Optochemical HCl gas detection using mono-substituted tetraphenylporphin-polymer composite films

被引：19

作者：

Supriyatno, H

Nakagawa, K

Sadaoka, Y ^{[1
]}

机构：

[1] Ehime Univ, Fac Engn, Dept Mat Sci & Engn, Matsuyama, Ehime 7908577, Japan

[2] Niihama Natl Coll Technol, Dept Appl Chem & Biotechnol, Niihama 7928580, Japan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2001年 / 76卷 / 1-3期

关键词：

optochemical sensor; gas sensor; porphin; reflectance; absorbance; hydrogen chloride;

D O I：

10.1016/S0925-4005(01)00565-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Hydroxy-/alkoxy-substituted tetraphenylporphin were synthesized and their Soret- and Q-bands' changes with HCl gas in ppm levels were examined. Both the bands were influenced by HCl gas concentration and their changes in sub-ppm levels of HCl were decreased with an increase in the alkoxy chain length. The changes of the absorbance of the Soret- and Q(O-O)-bands were enhanced by replacing ethylcellulose with poly-hexylmethacrylate as a matrix while the recovery times prolonged. The introductions of electron donating substituents to p-phenyl positions of the porphin ring result in the basicity of pyrrole nitrogens, (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：36 / 41

页数：6

共 11 条

[1] AN INVESTIGATION OF THE EQUILIBRIUM BETWEEN VARIOUS FORMS OF OXAZINE-170 BY MEANS OF ABSORPTION AND FLUORESCENCE SPECTROSCOPY [J].