The development of robust electrodes modified with redox-active molecules is an important area of research in modern electrochemistry, with potential impact in fields ranging from alternative fuel production to advanced sensing materials. In these devices, control of the molecular topology of electrode-catalyst interfaces is essential. However, current methods for preparing well-defined functionalized electrodes remain highly limited.Using previously reported carbon electrodes modified with mono-layers of phenylacetylene, we have developed conditions for on-electrode cross-coupling reactions to prepare well-defined functionalized electrodes. Conditions for both Sonagashira and Glaser couplings have been developed, and the modified electrodes have been characterized using a variety of electrochemical and surface analysis techniques. These carbon-carbon bond-forming reactions offer the ability to prepare highly complex, well-defined modified electrode surfaces. The results of our preliminary studies using simple redox probes, as well as comparison of these techniques to previous systems will be discussed.

Functionalizing electrode materials via on surface cross-coupling reactions

244th National Meeting (2012)

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