A Study on Efficacy of Modified Electrodes Using Carbon and Graphene-Based Quantum Dots for Dopamine Detection

Due to their high conductivity, minimal cytotoxicity, and optoelectronic features, carbon-based (CQD) quantum dots have been increasingly used into electrochemical sensors for neurotransmitter detection in recent years. This is because these sensors were created in response to a need for more sensitive and less priced electrodes. Due to the widespread use of monoamine neurotransmitters (NTs) and the strong electro-catalytic activity of carbon-based and graphene-based quantum dots (CQDs and GQDs), a thorough investigation of the efforts undertaken to create sensors for NTs is warranted. The desirable chemical characteristics of glassy carbon electrodes (GCEs) make them a popular choice for use in the production of electrochemical sensors. Some of these features include impermeability to chemicals and liquids and pore size on a tiny scale. GCE quantum dots, a type of carbon-based quantum dot, were the most frequently used to modify electrodes for the identification of monoamine NTs, possibly because of these properties. The primary objective of this present study is to provide a concise overview of recent research on electrodes modified with nanomaterials, which have shown efficacy in the electrochemical detection of dopamine with notable sensitivity and selectivity.