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Abstract:

In spite of the apparent contradiction between ‘liquid crystals’ (LC, materials exhibiting some degree of disorder) and ‘crystallography’ (a paradigmatic ordered kingdom), X-ray diffraction (XRD) studies make a substantial contribution to the field of LC. Focusing this review on smectic (Sm, lamellar) LC, we first describe how extremely careful XRD studies performed on mono-domain samples in the LC phase helped to elucidate the molecular structure of ordered Sm phases. Then, we describe selected examples in which single-crystal (SC) XRD on the solid-state phase of the mesogens provided information about their supra-molecular organization in the Sm phase. Finally, we present a different approach to this problem in the case of a thermo-tropic Schiff base (SB) which undergoes crystal ↔ LC ↔ isotropic liquid phase transformations. By combined SC and variable-temperature powder XRD, we show that the SB LC is a hexatic smectic B phase that derives from the crystal phase by relatively small topological changes promoted by the set-in of thermal rotational disorder around the long SB molecular axis. © 2017 Informa UK Limited, trading as Taylor & Francis Group.

Registro:

Documento: Artículo
Título:Crystallography and the liquid crystal phase: a new approach to structural studies on a thermo-tropic smectic Schiff base
Autor:Piro, O.E.; Echeverría, G.A.; Cukiernik, F.D.
Filiación:Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata and Institute IFLP (CONICET, CCT-La Plata), La Plata, Argentina
INQUIMAE (Conicet-UBA) and DQIAQF, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, CABA, Argentina
Palabras clave:Liquid crystals; powder X-ray diffraction vs. temperature; Schiff base; single-crystal X-ray diffraction; smectic mesophases; Crystallography; Liquid crystals; Liquids; Single crystals; X ray diffraction; Liquid crystal phase; Molecular organization; Powder X ray diffraction; Schiff-base; Single crystal x-ray diffraction; Smectic mesophases; Topological changes; Variable temperature; X ray crystallography
Año:2018
Volumen:24
Número:1
Página de inicio:3
Página de fin:21
DOI: http://dx.doi.org/10.1080/0889311X.2017.1320550
Título revista:Crystallography Reviews
Título revista abreviado:Crystallogr Rev
ISSN:0889311X
CODEN:CRRVE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0889311X_v24_n1_p3_Piro

Referencias:

