Diffusion of ammonia gas in PDMS characterized by ATR spectroscopy

Petr Levinský; Ladislav Kalvoda; Jan Aubrecht; Jaroslava Fojtíková

doi:10.1117/12.2070372

6 January 2015 Diffusion of ammonia gas in PDMS characterized by ATR spectroscopy

Petr Levinský; Ladislav Kalvoda; Jan Aubrecht; Jaroslava Fojtíková

Author Affiliations +

Proceedings Volume 9450, Photonics, Devices, and Systems VI; 94500D (2015) https://doi.org/10.1117/12.2070372
Event: Photonics Prague 2014, 2014, Prague, Czech Republic

Abstract

The kinetic parameters of a chemo-optical transducer layer sensitive to gaseous ammonia are characterized by means of attenuation total reflection method. The tested layer consists of cross-linked polydimethylsiloxane matrix sensitized by quinoline-based organometallic dye showing the selective chemical reaction with ammonia. Upper and lower limits of the ammonia diffusion coefficient and the ammonia-dye reaction constant are derived from the obtained experimental data and compared with other data available in literature and obtained from computer simulations.

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Petr Levinský, Petr Levinský, Ladislav Kalvoda, Ladislav Kalvoda, Jan Aubrecht, Jan Aubrecht, Jaroslava Fojtíková, Jaroslava Fojtíková, } "Diffusion of ammonia gas in PDMS characterized by ATR spectroscopy", Proc. SPIE 9450, Photonics, Devices, and Systems VI, 94500D (6 January 2015); doi: 10.1117/12.2070372; https://doi.org/10.1117/12.2070372

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