Thermotrop fl�ssigkristalline Kohlenhydrat-Amphiphile

Abstract

Thermotropic Liquid Crystals Based on Amphiphilic Carbohydrates The paper gives an advanced report (related to the reviews of Jeffrey) on thermotropic mesogens based on carbohydrate amphiphiles. The different influences being responsible for the formation, stabilization, and for the type of the mesophases, such as the hydrogen bond network, the van der Waals interactions of the lipophilic chains, the regio‐ and stereochemical arrangements, and the molecular geometry are discussed more in detail. Furthermore, fluorinated sugars and selected inositol derivatives are involved in order to discuss the liquid crystalline behaviour of amphiphilic sugar mesogens.

Thermotropic and lyotropic properties of long chain alkyl glycopyranosides

“…2 (Prade et al, 1995;Blunk et al, 1998). A typical amphiphile is represented by a vertical line and usually exhibits only one mesophase, but in the case of an unusual geometry of the hydrophilic headgroup polymorphism can occur.…”

Supramolecular liquid crystals in binary and ternary systems

“…Generally, lateral substitution decreases the thermal stability of both solid and mesophases [1][2][3][4][5][6]. Supramolecular liquid crystals are frequently induced, through hydrogen bonding, between aromatic carboxylic acids, as proton donor, and pyridine-based components, as proton acceptor [7][8][9][10][11][12][13][14][15]. We have previously reported [16][17][18] the preparation and characterization of some supramolecular, hydrogen-bonded, complexes between derivatives of pyridylazophenyl substituted benzoates (as proton-acceptors) and 4-alkoxybenzoic acids (as the proton donors).…”

Synthesis and mesogenic properties of a Y-shaped glyco-glycero-lipid

“…The structures of the common lyotropic and thermotropic aggregates have been investigated extensively (Curatolo, 1987;Prade et al, 1995;Blunk et al, 1998;Jeffrey and Wingert, 1992).…”