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Invited Article

Dark conglomerate phases of bent-core liquid crystals

Pages 2244-2253 | Received 21 Apr 2016, Published online: 25 Jul 2016

References

  • Pasteur L. Annales de chimie et de physique. CR Acad Sci Paris. 1848;24:442–459.
  • Riehl JP. Mirror-image asymmetry: an introduction to the origin and consequences of chirality. Hoboken (NJ): Wiley-Blackwell; 2010.
  • Dierking I. Chiral liquid crystals; structures, phases, effects. Symmetry. 2014;6:444–472. doi:10.3390/sym6020444.
  • Ros MB, Serrano JL, de la Fuente MR, et al. Banana-shaped liquid crystals: a new field to explore. J Mater Chem. 2005;15:5093–5098. doi:10.1039/b504384k.
  • Takezoe H, Takanishi Y. Bent-core liquid crystals: their mysterious and attractive world. Jpn J Appl Phys. 2006;45:597–625. doi:10.1143/JJAP.45.597.
  • Reddy R, Tschierske C. Bent-core liquid crystals: polar order, superstructural chirality and spontaneous desymmetrisation in soft matter systems. J Mater Chem. 2006;16:907–961. doi:10.1039/B504400F.
  • Niori T, Sekine T, Watanabe J, et al. Distinct ferroelectric smectic liquid crystals consisting of banana shaped achiral molecules. J Mater Chem. 1996;6:1231–1233. doi:10.1039/jm9960601231.
  • deGennes PG, Prost J. The physics of liquid crystals. 2nd ed. New York (NY): Oxford University Press; 1993.
  • McMillan WL. Simple molecular theory of the smectic C phase. Phys Rev A. 1973;8:1921–1929.
  • Brand HR, Cladis PE, Pleiner H. Symmetry and defects in the CM phase of polymeric liquid crystals. Macromolecules. 1992;25:7223–7226. doi:10.1021/ma00052a025.
  • Leube HF, Finkelmann H. Optical investigations on a liquid crystalline side chain polymer with biaxial nematic and biaxial smectic A phase. Macromol Chem Phys. 1991;192:1317–1328. doi:10.1002/macp.1991.021920609.
  • Eremin A, Diele S, Pelzl G, et al. Experimental evidence for an achiral orthogonal biaxial smectic phase without in-plane order exhibiting antiferroelectric switching behavior. Phys Rev E. 2001;64:051707–1-6. doi:10.1103/PhysRevE.64.051707.
  • Nagaraj M, Panarin YP, Vij JK, et al. Liquid crystal display modes in a nontilted bent-core biaxial smectic liquid crystal. Appl Phys Lett. 2010;97:213505–1-3. doi:10.1063/1.3513832.
  • Panarin YP, Nagaraj M, Vij JK, et al. Field-induced transformations in the biaxial order of non-tilted phases in a bent-core smectic liquid crystal. Europhys Lett. 2010;92:26002–p1-p6. doi:10.1209/0295-5075/92/26002.
  • Pociecha D, Čepič M, Gorecka E, et al. Ferroelectric mesophase with randomized interlayer structure. Phys Rev Lett. 2003;91:185501–1-4. doi:10.1103/PhysRevLett.91.185501.
  • Shimbo Y, Gorecka E, Pociecha D, et al. Electric-field-induced polar biaxial order in a nontilted smectic phase of an asymmetric bent-core liquid crystal. Phys Rev Lett. 2006;97:113901–1-4. doi:10.1103/PhysRevLett.97.113901.
  • Shimbo Y, Takanishi Y, Ishikawa K, et al. Ideal liquid crystal display mode using achiral banana-shaped liquid crystals. Jap J Appl Phys. 2006;45:L282–L284. doi:10.1143/JJAP.45.L282.
  • Gomola K, Guo L, Pociecha D, et al. An optically uniaxial antiferroelectric smectic phase in asymmetrical bent-core compounds containing a 3-aminophenol central unit. J Mater Chem. 2010;20:7944–7952. doi:10.1039/c0jm01241f.
  • Panarin YP, Nagaraj M, Sreenilayam S, et al. Sequence of four orthogonal smectic phases in an achiral bent-core liquid crystal: evidence for the SmAPα phase. Phys Rev Lett. 2011;107:247801–1-4. doi:10.1103/PhysRevLett.107.247801.
  • Reddy RA, Zhu C, Shao R, et al. Spontaneous ferroelectric order in a bent-core smectic liquid crystal of fluid orthorhombic layers. Science. 2011;332:72–77. doi:10.1126/science.1197248.
  • Shen Y, Goodhew L, Shao R, et al. Field alignment of bent-core smectic liquid crystals for analog optical phase modulation. Appl Phys Lett. 2015;106:191101–191104. doi:10.1063/1.4919805.
  • Yan F, Hixson CA, Earl DJ. Computer simulations of linear rigid particles that form chiral superstructures and tilted smectic phases. Soft Matter. 2009;5:4477–4483. doi:10.1039/b911359b.
