Due to their unique structure, the optical and mechanical properties graphene and its derivatives
(e.g. graphene oxide, reduced graphene oxide) have captured the attention of a constantly increasing number
of scientists with regards to biomolecule sensing. This mini review focuses on one specific type of sensor,
that consisting of graphene and polyelectrolytes. Polyelectrolyte-graphene nanocomposites exhibit outstanding
detection capabilities by synergistically combining the characteristics of both components, outperforming traditional
sensors in many cases. Characteristics and mechanistic details of the most important polyelectrolyte-graphene
based sensors will be discussed in detail in addition to some current challenges and future perspectives.
Keywords: Polyelectrolytes, graphene, nanocomposites, sensors, hybrid materials.
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