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Electron spin dynamics in quantum dots, and the roles of charge transfer excited states in diluted magnetic semiconductors
In this dissertation, photoelectrochemical measurements have been used in combination with absorption and magnetic circular dichroism spectroscopic measurements to investigate the electronic structural properties of nanocrystalline Co2+:ZnO and Mn2+:ZnO diluted magnetic semiconductors that give rise to macroscopic charge ...
Discovery based yeast metabolomic analysis using comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry and chemometrics
Comprehensive two-dimensional (2D) separations are highly beneficial in the characterization of complex samples. The research presented in this dissertation involves the analysis of the small polar molecules comprising the yeast metabolome using commercially available GCxGC-TOFMS instrumentation. The studies described herein ...
Molecular and nanoscale engineering for enhanced order in organic electro-optic materials
Intermolecular interactions play a critical role in organic electro-optic materials. Through careful molecular design and optimization, we explore the effect of these interactions on molecular properties, nanoscale acentric order, and ultimately macroscopic electro-optic activity. Discotic chromophores, designed to reduce ...
Dyeing crystals: 19th century phenomenology to 21st century technology
The linear dichroism of organic light-absorbing molecules (dyes) contained within varied solid matrices are analyzed. Hosts of increasing disorder from single crystals, to organized polycrystalline formations, to polymers are examined. Organic chromophores contained within single crystal hosts serve as optical reporters of ...