An M₂L₄ Molecular Capsule with a Redox Switchable Polyradical Shell

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• 作者：Dr. Kohei Yazaki ; Shogo Noda ; Dr. Yuya Tanaka ; Dr. Yoshihisa Sei ; Prof. Dr. Munetaka Akita and Dr. Michito Yoshizawa
• 刊名：Angewandte Chemie
• 出版年：2016
• 出版时间：November 21, 2016
• 年：2016
• 卷：128
• 期：48
• 页码：15255-15258
• 全文大小：3107K
• ISSN：1521-3757

文摘

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 M₂L₄ molecular 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.