Columnar phases from covalent and hydrogen-bonded liquid-crystalline ferrocene derivatives
Author(s)
Monnet, Florence
Serrano, Elisabeth
Turpin, Francois
Levelut, Anne-Marie
Date issued
1998
In
Helv. Chim. Acta
Vol
11
No
81
From page
2072
To page
2077
Subjects
ferrocene tetracatenar columnar liq crystal prepn phase transition enthalpy ferrocene liq crystal
Abstract
The synthesis and liq.-cryst. properties of tetracatenar covalent and H-bonded bis-ferrocene derivs. are reported. Both compds. gave rise to enantiotropic columnar liq.-cryst. behavior with a hexagonal mol. organization. To explore the possibility to obtain also calamitic liq.-cryst. phases from H-bonded ferrocene-contg. liq. crystals, a rod-shaped ferrocene mesogen was synthesized, which gave rise to enantiotropic smectic C and smectic A phases. For the 1st time, a rational synthetic design at the ferrocene level led to ferrocene-based liq.-crystals with columnar behavior and to H-bonded metallomesogens. [on SciFinder(R)]
Publication type
journal article