Photocatalytic conversion based on a programmed electron transporting

以钌卟啉为核心的苯基甲基树状大分子可以区分各种客体分子的形状。利用树突基纳米空间研究了形状依赖性催化转化。例如，测定了各种烯烃环氧化反应的TOF值催化活性。本文采用3种不同结构的甲氧基苯乙烯衍生物（o-、m-或p-）异构体进行比较。因此，树状聚合物催化剂相对地选择了元取代底物，从而得到相应的m取代环氧化物作为产物。同样，苯乙烯衍生物也被证实具有类似的选择性。值得注意的是，实验结果与基于分子结构模拟的预期相吻合。

Phenylazomethine dendrimers with a ruthenium porphyrin core can discriminate the shape of various guest molecules. Shape dependent catalytic conversion was studied by using this dendrimer-based nanospace. For example, the catalytic activities as TOF value for epoxidation reactions of various olefins were determined. Herein, we employed3 different structural isomers of methoxystyrene derivatives (o-, m- or p-) for the comparison. As the result, the meta-substituted substrates are relatively selected by the dendrimer catalyst, affording the corresponding m-substituted epoxide as the product. Similarly, phenylstyrene derivatives were also confirmed to exhibit similar selectivity. It is noteworthy that the experimental results are in good agreement with the expectation based on a molecular structural simulation.