Researchers from from Zhejiang Normal University in China developed a biocompatible bio-sensor that can simultaneous detection multiple biomarkers, such as DNA and proteins. Those sensors are made from carbon materials - mainly graphene-oxide (GO) and graphene quantum dots (GQDs).

The researchers explain hat GQDs rae promising environmentally friendly and biocompatible nanomaterials that can be used to design new fluorescence detection platforms in vitro and in vivo. The researchers use the specifically designed fluorescence on-off-on process that takes advantage of the intense and dual-color fluorescence of the GQDs, in addition to the efficient quenching effect of GO. The high emission efficiency of GQDs guarantees the high sensitivity of the constructed biosensors, while the good biocompatibility is promising for use of biosensors in vivo.

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