Two-photon absorption and photoluminescence of europium based emissive probes for bioactive systems.
Observation of two-photon excitation (760 nm) and emission of two responsive water soluble europium complexes is reported with cross-sections of up to 2 GM. Two-photon excitation spectra have also been measured, acquisition being achieved by the use of a cavity-dumped mode locked Ti-sapphire laser. Time-gated detection is used to differentiate the ligand fluorescence and metal centred emission in these europium complexes.
Department of Chemistry, Durham University, South Road, Durham, UK. lars-olof.palsson@dur.ac.uk
Lars-Olof
LO
Pålsson
Robert
R
Pal
Benjamin S
BS
Murray
David
D
Parker
Andrew
A
Beeby
D015502:Absorptiometry, Photon; D001681:Biological Assay / Q000379:methods; D005063:Europium / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D008163:Luminescent Measurements; D008670:Metals / Q000737:chemistry; D017785:Photons
D005456:Fluorescent Dyes; D007477:Ions; D008670:Metals; D005063:Europium