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“Gating” the Pores of a Metal Oxide Based Capsule: After Initial Cation Uptake Subsequent Cations Are Found Hydrated and Supramolecularly Fixed above the Pores
Author(s) -
Müller Achim,
Zhou Yunshan,
Bögge Hartmut,
Schmidtmann Marc,
Mitra Tamoghna,
Haupt Erhard T. K.,
Berkle Alois
Publication year - 2006
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.200501994
Subject(s) - gating , capsule , chemistry , ion , oxide , metal , surface charge , metal ions in aqueous solution , chemical engineering , biophysics , organic chemistry , botany , biology , engineering
Artificial cells : A polyoxomolybdate capsule, in which the cavity is linked to surface pores by channels, can take up Pr 3+ ions. Each uptake reduces the negative charge on the capsule so that eventually no more Pr 3+ ions enter the capsule, instead they remain bound on the surface (see structure: external hydrated Pr 3+ green polyhedra, encapsulated Pr 3+ light green, Mo blue, O red, SO 4 2− yellow). This process models voltage gating of the ion channels of cells.