title: Nanorod-coated PNIPAM microgels: thermoresponsive optical properties.
abstract: Nanoparticles and in particular gold nanorods have interesting optical properties arising from two well-differentiated plasmon modes. The frequency of such modes can be altered by their chemical environment and coupling with neighboring rods. This study investigates new composite materials made of gold nanorods adsorbed on thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) microgels. It is shown that the thermally induced collapse of the polymer network inside the particles leads to a red shift of the longitudinal plasmon band of the gold rods, which is found to be fully reversible.
authors.affiliation: Stranski-Laboratorium für Physikalische und Theoretische Chemie, TU Berlin, Strasse des 17. Juni 124, 10623 Berlin, Germany.
authors.forename: Matthias
authors.initials: M
authors.lastname: Karg
authors.forename: Isabel
authors.initials: I
authors.lastname: Pastoriza-Santos
authors.forename: Jorge
authors.initials: J
authors.lastname: Pérez-Juste
authors.forename: Thomas
authors.initials: T
authors.lastname: Hellweg
authors.forename: Luis M
authors.initials: LM
authors.lastname: Liz-Marzán
mesh_terms: D000180:Acrylic Resins; D005782:Gels; D006046:Gold; D006358:Hot Temperature; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D043942:Nanotubes / Q000648:ultrastructure; D055095:Optics and Photonics; D013056:Spectrophotometry, Ultraviolet; D020349:Surface Plasmon Resonance
chemical_list: D000180:Acrylic Resins; D005782:Gels; C052970:poly-N-isopropylacrylamide; D006046:Gold