Electronic spectroscopy of biological relevant species and their complexes with solvent molecules Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/fb494c03k

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • In this dissertation, I present electronic spectroscopy of a few biologically relevant species and their complexes with solvent molecules in the gas phase using a variety of techniques, including resonantly enhanced multiphoton ionization (REMPI), laser induced fluorescence (LIF), and zero kinetic energy (ZEKE) photoelectron spectroscopy. My work on several methylated uracils and thymines and thymine-water complexes alludes to a new interpretation with regard to the origin of the photostability of our genetic code. I believe that it is the water solvent that stabilizes the photophysical and photochemical behavior of these bases under UV irradiation. For systems that demonstrate vibrational resolution in the first electronically excited state (S₁) and the cationic state, I performed vibrational analysis of both states with the aid of ab initio and density functional calculations. These observations are explained in terms of the structural changes from the ground state to S₁ and further to the cation. To bridge results from the gas phase to the solution phase, I also report studies of supersonically cooled water complexes of the three isomers of aminobenzoic acid. Density functional theory calculations are carried out to identify structural minima of water complexes in the ground state. The solvation mechanism is investigated based on vibrational analysis of the S₁ state of the neutral complex and the shift of ionization thresholds with increasing water content.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome, 8-bit Grayscale) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-06-11T17:44:11Z (GMT) No. of bitstreams: 1 HeYonggang2005.pdf: 3810463 bytes, checksum: 73ec7de6d7791f412cc3fcee4e6bdaa6 (MD5)
  • description.provenance : Made available in DSpace on 2012-06-11T17:48:59Z (GMT). No. of bitstreams: 1 HeYonggang2005.pdf: 3810463 bytes, checksum: 73ec7de6d7791f412cc3fcee4e6bdaa6 (MD5) Previous issue date: 2005-01-27
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-06-11T17:48:59Z (GMT) No. of bitstreams: 1 HeYonggang2005.pdf: 3810463 bytes, checksum: 73ec7de6d7791f412cc3fcee4e6bdaa6 (MD5)
  • description.provenance : Submitted by Tamera Ontko (toscannerosu@gmail.com) on 2012-05-15T20:23:31Z No. of bitstreams: 1 HeYonggang2005.pdf: 3810463 bytes, checksum: 73ec7de6d7791f412cc3fcee4e6bdaa6 (MD5)

Relationships

In Administrative Set:
Last modified: 08/09/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items