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Luminescent Sensing of Oxygen Using a Quenchable Probe and Upconverting Nanoparticles

Wolfbeis, Otto S., Achatz, Daniela E., Meier, Robert J. and Fischer, Lorenz H. (2011) Luminescent Sensing of Oxygen Using a Quenchable Probe and Upconverting Nanoparticles. Angewandte Chemie International Edition 50 (1), pp. 260-263.

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Date of publication of this fulltext: 18 Mar 2011 06:33

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Turned off by oxygen: Luminescent upconverting nanoparticles (UCNPs) of the type NaYF4:Yb,Tm are employed in an entirely new type of optical sensor for oxygen (see picture). Upon laser excitation at 980 nm, these UCNPs act as nanolamps, the blue emission of which is used to photoexcite an iridium complex dissolved in ethyl cellulose. Its green emission, in turn, is dynamically and fully reversibly quenched by molecular oxygen.

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Item type:Article
Date:3 January 2011
Institutions:Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Chemo- und Biosensorik (Prof. Antje J. Bäumner, formerly Prof. Wolfbeis)
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Keywords:luminescence; nanoparticles; oxygen; sensor; upconversion
Dewey Decimal Classification:500 Science > 540 Chemistry & allied sciences
Created at the University of Regensburg:Unknown
Item ID:19951
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