title: Solvent induced amplification of the photoresponsive properties of α,ω-di-[4-cyanophenyl-4'-(6-hexyloxy)-azobenzene]-poly(N-isopropylacrylamide) in aqueous media.
abstract: Irradiation at room temperature of α,ω-di-[4-cyanophenyl-4'-(6-hexyloxy)-azobenzene]-poly-(N-isopropylacrylamide) (Az(2)-PNIPAM) solutions in water/1,4-dioxane (6 mol% dioxane) reversibly converts a turbid suspension into a clear solution, demonstrating for the first time that cononsolvency of PNIPAM in mixed aqueous solvents in synergy with preferential chromophore solvation can act as actuators of responsive systems.
authors.affiliation: Chemical Resources Laboratory, Tokyo Institute of Technology, R1-11, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
authors.forename: Norihito
authors.initials: N
authors.lastname: Ishii
authors.forename: Jun-ichi
authors.initials: J
authors.lastname: Mamiya
authors.forename: Tomiki
authors.initials: T
authors.lastname: Ikeda
authors.forename: Françoise M
authors.initials: FM
authors.lastname: Winnik
mesh_terms: D000178:Acrylamides / Q000737:chemistry*; D000180:Acrylic Resins; D001391:Azo Compounds / Q000737:chemistry*; D004146:Dioxanes / Q000737:chemistry; D055668:Photochemical Processes; D011108:Polymers / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D000178:Acrylamides; D000180:Acrylic Resins; D001391:Azo Compounds; D004146:Dioxanes; D011108:Polymers; D012997:Solvents; C557744:alpha,omega-di-(4-cyanophenyl-4'-(6-hexyloxy)-azobenzene)-poly-(N-isopropylacrylamide); D014867:Water; C052970:poly-N-isopropylacrylamide