The optical gas recognition capabilities of thin film layer of 4-[bis[(3,5-dimethyl-1H-pyr- azol-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 bispyraz- ole 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 opti- cal properties.
Optical and morphological characterization of bispyrazole thin films for gas sensing applications
SCORRANO, SONIA;VASAPOLLO, Giuseppe;RELLA, Roberto
In corso di stampa
Abstract
The optical gas recognition capabilities of thin film layer of 4-[bis[(3,5-dimethyl-1H-pyr- azol-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 bispyraz- ole 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 opti- cal properties.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
