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Engineering Multifunctional Capsules through the Assembly of Metal–Phenolic Networks
Author(s) -
Guo Junling,
Ping Yuan,
Ejima Hirotaka,
Alt Karen,
Meissner Mirko,
Richardson Joseph J.,
Yan Yan,
Peter Karlheinz,
von Elverfeldt Dominik,
Hagemeyer Christoph E.,
Caruso Frank
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201311136
Subject(s) - metal , materials science , tannic acid , drug delivery , nanotechnology , thermal stability , ligand (biochemistry) , metal organic framework , combinatorial chemistry , chemistry , chemical engineering , organic chemistry , adsorption , metallurgy , biochemistry , receptor , engineering
Metal–organic coordination materials are of widespread interest because of the coupled benefits of inorganic and organic building blocks. These materials can be assembled into hollow capsules with a range of properties, which include selective permeability, enhanced mechanical/thermal stability, and stimuli‐responsiveness. Previous studies have primarily focused on the assembly aspects of metal‐coordination capsules; however, the engineering of metal‐specific functionality for capsule design has not been explored. A library of functional metal–phenolic network (MPN) capsules prepared from a phenolic ligand (tannic acid) and a range of metals is reported. The properties of the MPN capsules are determined by the coordinated metals, allowing for control over film thickness, disassembly characteristics, and fluorescence behavior. Furthermore, the functional properties of the MPN capsules were tailored for drug delivery, positron emission tomography (PET), magnetic resonance imaging (MRI), and catalysis. The ability to incorporate multiple metals into MPN capsules demonstrates that a diverse range of functional materials can be generated.