Two-dimensional infrared spectroscopy: an emerging analytical tool?

Abstract

Recent progress in laser technology and data analysis methods has enabled high throughput applications of ultrafast two-dimensional infrared (2D-IR) spectroscopy measurements and opened the door to analytical applications.

Probing the molecular structure of aqueous triiodide via X-ray photoelectron spectroscopy and correlated electron phenomena

“…Coupled with finer sampling of nuclear coordinate space to produce associated simulated spectra and/or scattering patterns, such efforts can be expected to largely resolve the uncertainties surrounding the I 3 − GS equilibrium geometry. Associated results may correspondingly be benchmarked against existing infrared spectroscopy experiments 85 and perhaps more modern multi-dimensional variants, 90–92 when applied to the solvated I 3 − system. Considering our suggestion that more asymmetric electronic GS I 3 − anion geometries may dominate at the aqueous–gas–phase interface in comparison to the aqueous bulk, similar potential energy surface calculations may be performed that explicitly address partial, interfacial hydration and its effects on the anion molecular structure.…”

Broadband Multidimensional Spectroscopy Identifies the Amide II Vibrations in Silkworm Films

“…To solve this, we can use two-dimensional infrared spectroscopy (2DIR) [ 20 , 21 , 22 , 23 , 24 ]. Compared to linear infrared where the absorption of the infrared beam is recorded, 2DIR spectroscopy is nonlinear spectroscopy that reveals the change in the infrared spectrum as a function of the frequency of a preceding infrared pump laser pulse.…”

Solution NMR methods for structural and thermodynamic investigation of nanoparticle adsorption equilibria

“…[83][84][85]92 Qualitative analysis of binding. Two-dimensional infrared spectroscopy (2D-IR) 93,94 provides a high-resolution picture of the IR-active functionality in the investigated sample and has been utilized in several qualitative investigations of surface adsorption. For example, 2D-IR spectroscopy allowed the characterization of the structure and mobility of the capping layer comprised of amide and carboxylate-containing ligands on gold NPs.…”