Incorporating lanthanide cations with cadmium selenide nanocrystals: a strategy to sensitize and protect Tb(III).
The electronic structure of CdSe semiconductor nanocrystals has been used to sensitize Tb3+ in solution by incorporation of Tb3+ cations into the nanocrystals during synthesis. Doping of luminescent Tb3+ metal ions in semiconductor nanocrystals utilizes the positive attributes of both species' photophysical properties, resulting in a final product with long luminescence lifetimes, sharp emission bands, high absorptivities, and strong resistance to decomposition. This strategy also helps protect the lanthanide cations from nonradiative deactivation from C-H, N-H, and O-H oscillators of solvent molecules or traditional organic lanthanide ligands, leading to long Tb3+ luminescence lifetimes. This new type of nanomaterial synergistically combines the photophysical properties of nanocrystals and Tb3+.
Chengelis
Demetra A
DA
Department of Chemistry, The University of Pittsburgh, Pennsylvania 15260, USA.
Yingling
Adrienne M
AM
Badger
Paul D
PD
Shade
Chad M
CM
Petoud
Stéphane
S
D019187:Cadmium Compounds / Q000737:chemistry*; D002412:Cations; D008163:Luminescent Measurements / Q000379:methods; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry*; D018036:Selenium Compounds / Q000737:chemistry*; D013725:Terbium / Q000737:chemistry*
D019187:Cadmium Compounds; D002412:Cations; D018036:Selenium Compounds; D013725:Terbium; C058667:cadmium selenide