Article: Direct observation of triplet state mediated decarboxylation of the neutral and anion forms of ketoprofen in water-rich, acidic, and PBS solutions

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TitleDirect observation of triplet state mediated decarboxylation of the neutral and anion forms of ketoprofen in water-rich, acidic, and PBS solutions
AuthorsLi, MD1
Ma, J1
Su, T1
Liu, M1
Yu, L1
Phillips, DL1
Issue Date2012
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/jpcbfk
CitationJournal Of Physical Chemistry B, 2012, v. 116 n. 20, p. 5882-5887 [How to Cite?]
DOI: http://dx.doi.org/10.1021/jp301555e
AbstractThe decarboxylation reaction of KP in different acetonitrile-water mixtures producing a carbanion or biradical intermediate is investigated by using femtosecond transient absorption and nanosecond time-resolved resonance Raman spectroscopies to unveil the mechanism of the photochemistry of KP. The irradiation of either the neutral or anion forms of KP leads to the excited singlet state KP species transforming into a corresponding triplet state KP species via a highly efficient intersystem crossing, and then, a triplet state mediated decarboxylation reaction occurs to generate a carbanion intermediate in the phosphate buffer solutions or a biradical species in the water-rich or acidic solutions examined here. © 2012 American Chemical Society.
ISSN1520-6106
2011 Impact Factor: 3.696
2011 SCImago Journal Rankings: 0.299
DOIhttp://dx.doi.org/10.1021/jp301555e
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorLi, MD
dc.contributor.authorMa, J
dc.contributor.authorSu, T
dc.contributor.authorLiu, M
dc.contributor.authorYu, L
dc.contributor.authorPhillips, DL
dc.date.accessioned2012-08-16T05:48:29Z
dc.date.available2012-08-16T05:48:29Z
dc.date.issued2012
dc.description.abstractThe decarboxylation reaction of KP in different acetonitrile-water mixtures producing a carbanion or biradical intermediate is investigated by using femtosecond transient absorption and nanosecond time-resolved resonance Raman spectroscopies to unveil the mechanism of the photochemistry of KP. The irradiation of either the neutral or anion forms of KP leads to the excited singlet state KP species transforming into a corresponding triplet state KP species via a highly efficient intersystem crossing, and then, a triplet state mediated decarboxylation reaction occurs to generate a carbanion intermediate in the phosphate buffer solutions or a biradical species in the water-rich or acidic solutions examined here. © 2012 American Chemical Society.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationJournal Of Physical Chemistry B, 2012, v. 116 n. 20, p. 5882-5887 [How to Cite?]
DOI: http://dx.doi.org/10.1021/jp301555e
dc.identifier.doihttp://dx.doi.org/10.1021/jp301555e
dc.identifier.epage5887
dc.identifier.hkuros203416
dc.identifier.issn1520-6106
2011 Impact Factor: 3.696
2011 SCImago Journal Rankings: 0.299
dc.identifier.issue20
dc.identifier.scopuseid_2-s2.0-84862275338
dc.identifier.spage5882
dc.identifier.urihttp://hdl.handle.net/10722/159299
dc.identifier.volume116
dc.languageeng
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/jpcbfk
dc.publisher.placeUnited States
dc.relation.ispartofJournal of Physical Chemistry B
dc.relation.referencesReferences in Scopus
dc.titleDirect observation of triplet state mediated decarboxylation of the neutral and anion forms of ketoprofen in water-rich, acidic, and PBS solutions
dc.typeArticle
Author Affiliations
  1. The University of Hong Kong