Macromolecular Research, Vol.22, No.7, 725-730, July, 2014
Polarimetry-Controlled Fluorescent Color in Oriented LC Biopolyesters
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Oriented films of the thermotropic liquid-crystalline (LC) polymer, poly{3-benzylidene amino-4-
hydroxybenzoic acid (3,4-BAHBA)-co-trans-4-hydroxycinnamic acid (4HCA)} (Poly(3,4-BAHBA-co-4HCA)), were prepared by shearing the LC melt. X-Ray and polarized microscopy analyses indicated that the main chains were oriented perpendicularly to the shear direction, and the benzylidene amino side chains were parallely oriented. Furthermore, the oriented film showed polarized fluorescence in which the analyzer rotation changed the emission color when the
polarizer was set perpendicular to the sheared direction.
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