
98 Biosensors Based on Nanomaterials and Nanodevices
has demonstrated high specicity for IL-5 among other cytokines and is not affected
by human serum proteins. The detection limit of IL-5 is about 5 pg/mL. This GO-based
immunoassay platform can be readily adapted for the detection of other protein targets,
by changing antibodies.
GO not only acts as a uorophore but also serves as an effective uorescence quencher.
Recently, Pei et al. have developed a graphene-based sensor array for target identica-
tion with a new concept of adaptive “ensemble aptamers” (ENSaptamer), which exploits
the collective recognition abilities of a small set of ra ...