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An M 2 L 4 Molecular Capsule with a Redox Switchable Polyradical Shell
Author(s) -
Yazaki Kohei,
Noda Shogo,
Tanaka Yuya,
Sei Yoshihisa,
Akita Munetaka,
Yoshizawa Michito
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201608350
Subject(s) - redox , electrochemistry , ionic bonding , capsule , chemistry , ion , shell (structure) , metal , nanostructure , metal ions in aqueous solution , materials science , inorganic chemistry , nanotechnology , electrode , organic chemistry , composite material , botany , biology
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 M 2 L 4 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.