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Updated: Jun 25, 2025
Gold Nanoparticle Modified Carbon Fiber Microelectrodes for Enhanced Neurochemical Detection
Published on: May 13, 2019
Fabrication and Optimization of a Molecularly Imprinted Carbon Fiber Microelectrode for Selective Detection of
Nicole A Villarini1, Nathan Robins1, Yangguang Ou1
1Department of Chemistry, University of Vermont, 82 University Place, Burlington, Vermont 05405, United States.
None:
Methionine-enkephalin (Met-Enk) is an endogenous opioid peptide that is involved in various physiological processes including memory. A technological gap in the understanding of Met-Enk's role in memory is the lack of rapid measurement tools to selectively quantify Met-Enk concentrations in situ. Here, we integrate molecularly imprinted polymers (MIPs) with carbon fiber microelectrodes (CFMs) to selectively detect Met-Enk by using fast-scan cyclic voltammetry (FSCV). We report two MIP conditions that yield 2-fold and 5-fold higher selectivity toward Met-Enk than the tyrosine-containing hexapeptide fragment angiotensin II (3-8). We demonstrate that MIP technology can be combined with FSCV at CFMs to create rapid and selective sensors for Met-Enk. This technology is a promising platform for creating selective sensors for other peptides and biomarkers.
