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Université de Neuchâtel

Synthesis, Characterization, and Mesomorphic Properties of a Mixed [60]Fullerene−Ferrocene Liquid-Crystalline Dendrimer

Dardel, Blaise ; Deschenaux, Robert ; Even, Michael ; Serrano, Elisabeth

In: Macromolecules, 1999, vol. 32, no. 16, p. 5193-5198

Addition reaction of the malonate-based second-generation ferrocene-containing liquid-crystalline dendrimer 16 to [60]fullerene led to the title compound 1. Molecule 1 showed good solubility in common organic solvents and good thermal stability. Examination of its mesomorphic properties revealed the presence of an enantiotropic smectic A phase, which was identified by...

Université de Neuchâtel

Ferrocene-containing liquid-crystalline dendrimers: a novel family of mesomorphic macromolecules

Deschenaux, Robert ; Serrano, Elisabeth ; Levelut, Anne-Marie

In: Chemical Communications (ChemComm), 1997, vol. 16, p. 1577-1578

The synthesis and liquid-crystalline properties of a first-generation dendritic core substituted with six mesomorphic ferrocene units are reported; the investigated compound exhibited a broad enantiotropic smectic A phase (polarized optical microscopy, DSC, and XRD studies) and good thermal stability (thermogravimetry).

Université de Neuchâtel

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,...