Faculté des sciences
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Columnar Phases from Covalent and Hydrogen-Bonded Liquid-Crystalline Ferrocene Derivatives

Deschenaux, Robert ; Monnet, Florence ; Serrano, Elisabeth ; Turpin, François ; Levelut, Anne-Marie

In: Helvetica Chimica Acta, 1998, vol. 81, no. 11, p. 2072-2077

The synthesis and liquid-crystalline properties of tetracatenar covalent and H-bonded bis-ferrocene derivatives 1 and 2, respectively, are reported. Both compounds gave rise to enantiotropic columnar liquid-crystalline behavior with a hexagonal molecular organization. To explore the possibility to obtain also calamitic liquid-crystalline phases from H-bonded ferrocene-containing liquid crystals,... More

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    Title
    • Columnar Phases from Covalent and Hydrogen-Bonded Liquid-Crystalline Ferrocene Derivatives
    Author
    • Deschenaux, Robert. Institut de Chimie, Université de Neuchâtel, Switzerland
    • Monnet, Florence. Institut de Chimie, Université de Neuchâtel, Switzerland
    • Serrano, Elisabeth. Institut de Chimie, Université de Neuchâtel, Switzerland
    • Turpin, François. Institut de Chimie, Université de Neuchâtel, Switzerland
    • Levelut, Anne-Marie. Université Paris-Sud, Laboratoire de Physique des Solides, Orsay, France
    Document Type
    • Postprint
    Publication Date
    • 1998
    OAI-PMH Identifier
    • oai:doc.rero.ch:20080227095014-OF
    Submission No.
    • 20080227095014-OF
    Summary
    The synthesis and liquid-crystalline properties of tetracatenar covalent and H-bonded bis-ferrocene derivatives 1 and 2, respectively, are reported. Both compounds gave rise to enantiotropic columnar liquid-crystalline behavior with a hexagonal molecular organization. To explore the possibility to obtain also calamitic liquid-crystalline phases from H-bonded ferrocene-containing liquid crystals, a rod-shaped ferrocene mesogen 3 was synthesized, which gave rise to enantiotropic smectic C and smectic A phases. For the first time, a rational synthetic design at the ferrocene level led to ferrocene-based liquid-crystals with columnar behavior and to H-bonded metallomesogens.