Development of accurate system of gas detection based on Love wave sensors functionalized with cobalt corroles applied to the detection of carbon monoxide

We demonstrate here that surface acoustic wave devices give the means to exploit the molecular recognition events occurring in a non-conductive sensing layer. Using a specific test bench, we have monitored phase variations at constant frequency of Love waves generated by SAW devices, when loaded with carbon monoxide molecules. The devices used here are functionalized with cobalt corroles, which is a sensitive compound showing an attractive capability for carbon monoxide trapping. The test bench permits the regeneration of the trapping sites of carbon monoxide allowing the reusability of the devices. These good results pave the way to the detection of other gas and even particles.