
86 Biosensors Based on Nanomaterials and Nanodevices
Herein, we briey introduce the recent results of PET uorescent sensors based on NMs
and nanostructures. Previous investigations have demonstrated that double-stranded
DNA can act as the electronic transport channel [82,83]. Willner et al. have employed the
electronic transport property of double-stranded DNA to develop a uorescent sensor for
the multiplexed detection of Hg
2+
and Ag
+
, as well as the logic gate [84]. In this sensor,
the QDs acted as the host uorescent material conjugated with the deliberately designed
single-stranded DNA. Upon the addition of Hg
2+
or Ag
+
, the rigid hair