Control of green and red upconversion in NaYF4:Yb3+,Er3+ nanoparticles by excitation modulation

Christian F. Gainer; Gihan S. Joshua; Channa R. De Silva; Marek Romanowski

doi:10.1039/C1JM13684D

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Control of green and red upconversion in NaYF₄:Yb³⁺,Er³⁺nanoparticles by excitation modulation†

Christian F. Gainer,^a Gihan S. Joshua,^a Channa R. De Silva^b and Marek Romanowski*^a

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* Corresponding authors

^a Department of Biomedical Engineering, The University of Arizona, P.O. Box 210240, Tucson, Arizona, United States of America
E-mail: marekrom@email.arizona.edu

^b Department of Chemistry and Physics, Western Carolina University, Cullowhee, North Carolina, United States of America

Abstract

Control of the two strongest upconversion emission lines in NaYF₄:Yb³⁺, Er³⁺ nanoparticles is demonstrated by varying the excitation repetition rate. This technique may enable new multiplexed sensing modalities based on multicolor luminescent nanoparticles, currently contemplated for biomedical imaging and diagnostics.

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Article information

DOI: https://doi.org/10.1039/C1JM13684D
Article type: Communication
Submitted: 02 Aug 2011
Accepted: 10 Oct 2011
First published: 26 Oct 2011

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J. Mater. Chem., 2011,21, 18530-18533

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Control of green and red upconversion in NaYF₄:Yb³⁺,Er³⁺ nanoparticles by excitation modulation

C. F. Gainer, G. S. Joshua, C. R. De Silva and M. Romanowski, J. Mater. Chem., 2011, 21, 18530 DOI: 10.1039/C1JM13684D

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Journal of Materials Chemistry