  • Lehmann, O., Über fliessende Kristalle (1889) Z Phys Chem, 4, pp. 462-472
  • De Gennes, P.G., Some remarks on the polymorphism of smectics (1973) Mol Cryst Liq Cryst, 21, pp. 49-76
  • Osipov, M.A., Molecular theories of liquid crystals (1998) Handbook of liquid crystals, pp. 40-71. , Demus D., Goodby J., Gray G.W., Spiess H.W., Vill V., (eds), Section 2, Chapter III, Volume 1, Weinheim: Wiley-VCH,. In:, editors.,. p
  • Mc Millan, W.L., Simple molecular theory of the smectic-C phase (1973) Phys Rev A, 8, pp. 1921-1929
  • Wulf, A., Steric model for the smectic-C phase (1975) Phys Rev A, 11, pp. 365-375
  • Cotter, M.A., Molecular theories of nematic liquid crystals (1983) Mol Cryst Liq Cryst, 97, pp. 29-47
  • De Gennes, P.G., Prost, J., (1993) The physics of liquid crystals, , Oxford: Oxford University Press
  • Velasco, E., Mederos, L., Sluckin, T.J., Molecular theory of smectic liquid crystals (1996) Liq Cryst, 20, pp. 399-409
  • Dierking, I., (2001) Textures of liquid crystals, , Weinheim: Wiley-VCH
  • Kwok, H.S., Naemura, S., Ong, H.L., (2013) Progress in liquid crystal science and technology, , Singapore: World Scientific, editors
  • Baron, M., Definitions of basic terms relating to low-molar-mass and polymer liquid crystals (2001) Pure Appl Chem, 73, pp. 845-895
  • Reinitzer, F., Beiträge zum Kenntniss des Cholesterins (1888) Monatsh Chem, 9, pp. 421-441
  • Demus, D., Chemical structure and mesogenic properties (1998) Handbook of liquid crystals, pp. 133-187. , Demus D., Goodby J., Gray G.W., Spiess H.W., Vill V., (eds), Chapter VI, Volume I, Weinheim: Wiley-VCH,. In:, editors.,. p
  • Diele, S., Manke, S., Weissflog, W., Smectic a phases with strings of interdigitated molecules in swallow tailed compounds (1989) Liq Cryst, 4, pp. 301-307. , et al
  • Hardouin, F., Levelut, A.M., Benattar, J.J., X-rays investigations of the smectic A1–smectic A2 transition (1980) Solid State Commun, 33, pp. 337-340
  • Chen, J., Bai, X., Jing, S., Self-assembly of imidazolium-based rodlike ionic liquid crystals: transition from lamellar to micellar organization (2010) Chem Eur J, 16, pp. 4588-4601. , et al
  • Pal, S.K., Raghunathan, V.A., Kumar, S., Phase transitions in novel disulphide-bridged alkoxycyanobiphenyl dimers (2007) Liq Crystallogr, 34, pp. 135-141
  • Andreu, R., Barberá, J., Garín, J., Synthesis and liquid crystal behaviour of tetrathiofulvalenes containing cyanobiphenyloxy groups (1998) J Mater Chem, 8, pp. 881-887. , et al
  • Rampon, D.S., Rodembusch, F.S., Scneider, J.M.F.M., Novel selenoesters fluorescent liquid crystalline exhibiting a rich phase polymorphism (2010) J Mater Chem, 20, pp. 715-722. , et al
  • Tschierske, C., Non-conventional liquid crystals–the importance of micro-segregation for self-organization (1998) J Mater Chem, 8, pp. 1485-1508
  • Ungar, G., Noble, K., Percec, V., X-ray diffraction study of polyphilic smectic liquid crystals (2000) J Mater Sci, 35, pp. 5241-5246. , et al
  • Hiraoka, K., Uematsu, Y., Stein, P., X-Ray diffraction studies on the phase-transformational behavior of a smectic liquid-crystalline elastomer composed of chiral mesogens (2002) Macromol Chem Phys, 203, pp. 2205-2210. , et al
  • Donnio, B., Wermter, H., Finkelmann, H., A simple and versatile synthetic route for the preparation of main-chain, liquid-crystalline elastomers (2000) Macromolecules, 33, pp. 7724-7729
  • De Gennes, P.G., Sarma, G., Tentative model for the smectic-B phase (1972) Phys Lett, 38, pp. 219-220
  • De Jeu, W.H., De Poorter, J.A., X-ray diffraction of the smectic phases of N-(p-n-heptyloxybenzylidene)-pʹ-n-pentylanyline (1977) Phys Lett, 61, pp. 114-116
  • Moncton, D.E., Pindak, R., Long-range order in two- and three-dimensional smectic-B liquid crystal films (1979) Phys Rev Lett, 43, pp. 701-704
  • Leadbetter, A.J., Mazid, M.A., Kelly, B.A., Structure of the smectic-B phase and the nature of the smectic-B to smectic-H transition in the N-(4-n-alkoxybenzylidene)-4′-alkylanilines (1979) Phys Rev Lett, 43, pp. 630-633. , et al
  • Benattar, J.J., Doucet, J., Lambert, M., Nature of the smectic-F phase (1979) Phys Rev A, 20, pp. 2505-2509. , et al
  • Pindak, R., Moncton, D.E., Davey, S.C., X-ray observation of a stacked hexatic liquid-crystal-B phase (1981) Phys Rev Lett, 46, pp. 1135-1138. , et al
  • Bruinsma, R., Aeppi, G., Hexatic order and herring-bone packing in liquid crystals (1982) Phys Rev Lett, 48, pp. 1625-1628
  • Górecka, E., Chen, L., Pyzuk, W., X-ray studies of the hexatic phase in liquid crystals with a crystal-B–hexatic-B–smectic-A phase sequence (1994) Phys Rev A, E50, pp. 2863-2867. , et al
  • De Gaetani, L., Tani, A., Sixfold bond orientational properties of a model liquid crystal in the dimensional crossover of B phases: a computer simulation study (2007) J Chem Phys, 126
  • Albertini, G., Fanelli, E., Melone, S., Evidence by X-ray diffraction for hexatic B and crystal B structures in a pure compound (1984) Solid State Commun, 49, pp. 1143-1146. , et al
  • Davey, S.C., Budai, J., Goodby, J.W., X-ray study of the hexatic-B-to-smectic-A phase transition in liquid crystal films (1984) Phys Rev Lett, 53, pp. 2129-2132. , et al
