Lee, Myongsoo published the artcileInduction of Thermotropic Liquid Crystalline Phases in Coil-Rod-Coil Triblock Molecules Containing Poly(propylene oxide) through Complexation with LiCF3SO3, Synthetic Route of 50670-76-3, the publication is Chemistry of Materials (1998), 10(7), 1894-1903, database is CAplus.
The preparation and thermotropic phase behavior of coil-rod-coil triblock mols. of dodecyl 4-(4-oxy-4′-biphenylcarbonyloxy)-4′-biphenylcarboxylate with poly(propylene oxide) of seven (7-22) and twelve (12-22) propylene oxide subunits and the complexes of the triblock mols. with LiCF3SO3 are presented. Both 7-22 and 12-22 appear to be crystalline solids. However, the complexation of 7-22 and 12-22 with LiCF3SO3 induces an enantiotropic liquid crystalline phase. The complexes of 7-22 with 0.05-0.20 mol of LiCF3SO3 per propylene oxide unit exhibit an enantiotropic smectic A mesophase. In contrast, a significant phase change is observed upon complexation of 12-22 with LiCF3SO3. The complex of 12-22 with 0.10 mol of LiCF3SO3 exhibits a smectic A mesophase. However, the complexes with 0.15-0.30 mol of LiCF3SO3 display a hexagonal columnar mesophase. The thermal stability of the mesophase exhibited by the Li complexes based on each triblock mol. increases with increasing salt concentration This behavior is attributed to the dynamics of ionic association resulting from specific interactions between the ether oxygens and the cations. These results, characterized by a combination of techniques consisting of differential scanning calorimetry, thermal optical microscopy, and Raman spectroscopy, are discussed.
Chemistry of Materials published new progress about 50670-76-3. 50670-76-3 belongs to esters-buliding-blocks, auxiliary class Benzene,Phenol,Ester, name is Ethyl 4′-hydroxy-[1,1′-biphenyl]-4-carboxylate, and the molecular formula is C15H14O3, Synthetic Route of 50670-76-3.
Referemce:
https://en.wikipedia.org/wiki/Ester,
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