Ultrafast 2D–IR Spectroscopy of Transient Species

Bredenbeck, Jens; Helbing, Jan; Kolano, Christoph; Hamm, Peter

doi:10.1002/cphc.200700148

Cited by 112 publications

(130 citation statements)

References 69 publications

Supporting

Mentioning

125

Contrasting

Unclassified

Order By: Relevance

“…It could very well be that the small 5-ps component observed in the fs-MIR pump-probe experiments reported here is brought about by some small remaining population of intramolecular H-bond contacts involving the amino group as donor. More sophisticated experiments including femtosecond 2-dimensional infrared (2DIR) spectroscopy [46][47][48][49][50][51][52][53] in combination with more elaborate molecular dynamics simulations are required to solve this interesting aspect.…”

Section: Resultsmentioning

confidence: 99%

OH and NH Stretching Vibrational Relaxation of Liquid Ethanolamine

Knop

Lindner

Vöhringer³

2011

Zeitschrift Für Physikalische Chemie

View full text Add to dashboard Cite

Vibrational Relaxation / Liquid Dynamics / Hydrogen-Bonding / Ultrafast SpectroscopyFemtosecond mid-infrared pump-probe spectroscopy was carried out to obtain information about the dynamics of vibrational energy relaxation in liquid ethanolamine at room temperature and ambient pressure. Through partial deuteration it was possible to disentangle the dynamics resulting from the OH and the NH stretching modes that proceed independently and simultaneously in the hydrogen-bonded liquid following an ultrafast vibrational excitation by a resonant mid-infrared pulse. The OH-stretching vibrational lifetime was determined to be 450 fs while the NH-stretching lifetime was found to be 1.2 ps. This large difference in lifetimes highlights the importance of the hydrogen-donating and the hydrogen-accepting character of the vibrating groups that are engaged in hydrogen-bonding.

show abstract

Section: Resultsmentioning

confidence: 99%

OH and NH Stretching Vibrational Relaxation of Liquid Ethanolamine

Knop

Lindner

Vöhringer³

2011

Zeitschrift Für Physikalische Chemie

View full text Add to dashboard Cite

show abstract

“…In such an experiment, an actinic pump pulse triggers a non-equilibrium process and a transient 2D IR pulse sequence is used at a later delay time to explore the response of the sample (see Refs. [35][36][37][38] for reviews). Examples include studies of the folding/unfolding of small peptides after the photoreaction of an artificially incorporated molecular group [6, 39,40] or after a temperature jump [9,10].…”

Section: Advancing the Sensitivitymentioning

confidence: 99%

Fast infrared spectroscopy of protein dynamics: advancing sensitivity and selectivity

Koziol

Johnson

Stucki-Buchli

et al. 2015

Current Opinion in Structural Biology

Self Cite

View full text Add to dashboard Cite

2D-IR spectroscopy has matured to a powerful technique to study the structure and dynamics of peptides, but its extension to larger proteins is still in its infancy, the major limitations being sensitivity and selectivity. Site-selective information requires measuring single vibrational probes at sub-millimolar concentrations where most proteins are still stable, which is a severe challenge for conventional (FT)IR spectroscopy. Besides its ultrafast time-resolution, a so far largely underappreciated potential of 2D-IR spectroscopy lies in its sensitivity gain. The present paper sets the goals and outlines strategies how to use that sensitivity gain together with properly designed vibrational labels to make IR spectroscopy a versatile tool to study a wide class of proteins. Abstract Abstract: 2D-IR spectroscopy has matured to a powerful technique to study the structure

show abstract

“…The extension of 2D-IR spectroscopy to excited states via socalled transient or non-equilibrium 2D-IR spectroscopy (T-2D-IR) experiments was first reported in 2003 28 and it has since been demonstrated for a selection of inorganic molecules. 29,30 The advantage of T-2D-IR is that the additional structural and dynamic insight and sub-picosecond time resolution offered by ground state 2D-IR spectroscopy becomes accessible for probing electronically-excited states and for following photochemical processes. Thus far however, the uptake of these methods within the inorganic chemistry community remains small.…”

Section: Introductionmentioning

confidence: 99%

Transient 2D-IR spectroscopy of inorganic excited states

Hunt¹

2014

Dalton Trans.

View full text Add to dashboard Cite

The Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output.Journal Name Time-resolved infrared spectroscopy has been proven to be a powerful tool for investigating the structure, dynamics and reactivity of electronically-excited states of inorganic molecules. As applications drive the production of ever more complex molecules however, experimental tools that can deliver more detailed spectroscopic information, or separate multiple contributions to complex signals will become increasingly valuable. In this Perspective, the extension of ultrafast infrared spectroscopy of inorganic excited states to a second frequency dimension using transient 2D-IR spectroscopy (T-2D-IR) methods is discussed. Following a brief discussion of the experimental methodologies, examples will be given of applications of T-2D-IR ranging from studies of the spectroscopy, structure and dynamics of photochemical intermediates to new tools for correlating vibrational modes in ground and excited electronic states and the investigation of excited state solvation dynamics. Future directions for these experiments are also discussed.

show abstract

Ultrafast 2D–IR Spectroscopy of Transient Species

Cited by 112 publications

References 69 publications

OH and NH Stretching Vibrational Relaxation of Liquid Ethanolamine

OH and NH Stretching Vibrational Relaxation of Liquid Ethanolamine

Fast infrared spectroscopy of protein dynamics: advancing sensitivity and selectivity

Transient 2D-IR spectroscopy of inorganic excited states

Contact Info

Product

Resources

About