  • Sirota, E.B., Pershan, P.S., Sorensen, L.B., X-ray studies of tilted hexatic phases in thin liquid-crystal films (1985) Phys Rev Lett, 55, pp. 2039-2042. , et al
  • Collett, J., Sorensen, L.B., Pershan, P.S., X-ray scattering study of restacking transitions in the crystalline-B phases of heptyloxybenzylidene heptylanyline (1985) Phys Rev A, 32, pp. 1036-1043. , et al
  • Lobo, C.V., Prasad, S.K., Rao, D.S.S., X-ray and dielectric measurements of the smectic A–hexatic-B transition in bulk and confined geometries (2004) Phys Rev, E69
  • Pershan, P.S., Scattering from mesomorphic structures (2006) International tables for crystallography, pp. 449-465. , Shmueli U., (ed), Volume B, Chapter 4.4, London: Kluwer,. In:, editor.,. p
  • Watson, J.D., Crick, F.H.C., A structure for deoxyribose nucleic acid (1953) Nature, 171, pp. 737-738
  • Franklin, R.E., Gosling, R.G., The structure of sodium thymonucleate fibres. II. The cylindrically symmetrical Patterson function (1953) Acta Crystallogr, 6, pp. 678-685
  • Elliott, J.M., Chipperfield, J.R., Clark, S., Criteria for liquid crystal formation in 5-alkoxy-, 5-alkylamino, and 5-alkanoyl-tropolone complexes of transition metals (CuII, ZnII, NiII, CoII, UO2VI, VOIV). The first uranium metallomesogen. Crystal structure of bis(5-hexadecyloxytropolonato)copper(II) (2002) Inorg Chem, 41, pp. 293-299. , et al
  • Montani, R.S., Hegguilustoy, C.M., Del Rosso, P.G., 4′-(2-(2-Ethoxyethoxy)ethoxy)biphenyl-4-carboxylic acid-a polar smectogen for amphipathic liquid crystals (2009) Tetrahedron Lett, 50, pp. 5231-5234. , et al
  • Montani, R.S., Garay, R.O., Cukiernik, F.D., 4′-[2-(2-Ethoxyethoxy)ethoxy]biphenyl-4-carboxylic acid: correlation between its crystalline and smectic phases (2009) Acta Crystallogr, 100, pp. o81-o84. , et al
  • Mills, J.T., Gleeson, H.F., Goodby, J.W., X-ray and optical studies of the tilted phases of materials exhibiting antiferroelectric, ferrielectric and ferroelectric mesophases (1998) J Mater Chem, 8, pp. 2385-2390. , et al
  • Cotrait, M., Gaultier, J., Polycarpe, C., Structure d’un complèxe de métal de transition smectique: Le Bis{[(octy-4phényl)-1-éthylènedithiolato-1,2](2-)-S,S′}nickel, C32H44NiS4 (1983) Acta Crystallogr, 100, pp. 833-835. , et al
  • Kuz’mina, L.G., Kucherepa, N.S., Pestov, S.M., Molecular and crystal structure of 4-alkoxybenzoic acids: design of the mesogenic phase (2009) Crystallogr Rep, 54 (5), pp. 862-879
  • Neve, F., Francescangeli, O., Crispini, A., A2[MX4] copper(II) pyridinium salts. From ionic liquids to layered solids to liquid crystals (2001) Chem Mater, 13, pp. 2032-2041. , et al
  • Adams, H., Bailey, N.A., Bruce, D.W., Mesomorphic stilbazole complexes of silver octyl sulfate (1992) J Mater Chem, 2, pp. 395-400. , et al
  • Guillon, D., Bruce, D.W., Maldivi, P., EXAFS studies of some alkoxydithiobenzoate complexes of Zn(II) and Pd(II) in their liquid-crystal phases (1994) Chem Mater, 6, pp. 182-189. , et al
  • Neve, F., Ghedini, M., Levelut, A.M., Ionic metallomesogens. Lamellar mesophases in Cu(I) azamacrocyclic complexes (1994) Chem Mater, 6, pp. 70-76. , et al
  • Neve, F., Ghedini, M., De Munno, G., Ionic amphiphilic metallomesogens (1995) Chem Mater, 7, pp. 688-693. , et al
  • Serrette, A., Carroll, P.J., Swager, T.M., Tunning the intermolecular dative interaction in vanadium-oxo linear chain compounds: formation of a new type of liquid crystalline polymers (1992) J Am Chem Soc, 114, pp. 1887-1889
  • Willis, K., Price, D.J., Adams, H., Hydrogen-bonded liquid crystals from alkoxystilbazoles and 3-cyanophenols: structural control of mesomorphism. Molecular structure of the complex between 4-cyanophenol and 4-octyloxystilbazole (1995) J Mater Chem, 5, pp. 2195-2199. , et al
  • Bruce, D.W., Liquid crystals formed from specific intermolecular interactions (2012) Supramolecular chemistry: from molecules to nanomaterials, 7, pp. 3493-3514. , Gale P.A., Steed J.W., (eds), Oxford: Wiley,. In:, editors.,. p
  • Nguyen, H.L., Horton, P.N., Hursthouse, M.B., Halogen bonding: a new interaction for liquid crystal formation (2004) J Am Chem Soc, 126, pp. 16-17. , et al
  • Cho, C.M., Wang, X., Li, J.J., Synthesis and self-assembly of halogen-bond donor-spacer-hydrogen-bond donor molecules: polymeric liquid crystals induced by combination of intermolecular halogen and hydrogen-bonding interactions (2013) Liq Crystallogr, 40, pp. 185-196. , et al
  • Rocha, M., Di Santo, A., Echeverria, G.A., Supramolecular self-assembly of a new multi-conformational Schiff base through hydrogen bonds: crystal structure, spectroscopic and theoretical investigation (2017) J Mol Struct, 1133, pp. 24-36. , et al
  • Farrugia, L.J., ORTEP-3 for windows–a version of ORTEP-III with a graphical user interface (GUI) (1997) J Appl Crystallogr, 30, p. 565
  • Farrugia, L.J., WinGX suite for small-molecule single-crystal crystallography (1999) Appl Crystallogr, 32, pp. 837-838
  • Sheldrick, G.M., A short history of SHELX (2008) Acta Crystallogr, 64, pp. 112-122
  • Yvon, K., Jeitschko, W., Parthe, E., LAZY PULVERIX–a computer program for calculating theoretical X-ray and neutron diffraction powder patterns (1977) J Appl Crystallogr, 10, pp. 73-74

