Jump to main content
Jump to site search

Issue 38, 2012
Previous Article Next Article

Lanthanide-doped ultrasmall yttrium fluoride nanoparticles with enhanced multicolor upconversion photoluminescence

Author affiliations

Abstract

Ultrasmall upconversion (UC) nanoparticles with efficient multicolor photoluminescence (PL) are quite desirable for high contrast in vitro and in vivo bioimaging. Here, we present a simple and reproducible thermolysis approach to synthesize 3.7 nm sized lanthanide-doped YF3 UC nanocrystals. The PL intensity of these ultrasmall nanoparticles was found to be about ten times brighter than that of 4.5 nm sized CaF2 counterparts, which were reported to be one of the smallest efficient upconversion nanoparticles. We also showed that the color output of these nanocrystals can all be simply modulated by adjusting the sensitizer Yb3+ concentration. Moreover, to further enhance the PL output, a one nm thick epitaxial layer was grown onto the YF3 nanocrystals. These lanthanide-doped ultrasmall upconversion YF3 nanocrystals with modulated and enhanced multicolor output are ideal for a variety of in vitro and in vivo biological imaging applications.

Graphical abstract: Lanthanide-doped ultrasmall yttrium fluoride nanoparticles with enhanced multicolor upconversion photoluminescence

Back to tab navigation

Supplementary files

Publication details

The article was received on 12 Apr 2012, accepted on 03 Jul 2012 and first published on 03 Jul 2012


Article type: Paper
DOI: 10.1039/C2JM32298F
Citation: J. Mater. Chem., 2012,22, 20190-20196
  •   Request permissions

    Lanthanide-doped ultrasmall yttrium fluoride nanoparticles with enhanced multicolor upconversion photoluminescence

    G. Chen, H. Qiu, R. Fan, S. Hao, S. Tan, C. Yang and G. Han, J. Mater. Chem., 2012, 22, 20190
    DOI: 10.1039/C2JM32298F

Search articles by author

Spotlight

Advertisements