抄録
Two types of photofunctional materials based on well-defined azobenzene LC polymers were developed. Diblock copolymers consisting of an LC unit and an amorphous unit were prepared by ATRP as holographic materials. Effect of microphase separation on photoisomerization and photoinduced alignment behavior as well as on holographic properties was explored in details. Furthermore, bilayer films composed with a crosslinked azobenzene LC polymer layer and a flexible polymer layer were fabricated by surface-initiated ATRP as photomobile materials. The bending direction of the films could be selected by a change in polarization direction of incident UV light due to in-plane aligned mesogens with a polydomain structure. This is the first example of fabrication of photomobile polymers based on azobenzene LC polymer brushes tethered on polymer substrates.
