Rapid Synthesis of Sub-10 nm Hexagonal NaYF₄-Based Upconverting Nanoparticles using Therminol^® 66.

ABSTRACT: We report a simple one-pot method for the rapid preparation of sub-10 nm pure hexagonal (β-phase) NaYF₄-based upconverting nanoparticles (UCNPs). Using Therminol^® 66 as a co-solvent, monodisperse UCNPs could be obtained in unusually short reaction times. By varying the reaction time and reaction temperature, it was possible to control precisely the particle size and crystalline phase of the UCNPs. The upconversion (UC) luminescence properties of the nanocrystals were tuned by varying the concentrations of the dopants (Nd³⁺ and Yb³⁺ sensitizer ions and Er³⁺ activator ions). The size and phase-purity of the as-synthesized core and core-shell nanocrystals were assessed by using complementary transmission electron microscopy, dynamic light

SUBMITTER: Hesse J 

PROVIDER: S-EPMC5792831 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature