Optical and morphological characterization of bispyrazole thin films for gas sensing applications |
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| Affiliation: | 1. LCAE-URAC18, COSTE, Faculté des Sciences, Université Mohamed 1er – B.P. 524, 60000 Oujda, Morocco;2. Faculté Pluridisciplinaire de Nador, B.P. 300, Selouane 62700, Nador, Morocco;3. Dipartimento di Ingegneria dell’Innovazione, Università del Salento, via Arnesano, 73100 Lecce, Italy;4. Istituto per la Microelettronica e Microsistemi, Campus Universitario Ecotekne, IMM-CNR, Lecce, Italy |
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| Abstract: | The optical gas recognition capabilities of thin film layer of 4-[bis[(3,5-dimethyl-1H-pyrazol-1-yl)methyl]-amino]phenol deposed on quartz substrates were studied. The dynamic gas responses to the following analytes have been investigated as air pollutants (SO2, NO2, CO, CH4 and NH3). The spin-coated bispyrazole layer appears to have reversible response towards SO2 and a very low and irreversible response to NO2. The selectivity of the thin film based on bispyrazole layer with respect to other analytes was also examined and the present data show that the thin sensing layer in the presence of CO, CH4 and NH3 in low concentration does not influence its optical properties. |
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| Keywords: | Thin films solid state Gas sensors Bispyrazole Optical detection |
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