Anharmonic Vibrational Dynamics of DNA Oligomers

Abstract

Combining two-color infared pump-probe spectroscopy and anharmonic force field calculations we characterize the anharmonic coupling patterns between fingerprint modes and the hydrogen-bonded symmetric NH${}_2$ stretching vibration in adenine-thymine dA${}_{20}$-dT${}_{20}$ DNA oligomers. Specifically, it is shown that the anharmonic coupling between the NH${}_2$ bending and the CO stretching vibration, both absorbing around 1665 cm-1, can be used to assign the NH${}_2$ fundamental transition at 3215 cm-1 despite the broad background absorption of water.

CECAM Workshop on Energy Flow Dynamics in Biomaterial Systems, Paris, October 2007

References in corpus (2)

• QM/MM Lineshape Simulation of the Hydrogen-bonded Uracil NH Stretching Vibration of the Adenine:Uracil Base Pair in CDCl${}_3$
• Anharmonic Vibrational Dynamics of DNA Oligomers

Cited by in corpus (2)

• QmeQ 1.0: An open-source Python package for calculations of transport through quantum dot devices
• Anharmonic Vibrational Dynamics of DNA Oligomers