Substrates, preparation and use

Abstract From the Canadian patent

There is disclosed process for preparing a substrate 1. Process for preparing a substrate having thereon sites reactive with the reactive groups of a molecular probe, the process comprising the steps of applying to the substrate surface a material comprising one or more reactive sites having an activated ethylenically unsaturated double bond of the formula I: Wherein if n= 0, m= , 1, X3 is carbon and X1 is nitrogen the bond between them being triple, and X4 does not exist; if n= 1, m= 1, X3 is carbon and X1 is oxygen or sulphur the , bond between them being double, and X2 is oxygen or sulphur or nitrogen substituted by an organo substituent; if n= 1 m= 1 or 2, X3 is sulphur and X1 , …