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Issue 33, 2010
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Rare earth fluoride nano-/microcrystals: synthesis, surface modification and application

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Abstract

This feature article highlights the recent advances on the chemical synthesis, surface modification and applications of rare earth fluoride nano-/microcrysals. In the past decade, great progress in the size and shape control of rare earth fluoride nano-/microcrystals has been made by developing solution phase-based methods such as thermal decomposition, hydro(solvo)thermal reaction, hydrothermal in situ conversion route, and ionic liquids-based synthesis. The main challenge of fluoride nanocrystals for biological applications is that it is hard to obtain ideal nanocrystals with smaller size (sub-50 nm), higher luminescence yield, better dispersity and stability in aqueous solvents, and superior biocompatibility. In order to overcome these shortcomings, a series of strategies of surface modification have been outlined in this review. Finally, we introduce the application of rare earth fluorides, with special emphasis on β-NaY(Gd)F4 : Yb3+, Er3+ upconversion nanopaticles (UCNPs) in biomedical applications including biological labels, multimodal bioimaging, photodynamic therapy and drug delivery.

Graphical abstract: Rare earth fluoride nano-/microcrystals: synthesis, surface modification and application

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Publication details

The article was received on 15 Jan 2010, accepted on 31 Mar 2010 and first published on 25 May 2010


Article type: Feature Article
DOI: 10.1039/C0JM00031K
Citation: J. Mater. Chem., 2010,20, 6831-6847
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    Rare earth fluoride nano-/microcrystals: synthesis, surface modification and application

    C. Li and J. Lin, J. Mater. Chem., 2010, 20, 6831
    DOI: 10.1039/C0JM00031K

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