  • Kawauchi S, Choi S-W, Fukuda K, et al. Why achiral rod-like compound with ester group amplifies chiral power in chiral mesophase. Chem Lett. 2007;36:750–751. doi:10.1246/cl.2007.750.
  • Earl D, Osipov MA, Takezoe H, et al. Induced and spontaneous deracemization in bent-core liquid crystal phases and in other phases doped with bent-core molecules. Phys Rev E. 2005;71:021706–1-11. doi:10.1103/PhysRevE.71.021706.
  • Alaasar M, Prehm M, Nagaraj M, et al. A liquid crystalline phase with uniform tilt, local polar order and capability of symmetry breaking. Adv Mater. 2013;25:2186–2191. doi:10.1002/adma.201205180.
  • Alaasar M, Prehm M, May K, et al. 4-cyanoresorcinol-based bent-core mesogens with azobenzene wings: emergence of sterically stabilized polar order in liquid crystalline phases. Adv Funct Mater. 2014;24:1703–1717. doi:10.1002/adfm.v24.12.
  • Hough LE, Jung HT, Krüerke D, et al. Chiral isotropic liquids from achiral molecules. Science. 2009;325:452–456. doi:10.1126/science.1170028.
  • Dantlgraber G, Eremin A, Diele S, et al. Chirality and macroscopic polar order in a ferroelectric smectic liquid crystalline phase formed by achiral polyphilic bent-core molecules. Angew Chem Int Ed. 2002;41:2408–2412. doi:10.1002/1521-3773(20020703)41:13<2408::AID-ANIE2408>3.0.CO;2-M.
  • Dantlgraber G, Diele S, Tschierske C. The first liquid crystalline dimers consisting of two banana-shaped mesogenic units: a new way for switching between ferroelectricity and antiferroelectricity with bent-core molecules. Chem Commun. 2002;2768–2769. doi:10.1039/b209106b.
  • Thisayukta J, Nakayama Y, Kawauchi S, et al. Distinct formation of a chiral smectic phase in achiral banana-shaped molecules with a central core based on a 2,7-dihydroxynaphthalene unit. J Am Chem Soc. 2000;122:7441–7448. doi:10.1021/ja001370q.
  • Ortega J, Folcia CL, Etxebarria J, et al. Interpretation of unusual textures in the B2 phase of a liquid crystal composed of bent-core molecules. Phys Rev E. 2003;68:011707–1-4. doi:10.1103/PhysRevE.68.011707.
  • Zhang Y, Baumeister U, Tschierske C, et al. Achiral bent-core molecules with a series of linear or branched carbosilane termini: dark conglomerate phases, supramolecular chirality and macroscopic polar order. Chem Mater. 2010;22:2869–2884. doi:10.1021/cm100134f.
  • Weissflog W, Schröder MW, Diele S, et al. Field-induced formation of the polar SmCP phase above the SmCP-isotropic transition. Adv Mater. 2003;15:630–633. doi:10.1002/adma.200304570.
  • Wirth I, Diele S, Eremin A, et al. New variants of polymorphism in banana-shaped mesogens with cyano-substituted central core. J Mater Chem. 2001;11:1642–1650. doi:10.1039/b100924i.
  • Lee SK, Shi L, Tokita M, et al. Chirality transfer between weakly birefringent and electric-field-induced highly birefringent B2 phases in a bent-core mesogen. J Phys Chem B. 2007;111:8698–8701. doi:10.1021/jp0739014.
  • Chen D, Shao R, Maclennan JE, et al. Topography of bent-core liquid crystals at the air/liquid crystal interface. Liq Cryst. 2013;40:1730–1735. doi:10.1080/02678292.2013.839832.
  • Niwano H, Nakata M, Thisayukta J, et al. Chiral memory on transition between the B2 and B4 phases in an achiral banana-shaped molecular system. J Phys Chem B. 2004;108:14889–14896. doi:10.1021/jp0311355.
  • Hough LE, Jung HT, Kruerke D, et al. Helical nanofilament phases. Science. 2009;325:456–460. doi:10.1126/science.1170027.
  • Walba DM, Eshdat L, Körblova E, et al. On the nature of the B4 banana phase:  crystal or not a crystal? Cryst Growth Des. 2005;5:2091–2099. doi:10.1021/cg050282k.
  • Ocak H, Bilgin-Eran B, Prehm M, et al. Effects of molecular chirality on super-structural chirality in liquid crystalline dark conglomerate phases. Soft Matter. 2012;8:7773–7783. doi:10.1039/c2sm25763g.
  • Alaasar M, Prehm M, Tschierske C. A new room temperature dark conglomerate mesophase formed by bent-core molecules combining 4-iodoresorcinol with azobenzene units. Chem Commun. 2013;49:11062–11064. doi:10.1039/c3cc45938a.
