Metal-enhanced up-conversion fluorescence: effective triplet-triplet annihilation near silver surface.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 16351199.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
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).
Medical subject headings
- Lasers
- Luminescence
- Nanostructures
- Silver
- Spectrometry, Fluorescence
- Surface Plasmon Resonance