Resonance Raman study of ring deuterated 4-dimethylaminobenzonitrile (DMABN-d4): The ground, ICT and triplet states

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

doi:10.1016/S1010-6030(01)00512-3

Resonance Raman study of ring deuterated 4-dimethylaminobenzonitrile (DMABN-d₄): The ground, ICT and triplet states

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

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

20 Citations (Scopus)

Abstract

Picosecond and nanosecond time-resolved resonance Raman spectra of the intramolecular charge transfer (ICT) and triplet state of DMABN-d4have been obtained over the frequency range from 650 to 2250cm-1. The spectra and the isotopic shifts observed on going from normal DMABN to the ring deuterated analogue are interpreted with the aid of DFT vibrational analysis of ground state spectra and comparisons made with closely related compounds. The data confirm our previous results but the isotopic shifts induced by the ring deuteration provide additional evidence clarifying the planar structure of the triplet state and indicating full localisation of negative charge on the cyano group.

Original language	English
Pages (from-to)	177-185
Number of pages	9
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	142
Issue number	2-3
DOIs	https://doi.org/10.1016/S1010-6030(01)00512-3
Publication status	Published - 14 Sept 2001
Externally published	Yes

Keywords

4-Dimethylaminobenzonitrile (DMABN)
Intramolecular charge transfer reaction
TICT
Triplet state

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Physics and Astronomy

More information

10.1016/S1010-6030(01)00512-3

Cite this

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title = "Resonance Raman study of ring deuterated 4-dimethylaminobenzonitrile (DMABN-d4): The ground, ICT and triplet states",

abstract = "Picosecond and nanosecond time-resolved resonance Raman spectra of the intramolecular charge transfer (ICT) and triplet state of DMABN-d4have been obtained over the frequency range from 650 to 2250cm-1. The spectra and the isotopic shifts observed on going from normal DMABN to the ring deuterated analogue are interpreted with the aid of DFT vibrational analysis of ground state spectra and comparisons made with closely related compounds. The data confirm our previous results but the isotopic shifts induced by the ring deuteration provide additional evidence clarifying the planar structure of the triplet state and indicating full localisation of negative charge on the cyano group.",

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

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T1 - Resonance Raman study of ring deuterated 4-dimethylaminobenzonitrile (DMABN-d4): The ground, ICT and triplet states

AU - Ma, C.

AU - Kwok, Wai Ming

AU - Matousek, P.

AU - Parker, A. W.

AU - Phillips, D.

AU - Toner, W. T.

AU - Towrie, M.

PY - 2001/9/14

Y1 - 2001/9/14

N2 - Picosecond and nanosecond time-resolved resonance Raman spectra of the intramolecular charge transfer (ICT) and triplet state of DMABN-d4have been obtained over the frequency range from 650 to 2250cm-1. The spectra and the isotopic shifts observed on going from normal DMABN to the ring deuterated analogue are interpreted with the aid of DFT vibrational analysis of ground state spectra and comparisons made with closely related compounds. The data confirm our previous results but the isotopic shifts induced by the ring deuteration provide additional evidence clarifying the planar structure of the triplet state and indicating full localisation of negative charge on the cyano group.

AB - Picosecond and nanosecond time-resolved resonance Raman spectra of the intramolecular charge transfer (ICT) and triplet state of DMABN-d4have been obtained over the frequency range from 650 to 2250cm-1. The spectra and the isotopic shifts observed on going from normal DMABN to the ring deuterated analogue are interpreted with the aid of DFT vibrational analysis of ground state spectra and comparisons made with closely related compounds. The data confirm our previous results but the isotopic shifts induced by the ring deuteration provide additional evidence clarifying the planar structure of the triplet state and indicating full localisation of negative charge on the cyano group.

KW - 4-Dimethylaminobenzonitrile (DMABN)

KW - Intramolecular charge transfer reaction

KW - TICT

KW - Triplet state

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DO - 10.1016/S1010-6030(01)00512-3

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JO - Journal of Photochemistry and Photobiology A: Chemistry

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