Incorporating Lanthanide Cations with Cadmium Selenide Nanocrystals: A Strategy to Sensitize and Protect Tb(III)

Abstract : 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+.
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https://hal.archives-ouvertes.fr/hal-02090815
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Submitted on : Friday, April 5, 2019 - 10:55:54 AM
Last modification on : Friday, April 5, 2019 - 3:17:42 PM

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Demetra Chengelis, Adrienne Yingling, Paul Badger, C.M. Shade, Stephane Petoud. Incorporating Lanthanide Cations with Cadmium Selenide Nanocrystals: A Strategy to Sensitize and Protect Tb(III). Journal of the American Chemical Society, American Chemical Society, 2005, 127 (48), pp.16752-16753. ⟨10.1021/ja0511725⟩. ⟨hal-02090815⟩

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