title: Polyelectrolyte wrapping layers control rates of photothermal molecular release from gold nanorods.
abstract: Gold nanorods show great promise as light-controlled molecular release systems. Dye molecules were loaded within a variable number of polyelectrolyte multilayers wrapped around gold nanorods. The dye photoinduced release rate depended on the quantity and type of polyelectrolyte trapping layers and could be tuned by a factor of 100. Only two molecular capping layers were sufficient to turn off release. Comparison of the phototriggered molecular release rate to a pure thermal experiment provides an estimate of the effective temperature of the nanorod solution upon irradiation.
authors.affiliation: Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, Urbana, Illinois 61801, United States.
authors.forename: Jingyu
authors.initials: J
authors.lastname: Huang
authors.forename: Kaliah S
authors.initials: KS
authors.lastname: Jackson
authors.forename: Catherine J
authors.initials: CJ
authors.lastname: Murphy
mesh_terms: D003460:Crystallization / Q000379:methods*; D004573:Electrolytes / Q000737:chemistry* / Q000528:radiation effects; D006046:Gold / Q000737:chemistry* / Q000528:radiation effects; D006358:Hot Temperature; D008027:Light; D008422:Materials Testing; D043942:Nanotubes / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure
chemical_list: D004573:Electrolytes; D006046:Gold