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1. Heterometallic Na-Y(Ln) trifluoroacetate diglyme complexes as novel single-source precursors for upconverting NaYF4 nanocrystals co-doped with Yb and Er/Tm ions.

Author

Mishra S, Daniele S, Ledoux G, Jeanneau E, and Joubert MF

Subjects
Alkenes chemistry, Erbium chemistry, Molecular Conformation, Temperature, Thulium chemistry, Coordination Complexes chemistry, Ethylene Glycols chemistry, Fluorides chemistry, Methyl Ethers chemistry, Nanoparticles chemistry, Trifluoroacetic Acid chemistry, Yttrium chemistry
Abstract

We report synthesis of new single-source heterometallic precursors [NaLn(TFA)(4)(diglyme)] (Ln = Y, Er, Tm, Yb; TFA = trifluoroacetate), which decompose in 1-octadecene at significantly low temperature, without using any surfactant or capping reagent, to give sub-50 nm particles of cubic and/or hexagonal NaYF(4) : Yb(3+), Er(3+)/Tm(3+) materials forming well-dispersed colloidal solutions in dichloromethane and exhibiting green/blue upconversion luminescence.

Published
2010
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