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Conference Paper: Water concentration dependent photochemistry of ketoprofen in neutral aqueous solutions

TitleWater concentration dependent photochemistry of ketoprofen in neutral aqueous solutions
Authors
Issue Date2010
Citation
The 22nd International Conference on Raman Spectroscopy (ICORS 2010), Boston, MA., 8-13 August 2010. How to Cite?
AbstractThe rate constants and reaction mechanism of ketoprofen were observed to be greatly dependent on the concentration of the solvent in neutral aqueous solutions with varying water concentrations. In neat acetonitrile and solvents with low concentrations of water, ketoprofen displays benzophenone-like photochemistry. However, in solvents with very high concentrations of water, the triplet state ketoprofen is first seen and then experiences a very fast decarboxylation process to produce a triplet protonated biradical carbanion species. For solvents with moderate higher water concentrations, the hydrogen abstraction and decarboxylation processes are two competitive pathways with different rate constants.
DescriptionMonday Poster Session: Time Resolved Raman (MP09) - Poster Number: 156
Persistent Identifierhttp://hdl.handle.net/10722/142715

 

DC FieldValueLanguage
dc.contributor.authorLi, Men_US
dc.contributor.authorDu, Yen_US
dc.contributor.authorXue, Jen_US
dc.contributor.authorPhillips, DLen_US
dc.date.accessioned2011-10-28T02:54:36Z-
dc.date.available2011-10-28T02:54:36Z-
dc.date.issued2010en_US
dc.identifier.citationThe 22nd International Conference on Raman Spectroscopy (ICORS 2010), Boston, MA., 8-13 August 2010.en_US
dc.identifier.urihttp://hdl.handle.net/10722/142715-
dc.descriptionMonday Poster Session: Time Resolved Raman (MP09) - Poster Number: 156-
dc.description.abstractThe rate constants and reaction mechanism of ketoprofen were observed to be greatly dependent on the concentration of the solvent in neutral aqueous solutions with varying water concentrations. In neat acetonitrile and solvents with low concentrations of water, ketoprofen displays benzophenone-like photochemistry. However, in solvents with very high concentrations of water, the triplet state ketoprofen is first seen and then experiences a very fast decarboxylation process to produce a triplet protonated biradical carbanion species. For solvents with moderate higher water concentrations, the hydrogen abstraction and decarboxylation processes are two competitive pathways with different rate constants.-
dc.languageengen_US
dc.relation.ispartofInternational Conference on Raman Spectroscopyen_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleWater concentration dependent photochemistry of ketoprofen in neutral aqueous solutionsen_US
dc.typeConference_Paperen_US
dc.identifier.emailDu, Y: yongdu@hkusua.hku.hken_US
dc.identifier.emailXue, J: jennyxue@hku.hk-
dc.identifier.emailPhillips, DL: phillips@hku.hk-
dc.identifier.authorityPhillips, DL=rp00770en_US
dc.description.naturepostprint-
dc.identifier.hkuros197297en_US
dc.description.otherThe 22nd International Conference on Raman Spectroscopy (ICORS 2010), Boston, MA., 8-13 August 2010.-

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