title: Plasmonic nanohybrid with ultrasmall Ag nanoparticles and fluorescent dyes.
abstract: We investigate a hybrid nanocomposite combining fluorescent dyes and ultrasmall (<3 nm) silver nanocrystals in a block copolymer micelle. Although the metal nanoparticles are significantly smaller than the electromagnetic skin depth, we observe a modification of the exciton lifetime and the nonradiative energy transfer among the dyes. This behavior is absent in a control experiment with dyes whose energetic levels are far from the plasmonic resonance, establishing the plasmonic nature of the interaction.
authors.affiliation: IBM Research-Zurich, Säumerstrasse 4, 8803 Rüschlikon, Switzerland. gra@zurich.ibm.com
authors.forename: Gabriele
authors.initials: G
authors.lastname: Rainò
authors.forename: Thilo
authors.initials: T
authors.lastname: Stöferle
authors.forename: Chanhee
authors.initials: C
authors.lastname: Park
authors.forename: Ho-Cheol
authors.initials: HC
authors.lastname: Kim
authors.forename: Teya
authors.initials: T
authors.lastname: Topuria
authors.forename: Philip M
authors.initials: PM
authors.lastname: Rice
authors.forename: In-Joo
authors.initials: IJ
authors.lastname: Chin
authors.forename: Robert D
authors.initials: RD
authors.lastname: Miller
authors.forename: Rainer F
authors.initials: RF
authors.lastname: Mahrt
mesh_terms: D003460:Crystallization / Q000379:methods*; D005456:Fluorescent Dyes / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D020349:Surface Plasmon Resonance / Q000379:methods*; D013499:Surface Properties
chemical_list: D005456:Fluorescent Dyes; D046911:Macromolecular Substances; D006046:Gold