Luminescence enhancement of nanosized ytterbium and europium fluorides by surface complex formation with aromatic carboxylates

Yt terbium 2,6-naphthalenedicarboxylate (Yb2(nda)3•4H2O) and yt terbium 9-anthracenecarboxylate (Yb(ant)3) were obtained for the first time, and it was shown that both of them exhibit ligand sensibilized ytterbium luminescence. Anions ant- and nda2- were tested for the nanoparticle surface modification of YbF3 and model EuF3. The surface modification of the size uniform toroid-like EuF3 nanoparticles with K2(nda) and octahedron-like YbF3 nanoparticles with K(ant) results in the significant luminescence enhancement due to lanthanide carboxylate formation on the particle surface. Such a surface modification leads to the particle size decrease, while their shape remains the same.

Link: http://www.sciencedirect.com/science/article/pii/S0022231315001763

Authors: Utochnikova Valentina V., Kalyakina Alena S., Lepnev Leonid S., Kuzmina Natalia P.

Magazine: Journal of Luminescence

Publication year: 2015

 

 

Luminescence enhancement of nanosized ytterbium and europium fluorides by surface complex formation with aromatic carboxylates