Vibrational spectroscopy in cryogenic solutions: application of thermal lensing and Fourier transform techniques to the study of molecular C-H overtone transitions.

dc.contributor.advisorManzanares, Carlos E.
dc.contributor.authorLopez-Calvo, Alfredo.
dc.contributor.departmentChemistry and Biochemistry.en
dc.contributor.otherBaylor University. Dept. of Chemistry and Biochemistry.en
dc.date.accessioned2007-01-22T21:58:23Z
dc.date.available2007-01-22T21:58:23Z
dc.date.copyright2006-08
dc.date.issued2007-01-22T21:58:23Z
dc.descriptionIncludes bibliographical references (p. 230-241).en
dc.description.abstractThis dissertation explores the application of thermal lensing to vibrational overtone spectroscopy in cryosolutions. Specifically, C-H (delta v = 6) overtone spectra of hydrocarbons dissolved in liquefied rare gases are presented. In addition, Fourier transform (IR, NIR, VIS) spectra between 5000 and 15000 cm-1 are provided for each sample. Main contents were organized in five chapters. First, an introduction on the thermal lens effect, covering principles, theoretical modeling, and general applications. Second, delineation of experimental procedures and instrumental setups. Third, a thorough analysis of thermal lens intensities in methane-argon and methane-nitrogen solutions. Particular topics include concentration and solvent dependency, detection limits, and time-profiles in single and dual-beam experiments. Fourth, description of overtone spectra of saturated hydrocarbons (ethane, propane, butane, isobutane) and calculation of local-mode parameters. And fifth, a similar analysis as before for alkene (ethylene, propylene, isobutylene, cis-2-butene, trans-2-butene) solutions. The main conclusion of the project is the successful applicability of thermal lensing to cryogenic samples, showing comparable performance to room-temperature studies.en
dc.description.degreePh.D.en
dc.description.statementofresponsibilityby Alfredo Lopez-Calvo.en
dc.format.extentxvii, 241 p. : ill.en
dc.format.extent138580 bytes
dc.format.extent4154140 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2104/4873
dc.language.isoen_USen
dc.rightsBaylor University theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. Contact librarywebmaster@baylor.edu for inquiries about permission.en
dc.rights.accessrightsWorldwide accessen
dc.subjectVibrational spectra.en
dc.subjectMolecular spectra.en
dc.subjectLow temperature research.en
dc.titleVibrational spectroscopy in cryogenic solutions: application of thermal lensing and Fourier transform techniques to the study of molecular C-H overtone transitions.en
dc.typeThesisen

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