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

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.

Citation Download Citation

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

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