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Upconverting nanoparticle based optical sensor for carbon dioxide

Ali, Reham, Saleh, Sayed M., Meier, Robert J., Azab, Hassan A, Abdelgawad, Ibraheim I. and Wolfbeis, Otto S. (2010) Upconverting nanoparticle based optical sensor for carbon dioxide. Sensors and Actuators B: Chemical 150 (1), pp. 126-131.

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We demonstrate a novel optical sensor for carbon dioxide in concentrations between 0 and 3%. The sensing scheme is based on the optical interrogation of a 12-μm polystyrene (PS) film containing upconverting nanoparticles (UCNPs; 40–100 nm in size) of the type NaYF4:Yb,Er, and the longwave absorption pH probe bromothymol blue (BTB) in its anionic (blue) form. PS is chosen as a matrix because it ...


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Item type:Article
Date:21 September 2010
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:Optical sensor; Carbon dioxide; Nanoparticle; Upconversion; Luminescence
Dewey Decimal Classification:500 Science > 540 Chemistry & allied sciences
Created at the University of Regensburg:Unknown
Item ID:19957
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