College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University , Hangzhou 310036, P. R. China.
J Am Chem Soc. 2014 Oct 29;136(43):15126-9. doi: 10.1021/ja507531b. Epub 2014 Oct 15.
We describe the fabrication of a suite of flexible porphyrin cages and nanorings from a simple tetraalkene-derived zinc porphyrin monomer via a highly efficient template-directed strategy. The zinc porphyrin monomers were preorganized together by coordination with N atoms of multidentate ligands. Subsequent one-step olefin metathesis furnished a bisporphyrin cage, a triporphyrin nanoring, and a hexaporphyrin nanoring. In the case of the hexaporphyrin nanoring, 24 terminal olefins from six porphyrin monomers reacted with each other to form 12 new double bonds, delivering the final product. The triporphyrin and hexaporphyrin nanorings were further employed as hosts to encapsulate C60 and C70.
我们通过一种高效的模板导向策略，从一种简单的四烯基衍生的锌卟啉单体制备了一系列柔性卟啉笼和纳米环。锌卟啉单体通过与多齿配体的 N 原子配位预先组织在一起。随后的一步烯烃复分解反应提供了双卟啉笼、三卟啉纳米环和六卟啉纳米环。在六卟啉纳米环的情况下，六个卟啉单体的 24 个末端烯烃相互反应形成 12 个新的双键，得到最终产物。三卟啉和六卟啉纳米环进一步被用作主体来封装 C60 和 C70。
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