Title :
Photoinduced Optical Anisotropy in Modified Polyimides
Author :
Hamciuc, E. ; Sava, I. ; Bruma, M. ; Kopnick, T. ; Stumpe, J.
Author_Institution :
Inst. of Macromolecular Chem.
Abstract :
New poly(amide-imide)s containing cinnamoyl and azobenzene units have been synthesized by direct polycondensation reaction of two diacids having preformed cinnamoyl units and a diamine incorporating azobenzene groups, 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
Keywords :
anisotropic media; optical films; optical polymers; radiation effects; azobenzene groups; azobenzene units; cinnamoyl units; condensing agents; diacids having; diamine; direct polycondensation reaction; irradiation; modified polyimides; optical film; organic solvents; photoinduced optical anisotropy; polyamides; polymers; pyridine; thermal stability; thin films; triphenyl phosphite; Anisotropic magnetoresistance; Casting; Geometrical optics; Optical films; Optical polarization; Optical polymers; Polyimides; Polymer films; Solvents; Thermal stability; azobenzene; cinnamoyl; optical anisotropy; poly(amide-imide) s; thermal amplification;
Conference_Titel :
International Semiconductor Conference, 2006
Conference_Location :
Sinaia
Print_ISBN :
1-4244-0109-7
DOI :
10.1109/SMICND.2006.283998
