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Proceedings Paper

Soluble phthalocyanines as optical gas sensing materials
Author(s): Katerina Severova; Gianluigi Maggioni; Stanislav Nespurek; Sara Carturan; Riccardo Milan; Michele Tonezzer; Gianantonio Della Mea
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Paper Abstract

A novel soluble phthalocyanine compound, i.e zinc phthalocyanine (sulfonamide) has been synthesized by chemical substitution of zinc phthalocyanine and used to produce thin solid films by means of the spin coating technique. The chemical structure of the spin coated films has been investigated by FT-IR analysis. Atomic Force Microscopy (AFM) has been used to characterize the film morphology and to measure the film thickness. The spin coated films have been tested as optical sensing materials of volatile organic compounds such as methanol, ethanol and 2-propanol. The change of optical reflectance of the films upon exposure to alcohol-vapour-containing atmospheres has been measured versus alcohol concentration and exposure time. The films exhibit a fast and reproducible response, with a complete and fast recovery in methanol and ethanol-containing atmospheres, while diffusion-driven effects appear during exposure to 2-propanol. The response and sensitivity of the films to ethanol vapour is higher than to methanol and 2-propanol.

Paper Details

Date Published: 16 May 2007
PDF: 9 pages
Proc. SPIE 6585, Optical Sensing Technology and Applications, 65851T (16 May 2007); doi: 10.1117/12.722879
Show Author Affiliations
Katerina Severova, Brno Univ. of Technology (Czech Republic)
INFN - LNL (Italy)
Gianluigi Maggioni, Univ. of Padua c/o INFN- LNL (Italy)
Stanislav Nespurek, Brno Univ. of Technology (Czech Republic)
Institute of Macromolecular Chemistry (Czech Republic)
Sara Carturan, Univ. of Padua c/o INFN- LNL (Italy)
Riccardo Milan, INFN - LNL (Italy)
Michele Tonezzer, INFN - LNL (Italy)
Gianantonio Della Mea, INFN - LNL (Italy)
Univ. of Trento (Italy)

Published in SPIE Proceedings Vol. 6585:
Optical Sensing Technology and Applications
Francesco Baldini; Jiri Homola; Robert A. Lieberman; Miroslav Miler, Editor(s)

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