Fabrication of dip-and-read orthophosphate chemosensor based on laser inscribed graphene v1

This protocol describes the fabrication of a LIG dip-and-read orthophosphate sensor based on a 2 dimensional sorbent structure (poly[diallydimethylammonium] chloride, a.k.a, PolyDADAMAC) grafted on graphene oxide (GO) as recognition element. The ortho-P sensor uses electrochemical impedance spectroscopy (EIS) as a transduction technique, and laser-induced graphene electrodes as a transducer platform. The process requires approximately 5 hours (from sensor fabrication to testing)