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Front Cover: A Closed Metallomolecular Cage that can Open its Aperture by Disulfide Exchange (Chem. Eur. J. 6/2019)
Author(s) -
Akine Shigehisa,
Miyashita Masato,
Nabeshima Tatsuya
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201806184
Subject(s) - cage , chemistry , front cover , disulfide bond , polymer chemistry , ion exchange , ion , crystallography , cover (algebra) , combinatorial chemistry , organic chemistry , biochemistry , mechanical engineering , engineering , mathematics , combinatorics
A reversible open/close function based on disulfide exchange was successfully incorporated in a metallomolecular cage that has a tris(saloph) organic framework and three cobalt(III) ions. To close the cage structure, bridging diamine ligands having a disulfide bond were introduced. These bridging ligands efficiently blocked the uptake of a guest, Cs + , but the presence of a thiolate anion significantly accelerated the guest uptake. Thus, the cage complex became open by the thiolate anion, because the cage closure becomes more dynamic due to the disulfide exchange. More information can be found in the Communication by S. Akine, T. Nabeshima, and M. Miyashita on page 1432.