scholarly journals 3P226 Ultrafast Pump-Probe Study of Primary Reaction Dynamics of Halorhodopsin : Halide Dependence and Isomerization Dynamics(Photobiology- vision and photoreception,Poster Presentations)

2007 ◽  
Vol 47 (supplement) ◽  
pp. S259
Author(s):  
Takumi Nakamura ◽  
Satoshi Takeuchi ◽  
Mikihiro Shibata ◽  
Makoto Demura ◽  
Hideki Kandori ◽  
...  
Keyword(s):  
Reaction Dynamics ◽  
Primary Reaction ◽  
Pump Probe ◽  
Poster Presentations

Reaction Dynamics in Femtosecond and Microsecond Time Windows: Ammonia Clusters as a Paradigm

1996 ◽  
Author(s):  
S. Wei ◽  
A. W. , Jr Castleman
Keyword(s):  
Mass Spectrometry ◽  
Energy Transfer ◽  
Real Time ◽  
Gas Phase ◽  
Reaction Dynamics ◽  
Research Field ◽  
Pump Probe ◽  
Time Domains ◽  
Zero Kinetic Energy ◽  
Cluster Reaction

The last decade has seen tremendous growth in the study of gas phase clusters. Some areas of cluster research which have received considerable attention in this regard include solvation (Lee et al. 1980), (Armirav et al. 1982), and reactivity (Dantus et al. 1991; Khudkar and Zewail 1990; Rosker et al. 1988; Scherer et al. 1987). In particular, studies of the dynamics of formation and dissociation, and the changing properties of clusters at successively higher degrees of aggregation, enable an investigation of the basic mechanisms of nucleation and the continuous transformation of matter from the gas phase to the condensed phase to be probed at the molecular level (Castleman and Keesee 1986a, 1988). In this context, the progressive clustering of a molecule involves energy transfer and redistribution within the molecular system, with attendant processes of unimolecular dissociation taking place between growth steps (Kay and Castleman 1983). Related processes of energy transfer, proton transfer, and dissociation are also operative during the reorientation of molecules about ions produced during the primary ionization event required in detecting clusters via mass spectrometry (Castleman and Keesee 1986b), providing further motivation for studies of the reaction dynamics of clusters (Begemann et al. 1986; Boesl et al 1992; Castleman and Keesee 1987; Echt et al. 1985; Levine and Bernstein 1987; Lifshitz et al. 1990; Lifshitz and Louage 1989, 1990; Märk 1987; Märk and Castleman 1984, 1986; Morgan and Castleman 1989; Stace and Moore 1983; Wei et al. 1990a,b). The real-time probing of cluster reaction dynamics is a facilitating research field through femtosecond pump-probe techniques pioneered by Zewail and coworkers (Dantus et al. 1991; Khundkar and Zewail 1990; Rosker et al. 1988; Scherer et al. 1987). Some real-time investigations have been performed on metal, van der Waals, and hydrogen-bonded clusters by employing these pump-probe spectroscopic techniques. For example, the photoionization and fragmentation of sodium clusters have been investigated by ion mass spectrometry and zero kinetic energy photoelectron spectroscopy in both picosecond (Schreiber et al. 1992) and femtosecond (Baumert et al. 1992, 1993; Bühler et al. 1992) time domains. Studies have also been made to elucidate the effect of solvation on intracluster reactions.

Primary Reaction Dynamics of Proteorhodopsin Mutant D97N Observed by Femtosecond Infrared and Visible Spectroscopy

2009 ◽  
Vol 85 (2) ◽  
pp. 540-546 ◽  
Author(s):  
Mirka-Kristin Verhoefen ◽  
Karsten Neumann ◽  
Ingrid Weber ◽  
Clemens Glaubitz ◽  
Josef Wachtveitl
Keyword(s):  
Reaction Dynamics ◽  
Primary Reaction ◽  
Visible Spectroscopy

scholarly journals Pump-Probe Time-Resolved Serial Femtosecond Crystallography at X-Ray Free Electron Lasers

Crystals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 628
Author(s):  
Suraj Pandey ◽  
Ishwor Poudyal ◽  
Tek Narsingh Malla
Keyword(s):  
Free Electron ◽  
Reaction Dynamics ◽  
Reaction Coordinate ◽  
Biological Macromolecules ◽  
Free Electron Lasers ◽  
Time Resolved ◽  
Pump Probe ◽  
X Ray ◽  
Recent Developments ◽  
Serial Femtosecond Crystallography

With time-resolved crystallography (TRX), it is possible to follow the reaction dynamics in biological macromolecules by investigating the structure of transient states along the reaction coordinate. X-ray free electron lasers (XFELs) have enabled TRX experiments on previously uncharted femtosecond timescales. Here, we review the recent developments, opportunities, and challenges of pump-probe TRX at XFELs.

Primary reaction dynamics of halorhodopsin, observed by sub-picosecond IR – vibrational spectroscopy

2006 ◽  
Vol 323 (1) ◽  
pp. 109-116 ◽  
Author(s):  
Frank Peters ◽  
Johannes Herbst ◽  
Jörg Tittor ◽  
Dieter Oesterhelt ◽  
Rolf Diller
Keyword(s):  
Vibrational Spectroscopy ◽  
Reaction Dynamics ◽  
Primary Reaction

The primary photolysis dynamics of oxalate in aqueous solution: decarboxylation

2021 ◽  
Author(s):  
Jan ThOgersen ◽  
Tobias Weidner ◽  
Frank Jensen
Keyword(s):  
Aqueous Solution ◽  
Reaction Dynamics ◽  
Primary Reaction

We study the primary reaction dynamics of aqueous oxalate following photo-excitation of the nO -> πCO* transition at λ = 200 nm. After the excitation, part of the oxalate molecules...

scholarly journals Tracking reaction dynamics in solution by pump–probe X-ray absorption spectroscopy and X-ray liquidography (solution scattering)

2016 ◽  
Vol 52 (19) ◽  
pp. 3734-3749 ◽  
Author(s):  
Jeongho Kim ◽  
Kyung Hwan Kim ◽  
Key Young Oang ◽  
Jae Hyuk Lee ◽  
Kiryong Hong ◽  
...  
Keyword(s):  
Real Time ◽  
Absorption Spectroscopy ◽  
Reaction Dynamics ◽  
Solution Phase ◽  
Pump Probe ◽  
X Ray ◽  
Electronic Dynamics ◽  
Photoinduced Reactions ◽  
X Ray Absorption

TRXL and TRXAS are powerful techniques for real-time probing of structural and electronic dynamics of photoinduced reactions in solution phase.

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