Figure 4
From: New strategies and implications for the photoalignment of liquid crystalline polymers
Schematic diagrams for the strategy to attain the in-plane orientation of photoresponsive (mostly azobenzene) mesogens. (a) Spincast films of liquid crystal (LC) polymers with side-on type mesogens. (b) Spincast films of main chain LC polymers. (c) Side chain LC polymers grafted onto the substrate surface. (d) Side chain LC polymers of block copolymer grafted onto the substrate surface via an amorphous spacer layer. (e) Planar orientation of mesogens by block copolymers constrained to an ultrathin film. (f) Induction of planar orientation by the modification of a free surface layer. A full color version of this figure is available at Polymer Journal online.
