
224 Biosensors Based on Nanomaterials and Nanodevices
probes and active domain for biomolecule binding, offering signicant enhancement of
the electrochemical and ECL sensing signals (Du et al. 2010, 2011; Wan et al. 2011).
Fan et al. (2008) rst reported fairly intense ECL of graphene oxide (GO) nanoparticles at
a potential of 1.15 V (vs. SCE). Besides its intrinsic ECL, improved ECL performance was
also achieved on graphene modied electrodes. Xu’s group (Li et al. 2009) reported an ECL
sensor based on Ru(bpy)
3
2+
-graphene-Naon composite lm. The introduction of graphene
into Naon lm not only dramatically promotes the electron transfer of ...