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Luminescent Sensing of Oxygen Using a Quenchable Probe and Upconverting Nanoparticles

Wolfbeis, Otto S. and Achatz, Daniela E. and 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.

Item Type:Article
Institutions: Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Chemo- und Biosensorik (Prof. Otto S. Wolfbeis)
Identification Number:
ValueType
10.1002/anie.201004902DOI
Keywords:luminescence; nanoparticles; oxygen; sensor; upconversion
Subjects:500 Science > 540 Chemistry & allied sciences
Status:Published
Refereed:Unknown
Created at the University of Regensburg:Unknown
Owner:Martin Kaiser
Deposited On:18 Mar 2011 07:33
Last Modified:21 Jul 2011 04:08
Item ID:19951
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