framework was selected for the formation of C 60 derivative; (2) to lower the
transition temperatures, a flexible chain was used as a spacer between the cholesterol
derivative and the C 60 moiety; and (3) owing to the well-established synthetic
procedure, the formation of a methanofullerene was chosen to connect the cholesterol fragment to the C 60 (Chuard and Deschenaux 1996).
The targeted fullerene derivative 1 showed a monotropic smectic A phase.
Following this strategy, Deschenaux et al. introduced ferrocene and fullerene
together in the LC, with some of the structure presented in Fig. 2 (2 and 3)
(Deschenaux et al. 1998). The design of liquid crystalline fullerene-ferrocene compounds is attractive since such structures lead to new multicomponent mesomorphic
materials. The mixed fullerene-ferrocene thermotropic liquid crystal 2 represents the
first member of this new family of mesomorphic materials. More fullereneFig. 2 Molecular structure of the first fullerene-containing liquid crystal (1) and fullereneferrocene compound (2, 3)
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153
transition temperatures, a flexible chain was used as a spacer between the cholesterol
derivative and the C 60 moiety; and (3) owing to the well-established synthetic
procedure, the formation of a methanofullerene was chosen to connect the cholesterol fragment to the C 60 (Chuard and Deschenaux 1996).
The targeted fullerene derivative 1 showed a monotropic smectic A phase.
Following this strategy, Deschenaux et al. introduced ferrocene and fullerene
together in the LC, with some of the structure presented in Fig. 2 (2 and 3)
(Deschenaux et al. 1998). The design of liquid crystalline fullerene-ferrocene compounds is attractive since such structures lead to new multicomponent mesomorphic
materials. The mixed fullerene-ferrocene thermotropic liquid crystal 2 represents the
first member of this new family of mesomorphic materials. More fullereneFig. 2 Molecular structure of the first fullerene-containing liquid crystal (1) and fullereneferrocene compound (2, 3)
6 Fullerene Liquid Crystals
153