  • Tsai E, Richardson JM, Korblova E, et al. A modulated helical nanofilament phase. Angew Chem Int Ed. 2013;52:5254–5257. doi:10.1002/anie.201209453.
  • Alaasar M, Prehm M, Brautzsch M, et al. Dark conglomerate phases of azobenzene derived bent-core mesogens – relationships between the molecular structure and mirror symmetry breaking in soft matter. Soft Matter. 2014;10:7285–7296. doi:10.1039/C4SM01255K.
  • Deepa GB, Radhika S, Sadashiva BK, et al. Electric field induced switchable dark conglomerate phases in a bent-core liquid crystal exhibiting reverse columnar phases. Phys Rev E. 2013;87:062508–1-10. doi:10.1103/PhysRevE.87.062508.
  • Deepa GB, Pratibha R. Chiral symmetry breaking dictated by electric-field-driven shape transitions of nucleating conglomerate domains in a bent-core liquid crystal. Phys Rev E. 2014;89:042504–1-10. doi:10.1103/PhysRevE.89.042504.
  • Sasaki H, Takanishi Y, Yamamoto J, et al. Induction of a DC phase between achiral trimers. J Phys Chem B. 2015;119:4531–4538. doi:10.1021/jp512710r.
  • Yoshizawa A, Kato Y, Sasaki H, et al. Twisted conformer of large and flexible achiral molecules exhibiting DC phases. Soft Matter. 2015;11:8827–8833. doi:10.1039/C5SM02121A.
  • Sasaki H, Takanishi Y, Yamamoto J, et al. Achiral flexible liquid crystal trimers exhibiting chiral conglomerates. Soft Matter. 2016;12:3331–3339. doi:10.1039/C5SM02969D.
  • Porte G, Appell J, Bassereau P, et al. Lamellar versus isotropic structures in dilute phases of fluid membranes. Phys A. 1996;176:168–186. doi:10.1016/0378-4371(91)90439-J.
  • Ortega J, Folcia CL, Etxebarria J, et al. Electric field induced phase transitions in bent-core mesogens determined by x-ray diffraction. Phys Rev E. 2011;84:021707–1-7. doi:10.1103/PhysRevE.84.021707.
  • Zhang C, Diorio N, Lavrentovich OD, et al. Helical nanofilaments of bent-core liquid crystals with a second twist. Nat Comm. 2013;5:3302. doi:10.1038/ncomms4302.
  • Nagaraj M, Usami K, Zhang Z, et al. Unusual electric field induced transformations in the dark conglomerate phase of a bent-core liquid crystal. Liq Cryst. 2014;41:800–811. doi:10.1080/02678292.2014.885602.
  • Nagaraj M, Jones JC, Panov VP, et al. Understanding the unusual reorganization of the nanostructure of a dark conglomerate phase. Phys Rev E. 2015;91:042504–1-13. doi:10.1103/PhysRevE.91.042504.
  • Jones JC. On the biaxiality of smectic C and ferroelectric liquid crystals. Liq Cryst. 2015;42:732–759.
  • Nagaraj M, Görtz V, Goodby JW, et al. Electrically tunable refractive index in the dark conglomerate phase of a bent-core liquid crystal. Appl Phys Lett. 2014;104:021903–021905. doi:10.1063/1.4861837.
  • Yoon DK, Yi Y, Shen Y, et al. Orientation of a helical nanofilament (B4) liquid-crystal phase: topographic control of confinement, shear flow, and temperature gradients. Adv Mater. 2011;23:1962–1967. doi:10.1002/adma.201004482.
  • Chen D, Zhu C, Wang H, et al. Nanoconfinement of guest materials by helical nanofilament networks of bent-core mesogens. Soft Matter. 2013;9:462–471. doi:10.1039/C2SM25997D.
  • Peeters E, Lub J, Steenbakkers JAM, et al. High contrast thin film polarizers by photo crosslinking of smectic guest host systems. Adv Mater. 2006;18:2412–2417. doi:10.1002/(ISSN)1521-4095.
  • Pintre IC, Serrano JL, Ros MB, et al. Bent-core liquid crystals in a route to efficient organic nonlinear optical materials. J Mater Chem. 2010;20:2965–2971. doi:10.1039/b923616c.
  • Folcia CL, Alonso I, Ortega J, et al. Achiral bent-core liquid crystals with azo and azoxy linkages: structural and nonlinear optical properties and photoisomerization. Chem Mater. 2006;18:4617–4626. doi:10.1021/cm060256p.
  • Lee G, Carlton RJ, Araoka F, et al. Amplification of the stereochemistry of biomolecular adsorbates by deracemization of chiral domains in bent-core liquid crystals. Adv Mater. 2013;25:245–249. doi:10.1002/adma.201203302.
  • Ueda T, Masuko S, Araoka F, et al. A general method for the enantioselective formation of helical nanofilaments. Angew Chem. 2013;52:6863–6866. doi:10.1002/anie.201300658.

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