Liquid-Crystalline State of Cholesterol-Containing Monomers

Liquid Crystalline Hydrogels: Mesomorphic Behavior of Amphiphilic Polyacrylates Bearing Cholesterol Mesogen

“…SAXD patterns of poly(Ch5A) and poly(Ch5A- co -AA)s were taken to evaluate the layer spacing and the long-range ordering (Figure a). In poly(Ch5A) ( F = 1.0), a small peak is detected at 2θ = 1.8° corresponds to a spacing of 50 Å, d 2 , which agrees with the bilayer thickness shown in the literature . The peak shifted toward the smaller angle with a decrease in F and increased its sharpness until F = 0.20, indicating that incorporation of an appropriate amount of AA units into the poly(Ch5A) enhanced the structural ordering, but reduced its sharpness below that.…”

“…T c and T g of poly(Ch5A- co -AA)s were determined by DSC thermograms. Transition temperatures of poly(Ch5A) were lower than those shown in the literature, , presumably due to the lower molecular weight, but were comparable with those of poly(11CBA) . Transition temperatures of poly(Ch5A- co -AA)s gradually increased with decreasing F down to 0.20, which is also similar phenomenon as the case of poly(11CBA- co -AA)s .…”

“…Materials. Cholesteryl-6-acryloyloxyhexanate (Ch5A) was prepared according to the procedures described in the literature . Acrylic acid (AA; TCI) was purified by distillation under reduced pressure.…”

Fluorescence studies of the self-organization of a cholesterol-bearing polymethacrylate inn-hexane solution

“…It is also known that Chol forms thermotropic LC phases. [2][3][4] Several groups have reported that comb-like polymers, in which Chol groups are linked to the main chain via flexible spacers, form thermotropic LC phases at elevated temperatures. [5][6][7] An interesting aspect of such polymer-bound mesogens is that lyotropic mesophases may be formed in solution, owing to the microphase separation of polymers in a selective solvent, 8 a good solvent for mesogenic groups and a poor solvent for the polymer chain, or vice versa.…”

A Novel Liquid-Crystalline Vinylcyclopropane-Derivative Bearing Cholesterol: Synthesis and Polymerization

“…[4,5] 1-Ethoxycarbonyl-2-vinylcyclopropane-carboxylic acid (1) was provided by Ivoclar-Vivadent and used as received. [4,5] 1-Ethoxycarbonyl-2-vinylcyclopropane-carboxylic acid (1) was provided by Ivoclar-Vivadent and used as received.…”