Upconversion in molecular hetero-nonanuclear lanthanide complexes in solution.
Fiche publication
Date publication
décembre 2020
Journal
Chemical communications (Cambridge, England)
Auteurs
Membres identifiés du Cancéropôle Est :
Dr CHARBONNIERE Loïc
Tous les auteurs :
Knighton RC, Soro LK, Lecointre A, Pilet G, Fateeva A, Pontille L, Francés-Soriano L, Hildebrandt N, Charbonnière LJ
Lien Pubmed
Résumé
Here we show that nonanuclear lanthanide complexes respresent a new class of solution state upconversion (UC) molecules. For a composition of one Tb per eight Yb the nonanuclear complexes display a very efficient UC phenomenon with Tb luminescence in the visible region upon 980 nm NIR excitation of Yb. An unprecedented value of 1.0 × 10-7 was obtained for the UC efficiency at only 2.86 W cm-2, demonstrating these new molecular complexes to be up to 26 times more efficient than the best current molecular systems, the UC being observed down to a concentration of 10 nM.
Référence
Chem Commun (Camb). 2020 Dec 17;: