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American Chemical Society, The Journal of Physical Chemistry A, 6(105), p. 984-990, 2001

DOI: 10.1021/jp003705w

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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

Journal article published in 2001 by Wm M. Kwok ORCID, C. Ma, P. Matousek, Aw W. Parker, D. Phillips, Wt T. Toner, M. Towrie, S. Umapathy
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

Picosecond time-resolved resonance Raman spectra of the A (intramolecular charge transfer, ICT) state of DMABN, DMABN-d(6) and DMABN-N-15 have been obtained. The isotopic shifts identify the nu (s)(ph-N) mode as a band at 1281 cm(-1). The similar to 96 cm(-1) downshift 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.