854007-54-8Relevant academic research and scientific papers
Well-defined lyotropic liquid crystalline properties of rigid-rod helical polyacetylenes
Okoshi, Kento,Sakajiri, Koichi,Kumaki, Jiro,Yashima, Eiji
, p. 4061 - 4064 (2005)
The synthesis of stereo-regular (cis-transoidal) poly(phenylacetylene)s bearing L-, D-, or racemic DL-alanine residues with a long alkyl chains as pendants (poly-L-1, poly-D-1, and poly-DL-1) was investigated. The polyacetylene was found to form well-defi
NOVEL POLYACETYLENE DERIVATIVES
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, (2008/06/13)
Novel optically active polyacetylene derivatives exhibiting liquid crystallinity; liquid crystal compositions containing the derivatives; and moldings thereof. Specifically, polyacetylene derivatives which have helical structure of rigid- rod shape and which exhibit a liquid crystal phase either in a solvent containing an organic solvent as the main component or in a molten state as well as electric field orientation; liquid crystal compositions containing the derivatives; and moldings thereof. More specifically, polyacetylene derivatives having helical structure of rigid-rod shape as represented by the general formula [1]; liquid crystal compositions containing the derivatives; and moldings thereof: wherein R1 and R2 are each independently aminocarbonyl of an amino acid having an ester linkage with C2-22 alkyl or carbonylamino of an amino acid having an amide linkage with C2-22 alkyl, the amino acid being achiral one, or chiral one of (S)- or (R)-configuration, or a racemic mixture composed of both antipodes; and X is a number satisfying the relationship: 0 X ≤ 1.
