paterson DA, Gao M, Kim Y-K, et al. Understanding the twist-bend nematic phase: the characterisation of 1-(4-cyanobiphenyl-40-yloxy)-6-(4-cyanobiphenyl-40-yl)hexane (CB6OCB) and comparison with CB7CB. Soft Matter. 2016;12:6827–6840.
  • Zhu C, Tuchband MR, Young A, et al. Resonant carbon K-edge soft x-ray scattering from lattice-free heliconical molecular ordering: soft dilative elasticitiy of the twist-bend liquid crystal phase. Phys Rev Lett. 2016;116:147803.
  • Wang Y, Singh G, Agra-Kooijman DM, et al. Room temperature heliconical twist-bend nematic liquid crystal. Cryst Eng Comm. 2015;17:2778–2782.
  • Mandle RJ, Goodby JW. Does topology dictate the incidence twist-bend phase? Insights gained from novel, unsymmetrical bimesogens. Chem Eur J. 2016;22:18456–18464.
  • 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.
  • 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.
  • Zhang Z, 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.
  • Jokissari JP, Luckhurst GR, Timimi BA, et al. Twist-bend nematic phase of the liquid crystal dimer CB7CB: orientational order and conical angle determined by 129Xe and 2H NMR spectroscopy. Liq Cryst. 2015;42:708–721.
  • 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.
  • 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.
  • 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.
  • 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.
  • Ivsic T, Baumeister U, Dokli I, et al. Sensitivity of the N-TB phase formation to the molecular structure of imino-linked dimers. Liq Cryst. 2017;44(1):93–105.
  • Dawood AA, Grossel MC, Luckhurst GR, et al. Twist-bend nematics, liquid crystal dimers, structure-property relations. Liq Cryst. 2017;44(1):106–126.
  • 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.
  • Simpson FP, Mandle RJMoore JN. Investigating the cusp between the nano- and macro-sciences in supermolecular liquid-crystalline twist-bend mematogens. J Mater Chem C. 2017;5:5102–5110.
  • Attard GS, Date RW, Imrie CT, et al. Non-symmetric dimeric liquid crystals: the preparation and properties of the α-(4-cyanobiphenyl-4′-yloxy)-ω-(4-n-alkylanilinebenzylidene-4′-oxy)alkanes. Liq Cryst. 1994;16:529–581.
  • Hegguilustoy CM, Darda MB, Montani RS, et al. Symmetric bent-shaped liquid crystal dimers showing transitions between optically uniaxial and biaxial smectic phases. Liq Cryst. 2015;42:1013–1023.
  • Fox TG, Flory PJ. Second-order transition temperatures and related properties of polystyrene. I. Influence of molecular weight. J Appl Phys. 1950;21:581–591.
  • Gibbs JH, DiMarzio EA. Nature of the glass transition and the glassy state. J Chem Phys. 1958;28:373–383.
  • 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.
  • Livolant F, Bouligand Y. Liquid crystalline phases given by helical biological polymers (DNA, PBLG and Xanthan), columnar textures. J Phys. 1986;47:1813–1827.
  • Barry E, Hensel Z, Dogic Z, et al. Entropy-driven formation of a chiral liquid-crystalline phase of helical filaments. Phys Rev Lett. 2006;96(1–4):018305.
  • Cifelli M, Domenici V, Dvinskikh SV, et al. The twist-bend nematic phase: translational self-diffusion and biaxiality studied by 1H nuclear magnetic resonance diffusometry. Liq Cryst. 2016;44:204–218.
  • Luckhurst GR. Liquid crystal dimers and oligomers: experiment and theory. Macromol Symp. 1995;96:1–26.