Abstract
Using continuous variable synchrotron radiation, site selective core excitation can be achieved. The site-specificity of the consequent chemical reactions has been studied for adsorbates, thin films and molecules condensed onto a substrate. During the present research, a site-specific reaction was found in the case of photon stimulated ion desorption (PSID) of PMMA (polymethylmethacrylate) thin films. The PSID of condensed acetonitrile was also examined in order to elucidate the Auger process that follows resonant core excitation, and the ion desorption mechanism related to this Auger process. We discuss from the experimental results obtained so far, the possibility of controlling chemical bond scission through the use of site-specific photochemical surface reactions.
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