Molecular Conformation and Organic Photochemistry

Time-resolved Photoionization Studies
2012
ISBN: 978-3-642-29380-1
Verlag: Springer

Buch, Englisch, 124 Seiten, Format (B × H): 160 mm x 241 mm, Gewicht: 383 g

Reihe: Springer Theses

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.

Zielgruppe

Research

Autoren/Hrsg.

Brogaard, Rasmus Y.

Fachgebiete

• Naturwissenschaften Chemie Analytische Chemie
• Naturwissenschaften Chemie Physikalische Chemie Nuklearchemie, Photochemie, Strahlenchemie

Inhaltsverzeichnis

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.