Synthesis of amphipathic YVO4:Eu3+ nanophosphors by oleate-modified nucleation/hydrothermal-Growth Process

Takaaki Taniguchi, Tomoaki Watanabe, Ken Ichi Katsumata, Kiyoshi Okada, Nobuhiro Matsushita

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Abstract

We have successfully employed an oleate-modified nucleation/hydrothermal growth process for the synthesis of YVO4:Eu3+ nanoparticles. Oleate-passivated YVO4:Eu3+ nanoparticles, formed by precipitation of Y/Euoleate complex by Na3VO 4solution, were subjected to hydrothermal treatment at 200 °C for 6 h to initiate crystal growth. The resultant nanoparticles (average grain size 16.1 nm) show well-defined red luminescence due to radiative transitions from the 5D0 to 7FJ (J: 1-4) levels of Eu3+. Significantly, the nanoparticles disperse well in both water and nonpolar solvents, presumably due to an oleate double layer that self-organizes on the nanocrystalline surface. The effects of hydrothermal treatment on the crystal, luminescent, and morphological properties of amphipathic nanoparticles as well as the mechanism of their formation are discussed.

Original languageEnglish
Pages (from-to)3763-3769
Number of pages7
JournalJournal of Physical Chemistry C
Volume114
Issue number9
DOIs
Publication statusPublished - 11 Mar 2010

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