File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Observation of singlet cycloreversion of thymine oxetanes by direct photolysis

TitleObservation of singlet cycloreversion of thymine oxetanes by direct photolysis
Authors
Issue Date2008
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/jpcbfk
Citation
Journal Of Physical Chemistry B, 2008, v. 112 n. 37, p. 11794-11797 How to Cite?
AbstractAn ultrafast broadband transient absorption spectroscopic study of the direct photolysis of oxetane DMT-BP [which is the oxetane adduct of 1,3-dimethylthymine (DMT) with benzophenone (BP)] is presented. Previous nanosecond time-resolved absorption studies by other researchers observed that direct photolysis of such oxetanes results in a rare, adiabatic photochemical reaction to produce a triplet excited-state carbonyl species. However, the mechanism for this adiabatic photochemical reaction remained unclear for the reaction sequence of the bond scission and the intersystem crossing (ISC) because of the time resolution for the experiments, and this prompted us to further study its mechanism with ultrafast time-resolution. The ultrafast time-resolved spectra presented here indicate that the cycloreversion reaction occurs in a stepwise manner on a singlet excited-state, and then intersystem crossing (ISC) occurs to produce the triplet carbonyl product observed in the previously reported nanosecond time-resolved experiments. © 2008 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/58380
ISSN
2015 Impact Factor: 3.187
2015 SCImago Journal Rankings: 1.414
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of Hong KongHKU-7039/ 07P
Croucher Foundation
Croocher Foundation Senior Research
University of Hong Kong
Funding Information:

This research was supported by grants from the Research Grants Council of Hong Kong (HKU-7039/ 07P) to D.L.P. and (Poly U-7029/07P) to W.M.K. D.L.P. thanks the Croucher Foundation for the award of a Croocher Foundation Senior Research Fellowship (2006-07) and the University of Hong Kong for an Outstanding Researcher Award (2006).

References

 

DC FieldValueLanguage
dc.contributor.authorKwok, WMen_HK
dc.contributor.authorGuan, Xen_HK
dc.contributor.authorChu, LMen_HK
dc.contributor.authorTang, Wen_HK
dc.contributor.authorPhillips, DLen_HK
dc.date.accessioned2010-05-31T03:29:17Z-
dc.date.available2010-05-31T03:29:17Z-
dc.date.issued2008en_HK
dc.identifier.citationJournal Of Physical Chemistry B, 2008, v. 112 n. 37, p. 11794-11797en_HK
dc.identifier.issn1520-6106en_HK
dc.identifier.urihttp://hdl.handle.net/10722/58380-
dc.description.abstractAn ultrafast broadband transient absorption spectroscopic study of the direct photolysis of oxetane DMT-BP [which is the oxetane adduct of 1,3-dimethylthymine (DMT) with benzophenone (BP)] is presented. Previous nanosecond time-resolved absorption studies by other researchers observed that direct photolysis of such oxetanes results in a rare, adiabatic photochemical reaction to produce a triplet excited-state carbonyl species. However, the mechanism for this adiabatic photochemical reaction remained unclear for the reaction sequence of the bond scission and the intersystem crossing (ISC) because of the time resolution for the experiments, and this prompted us to further study its mechanism with ultrafast time-resolution. The ultrafast time-resolved spectra presented here indicate that the cycloreversion reaction occurs in a stepwise manner on a singlet excited-state, and then intersystem crossing (ISC) occurs to produce the triplet carbonyl product observed in the previously reported nanosecond time-resolved experiments. © 2008 American Chemical Society.en_HK
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/jpcbfken_HK
dc.relation.ispartofJournal of Physical Chemistry Ben_HK
dc.titleObservation of singlet cycloreversion of thymine oxetanes by direct photolysisen_HK
dc.typeArticleen_HK
dc.identifier.emailPhillips, DL:phillips@hku.hken_HK
dc.identifier.authorityPhillips, DL=rp00770en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/jp803099sen_HK
dc.identifier.pmid18717552-
dc.identifier.scopuseid_2-s2.0-53049088450en_HK
dc.identifier.hkuros157116en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-53049088450&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume112en_HK
dc.identifier.issue37en_HK
dc.identifier.spage11794en_HK
dc.identifier.epage11797en_HK
dc.identifier.isiWOS:000259140600044-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridKwok, WM=7103129332en_HK
dc.identifier.scopusauthoridGuan, X=8313149700en_HK
dc.identifier.scopusauthoridChu, LM=8595123000en_HK
dc.identifier.scopusauthoridTang, W=13309270500en_HK
dc.identifier.scopusauthoridPhillips, DL=7404519365en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats