Ebook: Molecular Conformation and Organic Photochemistry: Time-resolved Photoionization Studies

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.

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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.
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.

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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.
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.
Content:
Front Matter....Pages i-xvi
Front Matter....Pages 1-1
Introduction....Pages 3-5
Aspects and Investigation of Photochemical Dynamics....Pages 7-21
A Time-Resolved Probing Method: Photoionization....Pages 23-33
Front Matter....Pages 35-35
Simulation of Time-Resolved Photoionization Signals....Pages 37-51
Simulation: The Norrish Type-I Reaction in Acetone....Pages 53-62
Front Matter....Pages 63-63
Experimental Setups ....Pages 65-73
Paracyclophanes I: [2 $+$ 2]cycloaddition of Ethylenes ....Pages 75-88
Paracyclophanes II: The Patern?-B?chi Reaction ....Pages 89-102
Probing Structural Dynamics by Interaction Between Chromophores ....Pages 103-114
Front Matter....Pages 115-115
Summarizing Discussion....Pages 117-120
Back Matter....Pages 121-122

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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.
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.
Content:
Front Matter....Pages i-xvi
Front Matter....Pages 1-1
Introduction....Pages 3-5
Aspects and Investigation of Photochemical Dynamics....Pages 7-21
A Time-Resolved Probing Method: Photoionization....Pages 23-33
Front Matter....Pages 35-35
Simulation of Time-Resolved Photoionization Signals....Pages 37-51
Simulation: The Norrish Type-I Reaction in Acetone....Pages 53-62
Front Matter....Pages 63-63
Experimental Setups ....Pages 65-73
Paracyclophanes I: [2 $+$ 2]cycloaddition of Ethylenes ....Pages 75-88
Paracyclophanes II: The Patern?-B?chi Reaction ....Pages 89-102
Probing Structural Dynamics by Interaction Between Chromophores ....Pages 103-114
Front Matter....Pages 115-115
Summarizing Discussion....Pages 117-120
Back Matter....Pages 121-122
....