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This thesis work concerns the development and applications of ultrafast optical techniques and in particular photon echo in the UV range (< 300 nm). Development of these techniques in the UV range is important for studying molecular dynamics in solution, s ...
The three-component Povarov reaction of aldehydes, anilines, and benzyl N-vinylcarbamate in the presence of 0.1 equiv of chiral phosphoric acid afforded cis-2,4-disubstituted tetrahydroquinolines, e.g. I, in good yields and excellent enantiomeric excesses. ...
We report on time-resolved measurements of the first order spatial coherence in an exciton-polariton Bose-Einstein condensate. Long-range spatial coherence is found to set in right at the onset of stimulated scattering, on a picosecond time scale. The cohe ...
Nanoporous, p-type NiO films were sensitized with Coumarin 343 (C343), and the photoinduced electron transfer dynamics was studied in the presence of different concns. of electrolyte (I3-/I- in propylene carbonate). Electron transfer from the valence band ...
A review. The crucial steps of cellular photoperception are characterized and followed in real time by laser spectroscopy down to a few tens of femtoseconds. The photoactive proteins studied here are involved in major natural processes such as vision (bact ...
Biased Born-Oppenheimer molecular dynamics simulations are performed to compute redox potential and free energy curves for the redox half reaction Ag(+)-->Ag(2+)+e(-) in aqueous solution. The potential energy surfaces of reactant and product state are line ...
The propagation of high-power femtosecond light pulses in lithium niobate crystals (LiNbO3) is investigated experimentally and theoretically in collinear pump-probe transmission experiments. It is found within a wide intensity range that a strong decrease ...
Accurate detn. of the transient electronic structures, which drive photochem. reactions, is crucial in chem. and biol. The authors report the detection of transient chem. changes on the picosecond time scale by x-ray-absorption near-edge structure of photo ...
Excitation of the A(3ss) Rydberg state of NO trapped in an H2 crystal leads to the electronic bubble formation around the NO impurity, resulting in an increase of 0.9 .ANG. of the ground state cage radius. Its dynamics was followed in real-time by femtosec ...
Rotationally resolved spectra in the 5 nu (1) region of (CH3OH)-C-13 reveal strong vibrational splittings, which by analogy to (CH3OH)-C-12, we assign to a resonance between 5 nu (1) and 4 nu (1)+nu (2). Accordingly, the vibrational dynamics on a subpicose ...
