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Title
Synthesis and Characterization of Molecular Catalysts with Applications in Solar Fuels
Description
Metalloporphyrins serve important roles in biological processes and in emerging technologies with applications to energy conversion. When electrochemically activated in solution, metalloporphyrins have the ability to catalyze the conversion of protons into hydrogen fuels. In this report, the synthesis and characterization of zinc, nickel, cobalt and copper analogs of 5,10,15,20-tetrakis(pentafluorophenyl) porphyrin (PF20) and 5,10,15,20-tetra-p-tolyporphyrin (TTP) are described. All target compounds are characterized with UV-Vis spectroscopy and MALDI-TOF mass spectrometry. The freebase porphyrins and non-paramagnetic metalloporphyrins are further characterized by proton nuclear magnetic resonance spectroscopy and all proton resonances are assigned. Electrochemical measurements show the reduction potential of the fluorinated phenyl substituted porphyrins is shifted to less negative values as compared to the reduction potential measured using non-fluorinated analogs. These results illustrate the ability to use fluorine as a synthetic tool for altering the electronic properties of metalloporphyrins. Further, these findings serve a critical role in choosing metalloporphyrin electrocatalysts with the appropriate energetic and optical properties for integration to semiconductors with applications to solar-to- fuels technologies.
Date Created
2018-05
Contributors
- Nanyangwe, Sylvia Kapya (Author)
- Moore, Gary (Thesis director)
- Van Horn, Wade (Committee member)
- School of Criminology and Criminal Justice (Contributor)
- School of Molecular Sciences (Contributor)
- Barrett, The Honors College (Contributor)
Topical Subject
Extent
28 pages
Language
Copyright Statement
In Copyright
Primary Member of
Series
Academic Year 2017-2018
Handle
https://hdl.handle.net/2286/R.I.48340
Level of coding
minimal
Cataloging Standards
System Created
- 2018-04-25 12:10:25
System Modified
- 2021-08-11 04:09:57
- 2 years 8 months ago
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