title: Metal-enhanced up-conversion fluorescence: effective triplet-triplet annihilation near silver surface.
abstract: Up-conversion phenomena are traditionally related to two- or multiphoton processes occurring under relatively high excitation intensities. Here we present the first results of ultralow excitation intensity (in order of Wcm(-2)) continuous-wave (CW) excited up-conversion fluorescence in Kretschmann surface plasmon geometry. The active system is a blue-emitting polymer matrix blended with metalated porphyrine macrocycles. The up-conversion fluorescence is a consequence of a two-particle triplet-triplet annihilation process (TTA).
authors.affiliation: Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany. balouche@mpip-mainz.mpg.de
authors.forename: Stanislav
authors.initials: S
authors.lastname: Baluschev
authors.forename: Fang
authors.initials: F
authors.lastname: Yu
authors.forename: Tzenka
authors.initials: T
authors.lastname: Miteva
authors.forename: Stefanie
authors.initials: S
authors.lastname: Ahl
authors.forename: Akio
authors.initials: A
authors.lastname: Yasuda
authors.forename: Gabriele
authors.initials: G
authors.lastname: Nelles
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Knoll
authors.forename: Gerhard
authors.initials: G
authors.lastname: Wegner
mesh_terms: D004307:Dose-Response Relationship, Radiation; D007834:Lasers; D049449:Luminescence; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects*; D012834:Silver / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods*; D020349:Surface Plasmon Resonance / Q000379:methods*; D013499:Surface Properties
chemical_list: D012834:Silver