Selective Encapsulation and Sequential Release of Guests Within a Self‐Sorting Mixture of Three Tetrahedral Cages |
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Authors: | Dr Azucena Jiménez Dr Rana A Bilbeisi Dr Tanya K Ronson Dr Salvatore Zarra Craig Woodhead Dr Jonathan R Nitschke |
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Institution: | Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW (UK) http://www‐jrn.ch.cam.ac.uk/ |
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Abstract: | A mixture of two triamines, one diamine, 2‐formylpyridine and a ZnII salt was found to self‐sort, cleanly producing a mixture of three different tetrahedral cages. Each cage bound one of three guests selectively. These guests could be released in a specific sequence following the addition of 4‐methoxyaniline, which reacted with the cages, opening each in turn and releasing its guest. The system here described thus behaved in an organized way in three distinct contexts: cage formation, guest encapsulation, and guest release. Such behavior could be used in the context of a more complex system, where released guests serve as signals to other chemical actors. |
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Keywords: | anion binding metal– organic complexes self‐assembly self‐sorting supramolecular chemistry |
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