Molecular Conformation and Organic Photochemistry [electronic resource] : Time-resolved Photoionization Studies / by Rasmus Y. Brogaard.
Tipo de material: TextoSeries Springer Theses, Recognizing Outstanding Ph.D. Research | Springer Theses, Recognizing Outstanding Ph.D. ResearchEditor: Berlin, Heidelberg : Springer Berlin Heidelberg : Imprint: Springer, 2012Descripción: XVI, 124 p. online resourceTipo de contenido:- text
- computer
- online resource
- 9783642293818
- SpringerLink (Online service)
- 543.2-543.8 23
- QD95-96
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 Paternș-Bȭchi reaction -- Probing structural dynamics by interaction between chromophores.
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.
ZDB-2-CMS
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