The present invention relates to a device for detection of a gaseous analyte. Specifically, the present invention relates to a device for detection of a gaseous analyte, wherein the device is comprised of a first layer, being a substrate layer, a second layer, being an electrical insulating layer interposed between the first layer and a third layer, being a graphene layer and a fourth layer that is comprised of transition metal complexes, wherein the fourth layer is provided on a top surface of the graphene layer, wherein said transition metal complexes are capable to form a stable complex with said gaseous analyte. Furthermore the device comprises at least two electrodes being in electrical communication with the graphene layer and are capable of measuring a change in conductance of the graphene layer by measuring a change in electric potential between electrodes. Furthermore the present invention relates to methods for the detection of gaseous analyte and the use of the device of present invention to measure the gaseous analyte concentrations.
Published in: "Patentscope".