title: Photoinduced diffusion through polymer networks.
abstract: Photomediated addition-fragmentation chemistry is applied to demonstrate the precisely controlled diffusion of chemical species through polymer networks. Fluorescent groups connected to polymer networks by allyl sulfide moieties become mobile upon irradiation with UV light due to radical-mediated addition-fragmentation bond exchange. Photoinduced transport through the bulk, into solution, and across film interfaces is demonstrated.
authors.affiliation: Department of Chemical Engineering, University of Rochester, 206 Gavett Hall, Rochester, New York, 14627, USA.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Meng
authors.forename: Christopher R
authors.initials: CR
authors.lastname: Fenoli
authors.forename: Alan
authors.initials: A
authors.lastname: Aguirre-Soto
authors.forename: Christopher N
authors.initials: CN
authors.lastname: Bowman
authors.forename: Mitchell
authors.initials: M
authors.lastname: Anthamatten
mesh_terms: D015097:3-Mercaptopropionic Acid / Q000031:analogs & derivatives / Q000737:chemistry; D000179:Acrylates / Q000737:chemistry; D057930:Click Chemistry; D004058:Diffusion; D036681:Fluorescence Recovery After Photobleaching; D011108:Polymers / Q000737:chemistry*; D011409:Propylene Glycols / Q000737:chemistry; D012996:Solutions / Q000737:chemistry; D014466:Ultraviolet Rays
chemical_list: D000179:Acrylates; D011108:Polymers; D011409:Propylene Glycols; D012996:Solutions; C501435:pentaerythritol tetra(3-mercaptopropionate); D015097:3-Mercaptopropionic Acid; C032704:tetraethylene glycol diacrylate
keywords: fluorescence recovery after photobleaching (FRAP); mass transport; photoinduced diffusion; polymer networks; stimuli-responsive polymers