An M2L4 Molecular Capsule with a Redox Switchable Polyradical Shell
An M2L4 Molecular Capsule with a Redox Switchable Polyradical Shell
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具有氧化还原可切换多自由基壳的 M2L4 分子胶囊
DOI：
10.1002/anie.201608350
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Michito Yoshizawa
中科院分区：
文献类型：
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作者：
Kohei Yazaki;Shogo Noda;Yuya Tanaka;Yoshihisa Sei;Munetaka Akita;Michito Yoshizawa
制备具有多自由基框架的分子纳米结构仍然是一个重大的挑战，因为有限的合成可及性，这是完全不同的中性和离子的。在这里，我们报告了一种新的M2L4分子胶囊的定量形成从金属离子和二氢吩嗪基配体。该胶囊具有球形纳米腔（ca.直径为1 nm），由8个氧化还原活性二氢吩嗪板包围。胶囊的电化学氧化导致在壳框架上产生多个自由基阳离子。此外，稳定的四（自由基阳离子）胶囊可以通过化学以及电化学氧化可逆地获得。
Preparation of molecular nanostructures with polyradical frameworks remains a significant challenge because of the limited synthetic accessibility which is entirely different from that of neutral and ionic ones. Herein we report the quantitative formation of a new M2L4molecular capsule from metal ions and dihydrophenazine‐based ligands. The capsule has a spherical nanocavity (ca. 1 nm in diameter) enclosed by eight redox‐active, dihydrophenazine panels. Electrochemical oxidation of the capsule leads to the generation of multiple radical cations on the shell framework. Moreover, a stable tetra(radical cation) capsule can be reversibly obtained by chemical as well as electrochemical oxidation.