Citas:

---------- APA ----------
Piro, O.E., Echeverría, G.A. & Cukiernik, F.D. (2018) . Crystallography and the liquid crystal phase: a new approach to structural studies on a thermo-tropic smectic Schiff base. Crystallography Reviews, 24(1), 3-21.
http://dx.doi.org/10.1080/0889311X.2017.1320550
---------- CHICAGO ----------
Piro, O.E., Echeverría, G.A., Cukiernik, F.D. "Crystallography and the liquid crystal phase: a new approach to structural studies on a thermo-tropic smectic Schiff base" . Crystallography Reviews 24, no. 1 (2018) : 3-21.
http://dx.doi.org/10.1080/0889311X.2017.1320550
---------- MLA ----------
Piro, O.E., Echeverría, G.A., Cukiernik, F.D. "Crystallography and the liquid crystal phase: a new approach to structural studies on a thermo-tropic smectic Schiff base" . Crystallography Reviews, vol. 24, no. 1, 2018, pp. 3-21.
http://dx.doi.org/10.1080/0889311X.2017.1320550
---------- VANCOUVER ----------
Piro, O.E., Echeverría, G.A., Cukiernik, F.D. Crystallography and the liquid crystal phase: a new approach to structural studies on a thermo-tropic smectic Schiff base. Crystallogr Rev. 2018;24(1):3-21.
http://dx.doi.org/10.1080/0889311X.2017.1320550