Photo-induced Holographic Gratings: A New Azobenzene-Functionalized Perfluorocyclobutyl (PFCB) Polymer

摘要

Azo polymers are polymers that have -N=N- (azo) group either ithin the polymer backbone or a covalently attached azo- hromophore to the backbone. The synthesis of some azo polymers nd their isomerization has been has been studied for years and eviewed in many places The formation of holographic surface relief ratings (SRGs) on azobenzene-functionalized polymers has also een reported previously , The surface relief gratings formed by the ifferent polymers are stable when kept below the glass transition emperature, Tg.