Utilizing ultrafast spectroscopy to characterize energy and electron transfer in RuII based molecular assemblies designed for solar fuel devices
Public Deposited- Last Modified
- March 22, 2019
- Creator
-
Bettis, Stephanie
- Affiliation: College of Arts and Sciences, Department of Chemistry
- Abstract
- This dissertation investigates the ultrafast dynamics in molecular assemblies for use in both dye-sensitized solar cells (DSSCs) and dye-sensitized photo electrosynthesis cells (DSPECs). A detailed kinetic analysis of the dynamics for the peptide and layered molecular assemblies provide insight into the orientation of the chromophores and catalysts substituents. The work was made possible from collaborations with both Dr. Marcey Waters' and Dr. Thomas Meyer's research groups, who provided the molecular assemblies for this study. Ultrafast spectroscopy techniques, such as transient absorption and time-resolved emission, were utilized for the kinetic study. A brief introduction to solar cells and the molecular assemblies studied in the dissertation are described in Chapter 1. The following chapters discuss the ultrafast kinetics of the peptide and layered molecular assemblies. First, Chapter 2 discusses the use of tertiary structure to dictate the position of molecular substituents in a coiled-coil peptide system. Chapter 3 describes the incorporation of an oligoproline peptide chromophore assembly onto a nanocrystalline film for use in DSSCs. The oligoproline scaffold, in Chapter 4, is then used in a DSPEC set up functionalized with both a chromophore and a water oxidation catalyst. Last, the layered approach to a molecular assembly incorporating both a chromophore and water oxidation catalyst on a nanocrystalline TiO2 film is investigated in Chapter 5. Overall the work presented in this dissertation gains insight into the structure and orientation of the chromophores and catalysts in the peptide and layered molecular assembly scaffolds from detailed kinetic analyses.
- Date of publication
- December 2013
- Keyword
- DOI
- Resource type
- Rights statement
- In Copyright
- Advisor
- Papanikolas, John
- Degree
- Doctor of Philosophy
- Graduation year
- 2013
- Language
- Publisher
Relations
- Parents:
This work has no parents.