Shi Ji-Pei; Zhao Juan; Yang Fan; Wang Jian-Ping
Femtosecond Two-Dimensional Infrared Spectroscopy of N-Ethypropionamide
ACTA PHYSICO-CHIMICA SINICA, 29:695-700, APR 2013

Femtosecond two-dimensional infrared (2D IR) spectroscopy, steady-state infrared spectroscopy, and computational methods are used to examine the ultrafast structural dynamics of a beta-peptide model compound, N-ethylpropionamide (NEPA). NEPA has amide-I vibrational characteristics similar to that in an alpha-peptide, which shows sensitivity to molecular structure and chemical environment. The 2D IR spectral dynamics reveal a spectral diffusion time of similar to 1 ps, which is believed to be consistent with the time scale of the structural dynamics of the amide-water hydrogen bond.

DOI:10.3866/PKU.WHXB201302213

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