| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9700985 | Sensors and Actuators B: Chemical | 2005 | 5 Pages |
Abstract
Composite films of 5,10,15,20-tetraphenylporphyrin (TPPH2) derivatives containing electron-releasing groups such as alkyl and alkoxy group embedded in various biodegradable polyesters (BDPE) matrices were prepared and their optical response to hydrogen chloride (HCl) gas were examined in comparison with nonbiodegradable polymers (NBDP) matrices. Absorbance of the Soret- and Q-bands for TPPH2 derivatives-BDPE composite films are reversibly, more sensitive to sub-ppm levels of HCl gas than those for those-NBDP composite films. A high sensitivity to sub-ppm levels of HCl gas was achieved by using a 5,10,15,20-tetra(4â²-butoxyphenyl)-porphyrin (TP(OC4H9)PH2)-poly(É-caprolactone) (PCL) composite film.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Katsuhiko Nakagawa, Tomochika Aono, Gen Ueda, Chikara Tsutsumi, Nobuki Hayase, Michiaki Mabuchi, Yoshihiko Sadaoka,