Vibrational energy transport in molecules studied by relaxation-assisted two-dimensional infrared spectroscopy.

Autor: Rubtsova NI; Department of Chemistry, Tulane University, New Orleans, Louisiana 70118; email: irubtsov@tulane.edu., Rubtsov IV
Jazyk: angličtina
Zdroj: Annual review of physical chemistry [Annu Rev Phys Chem] 2015 Apr; Vol. 66, pp. 717-38. Date of Electronic Publication: 2015 Feb 26.
DOI: 10.1146/annurev-physchem-040214-121337
Abstrakt: This review presents an overview of the relaxation-assisted two-dimensional infrared (RA 2DIR) spectroscopy method for measuring structures and energy transport dynamics in molecules. The method strongly enhances the range of accessible distances compared to traditional 2DIR and offers new structural reporters, such as the energy transport time, cross-peak amplification factors, and connectivity patterns. The use of the method for assigning vibrational modes with various levels of delocalization is illustrated. RA 2DIR relies on vibrational energy transport in molecules; as such, the transport mechanism can be conveniently studied by the method. Applications to identify diffusive and ballistic energy transport are demonstrated.
Databáze: MEDLINE