Transient 2D-IR spectroscopy of thiopeptide isomerization.
Transient 2D-IR spectra have been recorded during the photoreaction of the thioxopeptide Boc-Ala-Gly(S)-Ala-Aib-OMe. We demonstrate the potential of transient 2D-IR spectroscopy to resolve vibrational bands hidden in conventional pump-probe spectra. Different types of transient cross-peak signals are observed, and their information content is discussed by comparison with model spectra.
Cervetto
Valentina
V
Physikalisch-Chemisches Institut, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.
Hamm
Peter
P
Helbing
Jan
J
D006860:Hydrogen Bonding; D007536:Isomerism; D010455:Peptides / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013438:Sulfhydryl Compounds / Q000737:chemistry*
D010455:Peptides; D013438:Sulfhydryl Compounds