| Date | Highlight | 
Links to more Information |
| | |
| 8 July 2002 | Headline
news:
Scientists at the Max Born Institute demonstrate the importance
of non-totally symmetric vibrational modes for intramolecular vibrational energy
redistribution (IVR) processes that take place after relaxation from photochemically
excited state to the ground state (internal conversion, IC) through conical intersections.
| 
Link to original paper |
| | One
sentence summary:
Picosecond anti-Stokes resonance Raman spectroscopy
of para-nitroaniline reveals initial excitation of out-of-plane vibrations, which
thus represent the main accepting modes, whereas excitation of totally-symmetric
vibrations by IVR occurs only in subsequent step - a new model, which contrasts
earlier treatments of internal conversion. |
More details on page of subproject
3 |
| |
Wolfgang Werncke and Valeri Kozich contemplating the picosecond Raman set-up. | 
Contact: Wolfgang Werncke
Contact: Thomas Elsaesser |
| | External
funding by:
German Science Foundation: DFG DFG WE 1489/5 | |
| | |
| 24 June 2002 | Headline
news:
Erik T. J. Nibbering reported the first femtosecond infrared experiment
on excited state intramolecular hydrogen transfer (ESIHT) at the Faraday Discussion
meeting 122: Time-Resolved Chemistry: From Structure to Function. | 
Link to original paper |
| | One
sentence summary:
Femtosecond infrared experiments on infrared-active
fingerprint vibrations of 2-(2'-hydroxyphenyl)benzothiazole (HBT)excited state
reveal an intramolecular hydrogen transfer (ESIHT) time scale of 30-50 fs, followed
by intramolecular vibrational redistribution and cooling on picosecond times,
without being the direct energy accepting modes during the reaction. |
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") |
Contact: Erik T. J. Nibbering
Contact: Thomas Elsaesser |
| | |
| 14 March 2002 | Headline
news:
Scientists at the Max Born Institut for Nonlinear Optics and Short
Pulse Spectroscopy report for the first time an infrared photon echo peak shift
study of liquid water, giving insight into the time scales of fluctuations of
the hydrogen bond network in water. | 
Link to original paper |
| | One
sentence summary:
A photon echo peak shift study of the O-H stretching
band of HOD in deuterated water shows that spectral diffusion occurs on many time
scales, indicating that the memory of local structure of the hydrogen bond network
in liquid water remains (partially) conserved well up to several picoseconds. |
More details on page of subproject
1 |
| | 
Uni Zuerich and MBI-team members Peter Hamm, Erik T. J. Nibbering, Julian Edler
and Jens Stenger in Vancouver, just before the Ultrafast Phenomena XIII conference
(May 2002), at which the work was presented to an international audience.
|
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 |
| |
Dr. Nibbering
