“…Among the photoreactive polymers, photoreactive antifouling acrylic polymers grafted with PEG have been used as microarray matrixes [ 37 , 38 , 39 , 40 , 41 , 42 , 43 ] and are now commercially employed in allergy diagnosis (DropScreen R ) [ 44 , 45 ]. In a previous study, photoreactive PEG was synthesized via the copolymerization of methacrylate-PEG and acryloyl 4-azidobenzene.…”