Vibrational dynamics of ions in glass from fifth-order two-dimensional infrared spectroscopy.
The vibrational dynamics of the first four antisymmetric stretch vibrational levels of azide in an ionic glass have been measured and correlated using a heterodyned fifth-order two-dimensional infrared pulse sequence. By rephasing a two-quantum coherence, a process not possible with third-order spectroscopy, solvent effects on the frequencies and anharmonicities of the potential energy surface are measured. Fifth-order pulse sequences are another step towards precisely controlling vibrational coherence in analogy to the manipulation of spins in NMR but with ultrafast time resolution.
Fulmer
Eric C
EC
Department of Chemistry, University of Wisconsin - Madison, Madison Wisconsin 53706, USA.
Ding
Feng
F
Mukherjee
Prabuddha
P
Zanni
Martin T
MT