Two Dimensional Infrared Spectroscopy: A Structure Sensitive Technique with Ultrafast Time Resolution

In the recent years, 2D IR spectroscopy has evolved as a structure sensitive experimental technique to study ultrafast structural and conformational dynamics across broad fields of science. This article explains the 2D IR experimental methodology and provides a qualitative understanding of the basics principles and spectral signatures of the various dynamical processes. A comprehensive review of various 2D IR investigations provide an in-depth understanding of the applications of this spectroscopic technique in chemistry, materials, and biology. Recent technological advances are discussed to explain the future scope of 2D IR in deciphering the molecular structure-function relation.