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Article: Time-resolved study of the triplet state of 4-dimethylaminobenzonitrile (DMABN)

TitleTime-resolved study of the triplet state of 4-dimethylaminobenzonitrile (DMABN)
Authors
Issue Date2001
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/jpca
Citation
Journal Of Physical Chemistry A, 2001, v. 105 n. 19, p. 4648-4652 How to Cite?
AbstractNanosecond time-resolved resonance Raman spectra of the triplet states of DMABN, DMABN-d 6, and DMABN-N 15 have been obtained over the frequency range from 700 to 2300 cm -1. Isotopic shifts identify modes associated with the dimethylaniline subgroup. There is no significant difference between spectra recorded in polar and nonpolar solvents implying that the lowest triplet state ( 3T 1) state has only one form. Our results characterize it as planar or near planar in structure, with a high negative charge localization on the cyano group and a substantial loosening of the ring skeleton with conjugation extending to the amino group. Nonradiative deactivation of the singlet intramolecular charge transfer state ( 1ICT) through intersystem crossing is discussed in relation to the transient absorption spectra.
Persistent Identifierhttp://hdl.handle.net/10722/167709
ISSN
2015 Impact Factor: 2.883
2015 SCImago Journal Rankings: 1.231
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorMa, Cen_US
dc.contributor.authorKwok, WMen_US
dc.contributor.authorMatousek, Pen_US
dc.contributor.authorParker, AWen_US
dc.contributor.authorPhillips, Den_US
dc.contributor.authorToner, WTen_US
dc.contributor.authorTowrie, Men_US
dc.date.accessioned2012-10-08T03:10:17Z-
dc.date.available2012-10-08T03:10:17Z-
dc.date.issued2001en_US
dc.identifier.citationJournal Of Physical Chemistry A, 2001, v. 105 n. 19, p. 4648-4652en_US
dc.identifier.issn1089-5639en_US
dc.identifier.urihttp://hdl.handle.net/10722/167709-
dc.description.abstractNanosecond time-resolved resonance Raman spectra of the triplet states of DMABN, DMABN-d 6, and DMABN-N 15 have been obtained over the frequency range from 700 to 2300 cm -1. Isotopic shifts identify modes associated with the dimethylaniline subgroup. There is no significant difference between spectra recorded in polar and nonpolar solvents implying that the lowest triplet state ( 3T 1) state has only one form. Our results characterize it as planar or near planar in structure, with a high negative charge localization on the cyano group and a substantial loosening of the ring skeleton with conjugation extending to the amino group. Nonradiative deactivation of the singlet intramolecular charge transfer state ( 1ICT) through intersystem crossing is discussed in relation to the transient absorption spectra.en_US
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/jpcaen_US
dc.relation.ispartofJournal of Physical Chemistry Aen_US
dc.titleTime-resolved study of the triplet state of 4-dimethylaminobenzonitrile (DMABN)en_US
dc.typeArticleen_US
dc.identifier.emailMa, C:macs@hkucc.hku.hken_US
dc.identifier.authorityMa, C=rp00758en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/jp004497aen_US
dc.identifier.scopuseid_2-s2.0-0035902322en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035902322&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume105en_US
dc.identifier.issue19en_US
dc.identifier.spage4648en_US
dc.identifier.epage4652en_US
dc.identifier.isiWOS:000168803600009-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridMa, C=7402924979en_US
dc.identifier.scopusauthoridKwok, WM=7103129332en_US
dc.identifier.scopusauthoridMatousek, P=7005659005en_US
dc.identifier.scopusauthoridParker, AW=7403267977en_US
dc.identifier.scopusauthoridPhillips, D=22998496000en_US
dc.identifier.scopusauthoridToner, WT=6701364578en_US
dc.identifier.scopusauthoridTowrie, M=7004415080en_US

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