Fr. 134.00

Molecular Conformation and Organic Photochemistry - Time-resolved Photoionization Studies

English · Hardback

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Description

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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.
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.

List of contents

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.

Summary

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.

Product details

Authors Rasmus Y Brogaard, Rasmus Y. Brogaard
Publisher Springer, Berlin
 
Languages English
Product format Hardback
Released 01.06.2012
 
EAN 9783642293801
ISBN 978-3-642-29380-1
No. of pages 124
Weight 354 g
Illustrations XVI, 124 p.
Series Springer Theses
Springer Theses
Subject Natural sciences, medicine, IT, technology > Chemistry > Physical chemistry

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