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

作为化学家的梦想之一，我们研究了核电子激发的位点选择性化学键断裂，发现当反应发生在自组装单层（SAM）表面时，该反应的选择性大大提高。本研究的主要目的是回答为什么化学键断裂可以很好地控制在SAM表面的问题。系统地研究了键断裂的选择性与SAM主链的种类和长度之间的关系，发现反应前驱体的寿命对键断裂的选择性有很大影响。缩短SAM主链，反应概率随寿命的减小而减小，但选择性增加。

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.