Title of article
Optochemical HCl gas detection using alkoxy substituted tetraphenylporphyrin-polymer composite films: Effects of alkoxy chain length on sensing characteristics
Author/Authors
Nakagawa، نويسنده , , Katsuhiko and Sadaoka، نويسنده , , Yoshihiko and Supriyatno، نويسنده , , Heru and Kubo، نويسنده , , Akiko and Tsutsumi، نويسنده , , Chikara and Tabuchi، نويسنده , , Kenzo، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2001
Pages
5
From page
42
To page
46
Abstract
Composite films of 5,10,15,20-tetra(4′-alkoxyphenyl)porphyrin (TP(OR)PH2) embedded in various polymer matrices were prepared and their optical responses to HCI gas were examined. The absorbance of the Soret and Q-bands for free-base TP(OR)PH2 is reversibly sensitive to sub-ppm levels of HCl. The glass transition temperature (Tg) of a matrix below the sensing temperature is more effective to the response and recovery behavior than above the sensing temperature. High sensitivity to sub-ppm levels of HCl was achieved by using a TP(OC4H9)PH2-BuMA composite film.
Keywords
Gas sensor , Optochemical sensor , UV–vis spectrum , Porphyrin , Hydrogen Chloride , Environmental monitoring
Journal title
Sensors and Actuators B: Chemical
Serial Year
2001
Journal title
Sensors and Actuators B: Chemical
Record number
1414378
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