Elucidation of reaction mechanism of site-specific chemical bond scission on self-assembled monolayers as a reaction platform

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As one of dreams of chemists, we have studied site-selective chemical bond scission by core electron excitation, and found that the selectivity of this reaction is much improved when the reaction takes place on the self-assembled monolayer(SAM) surface. The main purpose of this study is to answer the question why chemical bond scission can be controlled well on SAM surface. From systematic studies of the relevance of the selectivity of chemical bond scission and the kind and length of the main chain of SAM, it was found that the selectivity is much influenced by the lifetime of the reaction precursor. The reaction probability decreases with decreasing the lifetime by shortening the main chain of SAM, but the selectivity increases.