Alkane oxidation via photochemical excitation of a self-assembled molecular cage.
Alkane oxidation via photochemical excitation of a self-assembled molecular cage.
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DOI：
10.1021/ja047612u
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发表时间：
2004-07
影响因子：
15
通讯作者：
M. Yoshizawa;Sachiko Miyagi;M. Kawano;K. Ishiguro;M. Fujita
中科院分区：
文献类型：
--
作者：
M. Yoshizawa;Sachiko Miyagi;M. Kawano;K. Ishiguro;M. Fujita
自组装的M6 L4型配位笼容纳光化学惰性烷烃客体（例如，金刚烷和环辛烷）导致笼内客体的区域选择性氧化。在厌氧条件下，客体氧化伴随着稳定的自由基形成，如ESR光谱（g = 2.002）和溶液颜色的变化（从无色到蓝色）所示。这些现象被证明是自组装分子系统的特征：从M6 L4 supersetGn组件中，没有一个组分（M、L或G）可以由于不寻常的氧化和/或自由基形成而被消除。
The photoexcitation of a self-assembled M6L4-type coordination cage accommodating photochemically inert alkane guests (e.g., adamantane and cyclooctane) led to the regioselective oxidation of the guest within the cage. Under anaerobic conditions, the guest oxidation was accompanied by the stable radical formation as indicated by ESR spectrometry (g = 2.002) and change in solution color (from colorless to blue). These phenomena were shown to be characteristic of the self-assembled molecular systems: i.e., from the M6L4 supersetGn assembly, none of the components (M, L, or G) can be eliminated for the unusual oxidation and/or radical formation.