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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Abstract
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) | ||||
| Identification Number: |
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| Keywords: | luminescence; nanoparticles; oxygen; sensor; upconversion | ||||
| Dewey Decimal Classification: | 500 Science > 540 Chemistry & allied sciences | ||||
| Status: | Published | ||||
| Refereed: | Unknown | ||||
| Created at the University of Regensburg: | Unknown | ||||
| Item ID: | 19951 |
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