High-performance Hg(2+) FET-type sensors based on reduced graphene oxide-polyfuran nanohybrids.

A new type of field-effect transistor (FET) sensor, based on reduced graphene oxide (rGO)-polyfuran (PF) nanohybrids, was strategically developed. The sensing transducer exhibited a rapid response (<1 s) and high sensitivity (10 pM) in a liquid-ion-gated FET-type Hg(2+) sensor. Excellent Hg(2+) discrimination in heavy metal mixtures was also monitored in real time.