Molecular Conformation and Organic Photochemistry

Time-resolved Photoionization Studies

• Author(s): Rasmus Y. Brogaard,
• Publisher: Springer Science & Business Media
• Pages: 124
• ISBN_10: 3642293816
  ISBN_13: 9783642293818
  
• Language: en
• Categories: Science / Spectroscopy & Spectrum Analysis , Science / Physics / Atomic & Molecular , Science / Chemistry / Physical & Theoretical , Science / Chemistry / Analytic , Science / Life Sciences / Biophysics , Science / Physics / Nuclear ,

Description:... Rasmus Brogaard's thesis digs into the fundamental issue of how the shape of a molecule relates to its photochemical reactivity. This relation is drastically different from that of ground-state chemistry, since lifetimes of excited states are often comparable to or even shorter than the time scales of conformational changes. Combining theoretical and experimental efforts in femto-second time-resolved photoionization Rasmus Brogaard finds that a requirement for an efficient photochemical reaction is the prearrangement of the constituents in a reactive conformation.
Furthermore, he is able to show that by exploiting a strong ionic interaction between two chromophores, a coherent molecular motion can be induced and probed in real-time. This way of using bichromophoric interactions provides a promising strategy for future research on conformational dynamics.