Thumbnail Image
Item

A Route to Surface-bound Metalloporphyrins as Models for Oxygen Reduction Catalysts

Van Wyck, Stephen J
Citations
Altmetric:
License
License
http://creativecommons.org/licenses/by-nc-nd/3.0/
DOI
Abstract
The attachment nonmetal and magnesium ethynyl terminated porphyrin (TEPP and MgTEPP) to glassy carbon electrode was achieved through voltammetry. These attached porphyrins were studied by cyclic voltammetry (CV) and UV-visible spectroscopy. Surface-bound TEPP displayed reversible oxidation and reduction (E1/2 = 0.52 V and E1/2 = -1.74 V vs. ferrocene), and absorbance peak of 425 nm on indium tin oxide (ITO). While surface-bound MgTEPP possessed two reversible oxidations (E1/2 = 0.61 V and E1/2 = 0.97 V vs. Ag/AgCl) and an irreversible (Epc = -1.65 V vs. Ag/AgCl). MgTEPP had an absorbance maximum at 431 nm on ITO. Both porphyrins had irreversible pre-waves, which could be regenerated. This is the first example of covalently-bound Mg porphyrin to an electrode surface.
Description
Date
2017-01-01
Journal Title
Journal ISSN
Volume Title
Publisher
Collections
Undergraduate Theses: Patrick Leahy Honors College
Show all metadata
Files
Thumbnail Image
Final_Version_pdf.pdf
Adobe PDF, 1.32 MB
Research Projects
Organizational Units
Journal Issue
Citation
URI
https://hdl.handle.net/20.500.14849/5081
DOI
Embedded videos