8.5.3 Colorimetric CO and NO2 Gas Sensors for Fire Detection

Carolin Peter, Ina Schumacher, Katrin Schmitt, Jürgen Wöllenstein & Daniel Gutmacher
We present the development of a novel CO and NO2 sensing principle using gasochromic materials. The sensor set-up works with a very low power consumption to enable their usage in commercial fire detection systems. CO and NO2 are both typical fire indicating gases. For the detection of CO we used a binuclear rhodium complex. NO2 can be detected using the chinonime dye N,N,N’,N’-tetramethyl-phenylene-diamine. Both dyes were embedded into a highly porous polymer and deposited on...