Syntheses and Physical Properties of Ferrocene Derivatives (IV) A Study on the Smectic Structure of Ferrocene Derivatives Containing a Cholesteryl Group

Monosubstituted thermotropic ferrocenomesogens: an overview 1976-1999

“…[26][27][28][29][30] In the first series 11, a terminal ferrocenylphenyl group was joined to a cholesteryl unit via ester groups linked by an alkyl chain of varying length. 26,27 The compounds of this series (n = 2, 4, 6, 9, 10, 11) exhibited monotropic smectic phases of an unidentified nature. In the second series 12, the cholesteryl moiety was replaced by a 4-(4-methoxyphenoxycarbonyl)phenoxy group.…”

Synthesis and characterization of cholesterol-based nonsymmetric dimers terminated with ferrocenyl core

“…1,2 Ferrocene, because of its aromatic character, facilitates several substitutions whereby a range of low molecular mass calamitic (rod-like) systems can be prepared by mono-substitution, or 1,1-, 1,2-, 1,3-, di-substitution or 1,1,3-tri-substitution of the ferrocene nucleus. [3][4][5][6][7][8][9][10][11][12] However, there are few reports on mono-substituted ferrocene-based metallomesogen in recent years. 13,14 This may be partly attributed to their unfavorable molecular shape (L-shaped geometry) and to the repulsive steric effects of the ferrocene unit reducing the ability of the molecules to be arranged in layers thus favoring mostly the formation of nematic phase.…”

Synthesis and physical properties of ferrocene derivatives. XXI. Crystal structure of a liquid crystalline ferrocene derivative, 1,1'-bis[3-[4-(4-methoxyphenoxycarbonyl)phenoxy]propyloxycarbonyl]ferrocene

“…A number of papers concerned with ferrocene-containing liquid crystals have been published already. These papers deal with the thermal and mesomorphic properties of monosubstituted ferrocenes (Malthê te & Billard, 1976;Imrie et al, 2001Imrie et al, , 2003Nakamura, Hanasaki, Onoi & Oida, 1993;Hanasaki et al, 1993;Nakamura et al, 1994Nakamura et al, , 1995Nakamura & Takayama, 1997;Nakamura & Setodoi, 1998a,b, 1999aNakamura & Oida, 1999;Nakamura, Maekawahara et al, 2000;Nakamura, Setodoi & Hanasaki, 2000;Nakamura, Setodoi & Takayama, 2000;Nakamura et al, 2002;Nakamura et al, 2006a,b;Zhao et al, 2001;Deschenaux, Marendaz et al, 1995;Loubser et al, 1993;Loubser & Imrie, 1997), 1,1 0 -, 1,3-and 1,2-disubstituted ferrocenes (see next paragraph), 1,1 0 ,3-trisubstituted ferrocene derivatives (Deschenaux, Kosztics & Nocolet, 1995), polycatenar ferrocenes (Deschenaux, Monnet et al, 1998), and ferrocene-containing liquid crystalline dendromers (Carano et al, 2002;Even et al, 2001;Chuard & Deschenaux, 2003;Deschenaux et al, 1997;Dardel et al, 1999;Deschenaux, Even & Guillon, 1998;Campidelli et al, 2004) [see also the reviews by Donnio et al (2003) and Bruce et al (2007a)].…”