Molecular Conformation and Organic Photochemistry
Time-resolved Photoionization Studies
Seiten
2012
|
2012
Springer Berlin (Verlag)
978-3-642-29380-1 (ISBN)
Springer Berlin (Verlag)
978-3-642-29380-1 (ISBN)
This outstanding thesis charts the links between a molecule's shape and its photochemical reactivity, which has highly truncated excited states radically different to those in ground-state chemistry. Its novel use of bichromophoric interactions is promising.
Rasmus Brogaard's thesis digs into the fundamental issue of how the shape of a molecules 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.
Furhtermore, 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.
Rasmus Brogaard's thesis digs into the fundamental issue of how the shape of a molecules 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.
Furhtermore, 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.
Aspects and investigation of photochemical dynamics.- A time-resolved probing method: photoionization.- Simulation of time-resolved photoionization signals.- Simulation: the Norrish type-I reaction in acetone.- Experimental setups.- Paracyclophanes I: [2+2]cycloaddition of ethylenes.- Paracyclophanes II: The Paternò-Büchi reaction.- Probing structural dynamics by interaction between chromophores.
| Erscheint lt. Verlag | 18.5.2012 |
|---|---|
| Reihe/Serie | Springer Theses |
| Zusatzinfo | XVI, 124 p. |
| Verlagsort | Berlin |
| Sprache | englisch |
| Maße | 155 x 235 mm |
| Gewicht | 354 g |
| Themenwelt | Naturwissenschaften ► Chemie ► Analytische Chemie |
| Naturwissenschaften ► Chemie ► Physikalische Chemie | |
| Naturwissenschaften ► Physik / Astronomie ► Atom- / Kern- / Molekularphysik | |
| Schlagworte | [2+2]Cycloaddition • Breaking and Formation of Chemical Bonds • Conformational Changes and Reactivity • Excited State Reactivity • Femto-second Time-Resolved Photoionization • Interaction Between Chromophores • Molecular Conformation and Organic Photochemistry • Paracyclophanes • Paternò-Büchi Reaction • Photochemie • Ultrafast Chemical Dynamics |
| ISBN-10 | 3-642-29380-8 / 3642293808 |
| ISBN-13 | 978-3-642-29380-1 / 9783642293801 |
| Zustand | Neuware |
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