P2.3.9 Polyaniline/poly(ethylene terephthalate) films as a sensing material in optical sensors for basic and acidic substances
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- P2.3 Sensors Based on Optical Techniques
- A. Pud, I. Duboriz - Institute Bioorganic Chemistry and Petrochemistry, NASU (Ukraine)
- 1472 - 1474
The new transparent polyaniline/poly(ethylene terephthalate) (PANI/PET) film sensor composites have been synthesized through aniline polymerization inside the surface layer of PET film followed by specific treatments. Ultimate PANI/PET films have a developed surface area; give strong, fast and reversible optical sensor responses to basic or acidic substances (dependently on the doping degree of PANI). In case of ammonia-air gas mixtures we demonstrated that the doped (PANI-HCl)/PET films give linear optical responses to ammonia gas in concentration ranges of 5-200 ppm and 200-750 ppm. The undoped PANI/PET films give linear optical response to formic acid in the concentration range of 150-750 ppm. These films are durable and can be used also as pH sensor in aqueous or organic media.