Influence of molecular weight on the thermotropic mesophases of poly[6-[4-(4-methoxy-.beta.-methylstyryl)phenoxy]hexyl methacrylate]

Abstract

To our knowledge the only two examples of a characterized transition-metal complex directly attached to a conjugated organic polymer backbone are Mo(CO)3 attached to poly(pphenylene) (yaniger, S. I.;

A Liquid-Crystalline Silsesquioxane Dendrimer Exhibiting Chiral Nematic and Columnar Mesophases

“…[19c] A strict comparison of the transition temperatures is not possible since, although the degree of polymerization is above the ªmolecular weight effectº, [20] the inner segments of the mesogenic structures are not identical. But even taking this into consideration, it is remarkable that the thermal stability of the N* phase is similar for the dendrimer with respect to related polysiloxanes, suggesting that the cubic core does not perturb significantly the associations between mesogens necessary to support the N* phase; whereas the observation of the formation of columnar phases for dendrimer 1, but not for the corresponding polysiloxanes, indicates that the Si 8 O 12 core assists in the interaction of neighboring mesogenic units resulting in the formation of such disordered structures.…”

Molecular Engineering of Liquid Crystalline Polymers

“…For the case of side chain 14 9 . 153 An increase in Gk can be accomplished by any synthetic technique which increases S, i.e.…”

Jacketed polymers: Controlled synthesis of mesogen‐jacketed polymers and block copolymers

“…Most of the mesogenic groups contain functional groups (such as ester or amide links) which rule out some synthetic strategies, such as anionic and cationic polymerization. [22][23][24] Fortunately, MJLCPs can be obtained by radical polymerization.…”