/en/research/projects/2-04/highlights/MolStructDynamics-2004.html
2-04 Molecular Vibrational and Reaction Dynamics in the Condensed Phase
Project coordinator(s): E. Nibbering
Recent Highlights

Ultrafast molecular structural dynamics in the condensed phase

Highlights of project 2-04 in 2004

DateHighlight  Links to more Information
  
22 July 2004

Headline news:
In a joint collaboration between the SFB450-B2 and SFB450-C1 projects run by the Elsaesser/Nibbering (Max Born Institut for Nonlinear Optics and Short Pulse Spectroscopy) and Manz/Kühn (Freie Universität Berlin) teams a combined experimental and theoretical study reveals how O-H stretching excitation in hydrogen bonds is redistributed .


Link to original paper

 

One sentence summary:
Two colour infrared pump-probe measurements and quantum chemical calculations on phthalic acid monomethylester demonstrate that the O-H stretching excitation follows a cascaded energy redistribution pathway along O-H bending and O-H out-of-plane deformation modes.

More details on page of subproject 1

 


Karsten Heyne analysing the two colour pump-probe data on phthalic acid monomethylester.


Contact: Erik T. J. Nibbering
Contact: Thomas Elsaesser
Contact: Oliver Kühn

 External funding by:


German Science Foundation: SFB450-B2 and C1 (Sonderforschungsbereich 450 "Analyse und Steuerung ultraschneller photoinduzierter Reaktionen")

Link to SFB450 web-page
  
2 June 2004

Headline news:
Erik T. J. Nibbering gives his opinion on the structure of water in an interview with Michael Fuhs for Deutschlandfunk
Link to transcribed interview
 

Forschung aktuell • Aus Naturwissenschaft und Technik
Montag bis Freitag • 16:35
2.6.2004

Ketten und Ringe
Neue Erkenntnisse über die Struktur von flüssigem Wasser
Von Michael Fuhs


Link to sound file of interview
  
31 March 2004 Headline news:
In a joint project between the Nibbering team (Max Born Institut for Nonlinear Optics and Short Pulse Spectroscopy) and the Fidder team (Uppsala Universitet) results on the ultrafast internal conversion (IC) dynamics of a photochromic switch have lead to a refinement of the well-established "energy gap law" for IC, to a connection of two theoretical explanations for IC, currently believed to be unrelated and to a prediction that regulation of (photo-)chemical yields at the expense of photophysical decay can be accomplished by active control of molecular conformations.

Link to original paper
 One sentence summary:
Large conformational changes upon electronic excitation explain recent observations of ultrafast internal conversion while showing behaviour different to that predicted by the well-established "energy gap law". 		More details on page of subproject 4
 
Contact: Erik T. J. Nibbering
 


Matteo Rini, Henk Fidder together with Omar F. Mohammed in the femtosecond application laboratory.

 
 External funding by:


LIMANS Cluster of Large Scale Facilities: MBI000237


German Science Foundation: DFG NI 492/2-2 (Schwerpunktprogram "Femtosekunden-Spektroskopie elementarer Anregungen in Atomen, Molekülen und Clustern")
 
  
25 February 2004 Headline news:
In a joint project between researchers from the Max Born Institut for Nonlinear Optics and Short Pulse Spectroscopy, the University of Würzburg, and the University of Louisville the structure and dynamics of NO bound to myoglobin has been investigated with ultrafast infrared polarisation spectroscopy and density functional theory.
Link to original paper
 One sentence summary:
In a combined experimental and theoretical study of NO bound to the heme iron in myoglobin it is found that the diatomic ligand is severely tilted in the protein and that the Fe-NO moiety can sample a wide range of off-axis tilting and bending conformations. 		More details on page of subproject 4
 
Contact: Erik T. J. Nibbering
 


Matteo Rini and Tomasz Zemojtel in the femtosecond application laboratory.

 
 External funding by:


LIMANS Cluster of Large Scale Facilities: MBI000232
 
 
Dr. Nibbering
nibberin@mbi-berlin.de
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