| 摘要 |
<p>Chemiresistive gas sensors made from monomeric phthalocyanines suffer from changes in conductivity with varying humidity and are limited in their application. Polymeric films of general formula (XMO)n of a phthalocyanine or ''related structure'' as herein defined are formed by: (a) the step of depositing the compound XMY2 on a substrate; and (b) subjecting the compound XMY2 to hydrolysis followed by heat treatment, wherein X is a phthalocyanine or related structure, M is an element selected from group 4 or 5 of the periodic table or the transition elements, O is oxygen, n is an integer and Y is a halogen. These films show sensitivity towards inorganic and organic compounds and (PcSiO)n can be used at different levels of humidity. Uses include environmental monitoring and explosive detection.</p> |
