Chemistry and Chemical Biology ETDs

Publication Date

Summer 6-26-2023

Abstract

This dissertation describes the construction of two high precision magneto-polarimeters for performing Faraday rotation and Magnetic Circular Dichroism (MCD) measurements of polymer thin-films. There is a focus in materials science on the development of thin-film magneto-optically active materials. These materials could allow for the construction of a thin-film optical diode, an important device for next-generation photonic technology. Upon completion of the Faraday rotation spectrometer, two publications were generated from Faraday rotation measurements of novel polymer thin-film materials.

With growing interest by materials scientists in magneto-optically active transition-metal containing materials, an MCD spectrometer was constructed to study these materials. This spectrometer allowed for the characterization of magneto-optic materials through the entire UV-Vis region of the electro-magnetic spectrum. The previous Faraday rotation spectrometer was monochromatic. Kramers-Kronig analysis was used to gather information about the Faraday rotary power of magneto-optical materials from measured MCD spectra. Porphyrin transition metal complexes demonstrated themselves to be ideal candidates to generate magneto-optical activity. A series of porphyrin complexes were synthesized and characterized using MCD spectroscopy. Relationships between the metal center and ring substituents of the porphyrins and their resulting MCD response is analyzed herein.

Language

English

Document Type

Dissertation

Degree Name

Chemistry

Level of Degree

Doctoral

Department Name

Department of Chemistry and Chemical Biology

First Committee Member (Chair)

Prof. Jeffrey Rack

Second Committee Member

Prof. Martin Kirk

Third Committee Member

Prof. Susan Atlas

Fourth Committee Member

Prof. Dongchang Chen

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