title: Photoresponsive block copolymers containing azobenzenes and other chromophores.
abstract: Photoresponsive block copolymers (PRBCs) containing azobenzenes and other chromophores can be easily prepared by controlled polymerization. Their photoresponsive behaviors are generally based on photoisomerization, photocrosslinking, photoalignment and photoinduced cooperative motions. When the photoactive block forms mesogenic phases upon microphase separation of PRBCs, supramolecular cooperative motion in liquid-crystalline PRBCs enables them to self-organize into hierarchical structures with photoresponsive features. This offers novel opportunities to photocontrol microphase-separated nanostructures of well-defined PRBCs and extends their diverse applications in holograms, nanotemplates, photodeformed devices and microporous films.
authors.affiliation: Top Runner Incubation Center for Academia-Industry Fusion, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188, Japan. yuhaifeng@mst.nagaokaut.ac.jp
authors.forename: Haifeng
authors.initials: H
authors.lastname: Yu
authors.forename: Takaomi
authors.initials: T
authors.lastname: Kobayashi
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D008027:Light; D049329:Nanostructures / Q000737:chemistry; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry* / Q000302:isolation & purification; D016062:Porosity / Q000528:radiation effects
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D011108:Polymers; C009850:azobenzene