Degree Name
MS (Master of Science)
Program
Chemistry
Date of Award
5-2024
Committee Chair or Co-Chairs
Gregory W. Bishop
Committee Members
Dane W. Scott, Catherine E. McCusker
Abstract
Electrochemiluminescence (ECL) is a phenomenon whereby electrochemical reactions generate a product that is capable of emitting light. ECL’s high sensitivity, selectivity, extremely low background, and relatively simple instrumentation make it particularly well-suited for chemical sensing and biosensing strategies. Here we report a simple ECL imaging system based on a camera interfaced with a zoom lens to compare pencil graphite electrode (PGE) and screen-printed carbon electrode (SPCE) arrays as ECL platforms. With this system, ECL signals generated from tris(2,2′- bipyridine)ruthenium(II) chloride hexahydrate ([Ru(bpy)3]2+) using co-reactant tri-n-propylamine (TPA) were linear with respect to [Ru(bpy)3]2+ concentrations from 9 to 450 μM. Detection limits for [Ru(bpy)3]2+ were found to be 1.8 μM with PGEs and 0.9 μM with SPCEs. Immobilization of a thin polyvinylpyridine (PVP) film ECL reporter [Ru(bpy)2(PVP)10]2+ on SPCEs was also investigated. Overall, the combination of PGEs or SPCEs with the simple ECL imaging system offers a cost-effective approach to ECL-based sensing and biosensing.
Document Type
Thesis - embargo
Recommended Citation
Ehigiator, Sandra, "Electrochemiluminescence using Pencil Graphite Electrodes and Screen-printed Carbon Electrodes Interfaced with a Simple Imaging System" (2024). Electronic Theses and Dissertations. Paper 4339. https://dc.etsu.edu/etd/4339
Copyright
Copyright by Sandra Omono Ehigiator