A determination of the structure of the intramolecular charge transfer state of 4-dimethylaminobenzonitrile (DMABN) by time-resolved resonance raman spectroscopy

Wai Ming Kwok; C. Ma; P. Matousek; A. W. Parker; D. Phillips; W. T. Toner; M. Towrie; S. Umapathy

doi:10.1021/jp003705w

A determination of the structure of the intramolecular charge transfer state of 4-dimethylaminobenzonitrile (DMABN) by time-resolved resonance raman spectroscopy

Wai Ming Kwok, C. Ma, P. Matousek, A. W. Parker, D. Phillips, W. T. Toner, M. Towrie, S. Umapathy

Research output: Journal article publication › Journal article › Academic research › peer-review

103 Citations (Scopus)

Abstract

Picosecond time-resolved resonance Raman spectra of the A (intramolecular charge transfer, ICT) state of DMABN, DMABN-d6and DMABN-15N have been obtained. The isotopic shifts identify the vs(ph-N) mode as a band at 1281 cm-1. The ∼96 cm-1downshift of this mode from its ground state frequency rules out the electronic coupling PICT model and unequivocally supports the electronic decoupling TICT model. However, our results suggest some pyramidal character of the A state amino conformation.

Original language	English
Pages (from-to)	984-990
Number of pages	7
Journal	Journal of Physical Chemistry A
Volume	105
Issue number	6
DOIs	https://doi.org/10.1021/jp003705w
Publication status	Published - 15 Feb 2001
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry

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10.1021/jp003705w

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title = "A determination of the structure of the intramolecular charge transfer state of 4-dimethylaminobenzonitrile (DMABN) by time-resolved resonance raman spectroscopy",

abstract = "Picosecond time-resolved resonance Raman spectra of the A (intramolecular charge transfer, ICT) state of DMABN, DMABN-d6and DMABN-15N have been obtained. The isotopic shifts identify the vs(ph-N) mode as a band at 1281 cm-1. The ∼96 cm-1downshift of this mode from its ground state frequency rules out the electronic coupling PICT model and unequivocally supports the electronic decoupling TICT model. However, our results suggest some pyramidal character of the A state amino conformation.",

author = "Kwok, {Wai Ming} and C. Ma and P. Matousek and Parker, {A. W.} and D. Phillips and Toner, {W. T.} and M. Towrie and S. Umapathy",

year = "2001",

month = feb,

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doi = "10.1021/jp003705w",

language = "English",

volume = "105",

pages = "984--990",

journal = "Journal of Physical Chemistry A",

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A determination of the structure of the intramolecular charge transfer state of 4-dimethylaminobenzonitrile (DMABN) by time-resolved resonance raman spectroscopy. / Kwok, Wai Ming; Ma, C.; Matousek, P. et al.
In: Journal of Physical Chemistry A, Vol. 105, No. 6, 15.02.2001, p. 984-990.

Research output: Journal article publication › Journal article › Academic research › peer-review

TY - JOUR

T1 - A determination of the structure of the intramolecular charge transfer state of 4-dimethylaminobenzonitrile (DMABN) by time-resolved resonance raman spectroscopy

AU - Kwok, Wai Ming

AU - Ma, C.

AU - Matousek, P.

AU - Parker, A. W.

AU - Phillips, D.

AU - Toner, W. T.

AU - Towrie, M.

AU - Umapathy, S.

PY - 2001/2/15

Y1 - 2001/2/15

N2 - Picosecond time-resolved resonance Raman spectra of the A (intramolecular charge transfer, ICT) state of DMABN, DMABN-d6and DMABN-15N have been obtained. The isotopic shifts identify the vs(ph-N) mode as a band at 1281 cm-1. The ∼96 cm-1downshift of this mode from its ground state frequency rules out the electronic coupling PICT model and unequivocally supports the electronic decoupling TICT model. However, our results suggest some pyramidal character of the A state amino conformation.

AB - Picosecond time-resolved resonance Raman spectra of the A (intramolecular charge transfer, ICT) state of DMABN, DMABN-d6and DMABN-15N have been obtained. The isotopic shifts identify the vs(ph-N) mode as a band at 1281 cm-1. The ∼96 cm-1downshift of this mode from its ground state frequency rules out the electronic coupling PICT model and unequivocally supports the electronic decoupling TICT model. However, our results suggest some pyramidal character of the A state amino conformation.

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U2 - 10.1021/jp003705w

DO - 10.1021/jp003705w

M3 - Journal article

SN - 1089-5639

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JO - Journal of Physical Chemistry A

JF - Journal of Physical Chemistry A

IS - 6

ER -

A determination of the structure of the intramolecular charge transfer state of 4-dimethylaminobenzonitrile (DMABN) by time-resolved resonance raman spectroscopy

Abstract

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