Thermotropic liquid crystalline bimesogenic molecules with highly flexible oligosiloxane spacer

Aquilera, C.; Bernal, Luz Evelia Padilla

doi:10.1007/bf00255422

Cited by 16 publications

(1 citation statement)

References 6 publications

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“…This is in accord with the behaviour of dimers containing oligosiloxane spacers; for example Aquilera and Bernal [48] have reported the behaviour of 9 and with the exception of just one compound (n=6, x=1) these compounds are exclusively smectic. These dimers have clearing temperatures in the proximity of room temperature and considerably lower than expected for their polymethylene analogues.…”

Section: Classification Of Liquid Crystal Dimerssupporting

confidence: 78%

Liquid Crystal Dimers

Imrie

1999

Structure and Bonding

231

104

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A liquid crystal dimer is composed of molecules containing two conventional mesogenic groups linked via a¯exible spacer. These materials show quite different behaviour to conventional low molar mass liquid crystals and in particular their transitional behaviour exhibits a dramatic dependence on the length and parity of the¯exible spacer. In this review a comprehensive overview of the relationships between molecular structure and liquid crystallinity in dimers is provided. This includes a description of the novel modulated and intercalated smectic phases exhibited by dimers.

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Section: Classification Of Liquid Crystal Dimerssupporting

confidence: 78%

Liquid Crystal Dimers

Imrie

1999

Structure and Bonding

231

104

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Thermotrop kristallin‐flüssige Polymere. Der Einfluß einzelner Strukturelemente auf die kristallin‐flüssigen Eigenschaften von Polysiloxanen mit mesogenen Seitengruppen

Krücke¹,

Schlossarek²,

Zaschke³

1988

Acta Polymerica

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Struktur-Eigenschafts-Beziehungen kristallin-fldssiger Seitenkettenpolymere werden untersucht. Die Anderung der mcsomorphen Eigenscliaften bei gezielten Strukturvariationen werden dabei mit den entsprechcnden Resultaten an den Monomercn verglichen. Variicrt werden starrer mesogener Grundkorper, Spacer und Flugelgruppe. Tep.nzompon-Mudtco-tcpucmannuuecme noauaepbi. B n u n u e omaenbnb6x cmpytcmypicbrx ane~enmoe Ha acuaicoxpucmannuuecicue csoiicmsa n o m x u o m a n o s c a e 3 0 z e i t~b~~u 60li-osbk~u zpynnawuBCCJIeAOBaHa CBH3b MelK,Q' CTPYKTYPOP II CBOPCTBBMIZ lKllAKO-KpMCTaJIJIBqeCKIIX nOJIMMepOB C 6OKOBbIMM rpynnaMM. CPaBHABBIOTCR I13MeHeHHR Me30MOPl#IHbIX CBOPCTB B 3aBBCHMOCTH OT BapHaqllll CTPYKTYPbI C COOTBeTCTByIO~IZMH pe3yJIbTaTaMM AJIH MOHOMepOB. Id3MeHRIOTCR XeCTKlle Me30lXHHbIe 4parMeHTb1, Cn3CephI M r n 6~~e 60KOBbIe I'pJ'nIIbI.Therntotrop liquid crystalline polymers. The effect of the structure units on the liquid crystalline properties of polysiloxanes with mesogenic side groups T h e structure-property relationships of liquid crystalline comb-like polymers are discussed. The changes of mesomorphic properties a t specific structure variations are correlated with results from the monomers. The rigid mesogenic core, the spacer and the wing group are variated.

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References for 3

Vill¹

Transition Temperatures and Related Properties of Two-Ring Systems With Bridging Group

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Thermotropic liquid crystalline bimesogenic molecules with highly flexible oligosiloxane spacer

Cited by 16 publications

References 6 publications

Liquid Crystal Dimers

Liquid Crystal Dimers

Thermotrop kristallin‐flüssige Polymere. Der Einfluß einzelner Strukturelemente auf die kristallin‐flüssigen Eigenschaften von Polysiloxanen mit mesogenen Seitengruppen

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