| Date | Highlight | 
Links to more Information |
| | |
| 28
November 2003 | Headline
news:
In the SFB450-B2 project run by the Elsaesser/Nibbering team (Max
Born Institut for Nonlinear Optics and Short Pulse Spectroscopy) first two colour
infrared pump-probe measurements reveal how vibrational modes mutually interact
in hydrogen bonds. | 
Link to original
paper
|
|
| One sentence summary:
Two colour infrared pump-probe measurements on acetic acid dimer show the importance
of anharmonic coupling between and the involvement of different vibrational modes
in this important model system for hydrogen bonding. |
More details on page of subproject
1 |
|
| 
Karsten Heyne analysing the two colour pump-probe data on acetic acid dimer. | 
Contact: Erik T. J. Nibbering
Contact: Thomas Elsaesser
|
| | External
funding by:
German Science Foundation: SFB450-B2 (Sonderforschungsbereich 450 "Analyse
und Steuerung ultraschneller photoinduzierter Reaktionen")
| 
Link to
SFB450 web-page |
| | |
| 7 November
2003 | Headline news:
In the SFB450-B2 project run by the Elsaesser/Nibbering team (Max Born Institut
for Nonlinear Optics and Short Pulse Spectroscopy) photon echo results have been
reported on hydrogen bond dynamics in acetic acid dimer, an important model system
for coupled hydrogen bonds in biomolecular structures. | 
Link to original
paper
|
|
| One sentence summary:
An infrared photon-echo study of the O-H stretching band of acetic acid dimer
reveals the dominant role of multi-level coherence interferences in the macroscopic
polarization decay. |
More details on page of subproject
1 |
|
| 
Nils Huse measuring the photon echo data on acetic acid dimer. |
Contact: Erik T. J. Nibbering
Contact: Thomas Elsaesser |
| | External
funding by:
German Science Foundation: SFB450-B2 (Sonderforschungsbereich 450 "Analyse
und Steuerung ultraschneller photoinduzierter Reaktionen")
|
Link to
SFB450 web-page |
| | |
| 18
July 2003 | Headline news:
Members of the Nibbering team (Max Born Institut for Nonlinear Optics and
Short Pulse Spectroscopy) in collaboration with the Pines team (Ben-Gurion University
of the Negev) observe bimodal proton transfer dynamics in acid-base neutralization
reactions in water. | 
Pressemitteilung
"Ab jetzt bist
du sauer!"
Säuren beim Reagieren zusehen
|
| | One
sentence summary:
Bimodal reaction dynamics, as observed in femtosecond
infrared measurements on proton transfer reactions in acid-base pairs in water,
demand refinement of the established Eigen-Weller mechanism. | 
Press Release
"From
now on you are sour"
Looking at reacting acids
|
| | 
Summary showing the essence of the work | 
Persbericht
"Vanaf
nu reageer je zuur!"
Kijken naar reagerende zuren
|
| | 
Link to original paper |
 Comunicato
stampa
"Da questo
momento siate acidi!"
Osservare il movimento dei protoni durante reazioni
chimiche |
|
|
Link to Perspective by
Mark A. Johnson |
Two fast studies
of liquid water |
|
| 
The team members (left to right): Ben-Zion (Oleg) Magnes, Ehud Pines, Erik
T. J. Nibbering and Matteo Rini |
 Pressemitteilung
|
|
| |
More details on page of subproject
2 |
|
| External funding
by:
German Science
Foundation: DFG NI 492/2-2 (Schwerpunktprogram "Femtosekunden-Spektroskopie
elementarer Anregungen in Atomen, Molekülen und Clustern")
German-Israeli Foundation
for Scientific Research and Development: GIF 722/01
LIMANS Cluster of Large Scale Facilities: MBI000228 |
Contact: Erik T. J. Nibbering
|
| | |
10
July 2003
| Headline
news:
"Carl-Ramsauer Preis" für Dr. Jens Stenger Physiker des Max-Born-Instituts
erhält Preis für die Untersuchung von Wasserstoffbrücken. |
Pressemitteilung
Was die lebendige
Welt im Innersten zusammenhält |
| | 
Dr. Jens Stenger in full action at the Carl Ramsauer Preisverleihung.
The Carl Ramsauer prizewinners in one row.
Official flyer announcing 2003 Carl Ramsauer prize winners
|
Carl
Ramsauer prize winners on the official site of the Physikalische
Gesellschaft zu Berlin |
| | |
| 12 March 2003 |
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) competing ultrafast relaxation channels are observed in
optically induced chemical reaction dynamics of the photochromic switch spiropyran.
|
Link to original paper |
| | One
sentence summary:
Ultrafast internal conversion to the spiropyran ground
state is found to be an efficient relaxation channel competing with the photochemically
induced ring-opening reaction to merocyanine. |
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")
| |
| | |
| 28 February 2003 | Headline
news:
In the SFB450-B2 project run by the Elsaesser/Nibbering team (Max
Born Institut for Nonlinear Optics and Short Pulse Spectroscopy) new results have
been reported on hydrogen bond dynamics in acetic acid dimer, an important model
system for coupled hydrogen bonds in biomolecular structures. |
Link to original paper |
| | One
sentence summary:
The cyclic dimer of deuterated acetic acid, an important
model system for hydrogen-bonded units of biomolecules, shows, upon excitation
of the O–D stretching mode, coherent nuclear motions along several anharmonically
coupled intermolecular low-frequency modes of the dimer. |
More details on page of subproject
1 |
| |
Karsten Heyne fitting the acetic acid dimer pump-probe data. |
Contact: Erik T. J. Nibbering
Contact: Thomas Elsaesser |
| | External
funding by:
German Science Foundation: SFB450-B2 (Sonderforschungsbereich 450 "Analyse
und Steuerung ultraschneller photoinduzierter Reaktionen")
|
Link to
SFB450 web-page |
| | |
| 15 January 2003 | Headline
news:
A new procedure to simulate multidimensional nonlinear vibrational
spectra based on electronic structure ab initio calculations has been developed
by Jens Dreyer in collaboration with the group of Shaul Mukamel (University of
Rochester / UC Irvine). | 
Link to original paper |
| | One
sentence summary:
Analysis of a complete set of simulated one- and two-color
multidimensional infrared spectra, which provide new insight into structural and
dynamical properties of molecules and chemical reactions with ultrafast time resolution,
shows distinct and direct signatures of anharmonicities, mode couplings, Fermi
resonances, and relative transition dipole moments. |
More details on page of subproject
5 |
| | |
Contact: Jens Dreyer |
| |