The Problems of Polymorphism in Liquid Crystals

Sackmann, H.; Demus, D.

doi:10.1080/15421407308083321

Cited by 170 publications

(31 citation statements)

References 53 publications

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“…This behaviour is an indication that only orthogonal smectic phases can form induced smectic phases, whereas tilted smectic phases do not show this property. The ob served phase sequence N, Sa, Sb and Se of the in duced phases is in accordance with the phase se quence of pure components as stated by Sackmann and Demus [15].…”

Section: Resultssupporting

confidence: 86%

Induced Smectic Phases I. Polymorphism in Binary Mixtures of Alkyloxybenzylidene-alkylanilines with Alkyl- and Alkyloxy- cyanobiphenyls

Schneider

Sharma

1981

Zeitschrift Für Naturforschung A

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Section: Resultssupporting

confidence: 86%

Induced Smectic Phases I. Polymorphism in Binary Mixtures of Alkyloxybenzylidene-alkylanilines with Alkyl- and Alkyloxy- cyanobiphenyls

Schneider

Sharma

1981

Zeitschrift Für Naturforschung A

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“…For the structural identification of mesophases of some com pounds, we additionally used the shear deformation method, 26 which makes it possible to reveal specific features of textures of mesogenic samples by miscibility. 11 Liotropic mesomorphism was studied using contact preparations.…”

Section: Methodsmentioning

confidence: 99%

Synthesis and specific features of mesomorphic behavior of new polysubstituted triphenylenes

Zemtsova

Zheleznov

2004

Russ Chem Bull

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Previously unknown 2,3,6,7,10,11 hexakis(dodecyloxy)triphenylene and (tetradecyl oxy)triphenylene were synthesized. The structures of the synthesized compounds were proved by elemental analysis and spectral methods. Polymesomorphism was found for the first time and studied for substances of the hexaalkoxytriphenylene homologic series, as well as liotropic mesomorphism in a series of organic solvents.

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“…durch eine gr6~ere Zahl von Phasenumwandlungen, bis zu 5, im untersuchten Temperaturbereich auszeichnen. W~ihrend die neat-Phase sehr gut polarisationsmikroskopisch an Hand ihrer typischen F~icher-textur erkannt werden kann und durch Baum et al [2] [3,4]. Die Zahl der Beispiele ihrer Anwendung auf Systeme mit organischen Salzen als Mischungskomponenten ist gering [2,5].…”

Section: Introductionunclassified

Systematisierung der Tieftemperaturmodifikationen homologer Thallium(I)-Salze aliphatischer Carbons�uren durch ihre Mischbarkeitsbeziehungen

Lindau

Knig

Drfler

1983

Colloid & Polymer Sci

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Zusammenfassung: Durch Analyse der Mischbarkeitsbeziehimgen an 12 bin~iren Systemen der Thalliumseifen T1C9 bis T1C18, T1C20 und TIC= wurde eine Zuordnung der Modifikationen, die sich temperaturabw~irts an das Existenzgebiet der neat-Phase anschlief~en, vorgenommen. Damit wird eine neue Bezeichnung der Phasen erm6glicht, die sich dadurch auszeichnet, daf~ die durch gleiche Symbolik gekennzeichneten Phasen auch Phasen des gleichen Phasentyps sind. Bis zum TLC16 betr~igt die Phasenfolge Phase II, Phase I, neat-Phase, isotrope Fliissigkeit, ab T1C17 Phase II, neat-Phase, isotrope Fliissigkeit. Die Gewinnung der Zustandsdiagramme erfolgte dabei durch kalorimetrische Bestimmung der Umwandlungen singuliirer Konzentrationen.Abstract: By studying the miscibility in 12 binary systems of the thalliumsoaps T1C9 to T1C1s, TIC20 and T1C22 the low-temperature modifications were classified. The members with shorter hydrocarbon chains up to T1C16 have the following phase sequence:phase II, phase I, nea~-phase, isotropic liquid, whereas from T1C~7 the sequence is: phase II, nearphase, isotropic liquid. Modifications of the same type are indicated by identical symbols.

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The Problems of Polymorphism in Liquid Crystals

Cited by 170 publications

References 53 publications

Induced Smectic Phases I. Polymorphism in Binary Mixtures of Alkyloxybenzylidene-alkylanilines with Alkyl- and Alkyloxy- cyanobiphenyls

Induced Smectic Phases I. Polymorphism in Binary Mixtures of Alkyloxybenzylidene-alkylanilines with Alkyl- and Alkyloxy- cyanobiphenyls

Synthesis and specific features of mesomorphic behavior of new polysubstituted triphenylenes

Systematisierung der Tieftemperaturmodifikationen homologer Thallium(I)-Salze aliphatischer Carbons�uren durch ihre Mischbarkeitsbeziehungen

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