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Colloidal Synthesis of Luminescent Rhabdophane LaPO<INF>4</INF>:Ln<SUP>3+</SUP>·xH<INF>2</INF>O (Ln = Ce, Tb, Eu; x ≈ 0.7) Nanocrystals

Authors :
Buissette, V.
Moreau, M.
Gacoin, T.
Boilot, J.-P.
Chane-Ching, J.-Y.
Mercier, T. Le
Source :
Chemistry of Materials; September 2004, Vol. 16 Issue: 19 p3767-3773, 7p
Publication Year :
2004

Abstract

Lanthanide phosphate nanocrystals exhibiting the rhabdophane-type structure and mean particle sizes below 10 nm are synthesized by hydrolysis of an aqueous mixture of sodium tripolyphosphate (Na&lt;INF&gt;5&lt;/INF&gt;P&lt;INF&gt;3&lt;/INF&gt;O&lt;INF&gt;10&lt;/INF&gt;) and lanthanide salts. &lt;SUP&gt;31&lt;/SUP&gt;P NMR studies show that polyphosphate groups act both as a source of orthophosphate and as complexing agents to, respectively, crystallize and stabilize LnPO&lt;INF&gt;4&lt;/INF&gt;&#183;xH&lt;INF&gt;2&lt;/INF&gt;O (x ≈ 0.7) nanoparticles. In the ternary system (Ln = La, Ce, and Tb), polyphosphate-capped particles form well-dispersed and highly luminescent aqueous colloids which are promising for applications in light-emitting devices.

Details

Language :
English
ISSN :
08974756
Volume :
16
Issue :
19
Database :
Supplemental Index
Journal :
Chemistry of Materials
Publication Type :
Periodical
Accession number :
ejs6408350