Pure β-NaYF4 nanocrystals with a hexagonal phase were synthesized in a novel way at low temperature using sparingly soluble rare-earth salts as precursors and ethanol–water as the solvent. The phase of the products could be controlled by adjusting the water content. An up-converting aqueous colloidal solution and a transparent film were obtained through a simple post-treatment.
Synthesis of water-soluble β-NaYF4 nanocrystals in a green way
MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/State Key Laboratory of Optoelectronic Materials and Technology, Key Laboratory of Environment and Energy Chemistry of Guangdong Higher Education Institutes, School of Chemistry and Chemical Engineering, Sun Yat-Sen (Zhongshan) University, Guangzhou, PR China
+86 20 84111038
Department of Chemistry, University of Toronto, 80 St George Street, Toronto, Canada M5S 3H6
CrystEngComm, 2014,16, 6526-6529