Measurement of the trapping rate constants and product studies of quinone derivative inhibitors with phenethyl radicals

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dc.contributor.advisorEngel, Paul S.en_US
dc.creatorPark, Hee Jungen_US
dc.date.accessioned2009-06-03T21:12:18Zen_US
dc.date.available2009-06-03T21:12:18Zen_US
dc.date.issued2007en_US
dc.description.abstractStyrene is one of many industrially important monomers. Polymerization of unsaturated monomers such as styrene is a troublesome problem during storage, transportation and processing. The problem is attenuated by addition of polymerization inhibitors such as quinone derivatives. Despite the importance of quinone type inhibitors, their chemistry is poorly understood. The goal of this research is to better understand the reaction mechanism and rates of alpha-phenethyl radicals with quinone type inhibitors. cis Azo-alpha-phenylethane was used as a new simple, unimolecular, low temperature source of alpha-phenethyl radicals. The absolute rate constants of five quinone type inhibitors (N-oxide, BQ, QM, tBQ and DPQI) with alpha-phenethyl radicals generated from cis azo-alpha-phenylethane were measured by the radical clock method using the stable nitroxide SG1 as the clock. We found that the trapping rate decreased in the order N-oxide>BQ>QM>tBQ>DPQI. Also product studies of BQ and QM with phenethyl radicals were done to augment previous results.en_US
dc.format.extent71 p.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.callnoTHESIS CHEM. 2007 PARKen_US
dc.identifier.citationPark, Hee Jung. "Measurement of the trapping rate constants and product studies of quinone derivative inhibitors with phenethyl radicals." (2007) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/20569">https://hdl.handle.net/1911/20569</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/20569en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectOrganic chemistryen_US
dc.titleMeasurement of the trapping rate constants and product studies of quinone derivative inhibitors with phenethyl radicalsen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentChemistryen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Artsen_US
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