Carbonaceous Nanomaterials for Electrochemical Biosensing Platforms
Speaker: Christian Punckt, Princeton University
Department: Electrical Engineering
Location: Engineering Quadrangle J201
Date/Time: Thursday, April 25, 2013, 7:30 p.m. - 9:00 p.m.
The human nervous system is a big electrical network made of nerve cells. These neurons transmit a standard In recent years, the advent of carbonaceous nanomaterials such as carbon nanotubes (CNTs) and graphene has lead to an overwhelming number of scientific studies pointing out the benefits of these materials for electroanalysis and electrochemical sensors and biosensors. Both CNTs and graphene were found to catalyze the electrochemical oxidation or reduction of important biomolecules such as nicotinamide adenine dinucleotide (NADH), dopamine, nucleic acids, and numerous others. Due to the superior performance of these new electrode materials, practically relevant parameters such as sensitivity and electrode stability (e.g., absence of fouling) could be significantly improved. In my lecture, I will provide a brief overview of electrochemical biosensing approaches, explain what role the carbonaceous electrode "platform" plays for sensor performance, review the most relevant recent literature, and provide a critical discussion of the origins of electrocatalytic behavior of CNTs and graphene.
Shao et al. "Graphene-based electrochemical sensors and biosensors: a review" ACS Nano 4 (2010)
Pumera "Graphene-based nanomaterials and their electrochemistry" Chem. Soc. Rev. 39 (2010)
Brownson and Banks "Graphene electrochemistry: an overview of potential applications" Analyst 135 (2010)
Wang "Carbon-nanotube based electrochemical biosensors: a review" Electroanalysis 17 (2005)
Wang "Electrochemical glucose biosensors" Chem. Rev. 108 (2008)