New poly(amide-imide)s containing cinnamoyl and azobenzene groups
- Hamciuc, E.
- Sava, I.
- Bruma, M.
- Köpnick, T.
- Schulz, B.
- Sapich, B.
- Wagner, J.
- Stumpe, J.
DOIAbstract
Two new poly(amide-imide)s containing cinnamoyl and azobenzene units have been synthesized by direct polycondensation reaction of two diacids having cinnamoyl units and a diamine incorporating azobenzene group, using triphenyl phosphite and pyridine as condensing agents. The polymers were readily soluble in various organic solvents and gave thin films by casting from such solutions. They showed good thermal stability. A highly anisotropic optical film was fabricated by irradiation with linearly polarized light and its stability was studied
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