Article: Comparison of the absorption, emission, and resonance Raman spectra of 7-hydroxyquinoline and 8-bromo-7-hydroxyquinoline caged acetate

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TitleComparison of the absorption, emission, and resonance Raman spectra of 7-hydroxyquinoline and 8-bromo-7-hydroxyquinoline caged acetate
AuthorsMa, J2
Cheng, SC2
An, H2
Li, MD2
Ma, C2
Rea, AC1
Zhu, Y1
Nganga, JL1
Dore, TM1
Phillips, DL2
Issue Date2011
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/jpca
CitationJournal Of Physical Chemistry A, 2011, v. 115 n. 42, p. 11632-11640 [How to Cite?]
DOI: http://dx.doi.org/10.1021/jp2063172
AbstractTo better understand the deprotection reaction of the new promising phototrigger compound BHQ-OAc (8-bromo-7-hydroxyquinoline acetate), we present a detailed comparison of the UV-vis absorption, resonance Raman, and fluorescence spectra of BHQ-OAc with its parent compound 7-hydroxyquinoline in different solvents. The steady-state absorption and resonance Raman spectra provide fundamental information about the structure, properties, and population distribution of the different prototropic forms present under the different solvent conditions examined. The species present in the excited states that emit strongly were detected by fluorescence spectra. It is shown that the ground-state tautomerization process of BHQ-OAc is disfavored compared with that of 7-HQ in aqueous solutions. The observation of the tautomeric form of BHQ-OAc in neutral aqueous solutions demonstrates the occurrence of the excited-state proton-transfer process, which would be a competing process for the deprotection reaction of BHQ-OAc in aqueous solutions. © 2011 American Chemical Society.
ISSN1089-5639
2011 Impact Factor: 2.946
2011 SCImago Journal Rankings: 0.212
DOIhttp://dx.doi.org/10.1021/jp2063172
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorMa, J
dc.contributor.authorCheng, SC
dc.contributor.authorAn, H
dc.contributor.authorLi, MD
dc.contributor.authorMa, C
dc.contributor.authorRea, AC
dc.contributor.authorZhu, Y
dc.contributor.authorNganga, JL
dc.contributor.authorDore, TM
dc.contributor.authorPhillips, DL
dc.date.accessioned2012-08-16T05:48:29Z
dc.date.available2012-08-16T05:48:29Z
dc.date.issued2011
dc.description.abstractTo better understand the deprotection reaction of the new promising phototrigger compound BHQ-OAc (8-bromo-7-hydroxyquinoline acetate), we present a detailed comparison of the UV-vis absorption, resonance Raman, and fluorescence spectra of BHQ-OAc with its parent compound 7-hydroxyquinoline in different solvents. The steady-state absorption and resonance Raman spectra provide fundamental information about the structure, properties, and population distribution of the different prototropic forms present under the different solvent conditions examined. The species present in the excited states that emit strongly were detected by fluorescence spectra. It is shown that the ground-state tautomerization process of BHQ-OAc is disfavored compared with that of 7-HQ in aqueous solutions. The observation of the tautomeric form of BHQ-OAc in neutral aqueous solutions demonstrates the occurrence of the excited-state proton-transfer process, which would be a competing process for the deprotection reaction of BHQ-OAc in aqueous solutions. © 2011 American Chemical Society.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationJournal Of Physical Chemistry A, 2011, v. 115 n. 42, p. 11632-11640 [How to Cite?]
DOI: http://dx.doi.org/10.1021/jp2063172
dc.identifier.doihttp://dx.doi.org/10.1021/jp2063172
dc.identifier.epage11640
dc.identifier.hkuros203405
dc.identifier.isiWOS:000296204500019
dc.identifier.issn1089-5639
2011 Impact Factor: 2.946
2011 SCImago Journal Rankings: 0.212
dc.identifier.issue42
dc.identifier.pmid21905734
dc.identifier.scopuseid_2-s2.0-80054889304
dc.identifier.spage11632
dc.identifier.urihttp://hdl.handle.net/10722/159297
dc.identifier.volume115
dc.languageeng
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/jpca
dc.publisher.placeUnited States
dc.relation.ispartofJournal of Physical Chemistry A
dc.relation.referencesReferences in Scopus
dc.subject.meshAcetates - chemistry
dc.subject.meshBromides - chemistry
dc.subject.meshChemistry, Physical
dc.subject.meshHydrogen-Ion Concentration
dc.subject.meshHydroxyquinolines - chemistry
dc.subject.meshKinetics
dc.subject.meshMolecular Structure
dc.subject.meshPhotoelectron Spectroscopy
dc.subject.meshProtons
dc.subject.meshSolutions
dc.subject.meshSolvents - chemistry
dc.subject.meshSpectrometry, Fluorescence
dc.subject.meshSpectrum Analysis, Raman
dc.subject.meshVibration
dc.subject.meshWater - chemistry
dc.titleComparison of the absorption, emission, and resonance Raman spectra of 7-hydroxyquinoline and 8-bromo-7-hydroxyquinoline caged acetate
dc.typeArticle
Author Affiliations
  1. The University of Georgia
  2. The University of Hong Kong