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Predesigned Cluster-Based Spacers for Versatile Luminescent Metallacages
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DOI：10.1021/jacs.3c01299.png)
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Abstract
En 中文
Luminescent metal-organic cages are of great interestincontemporary research; however, their designed synthesis remains challenging.Here, we created metal-cluster-derived spacers, where emissive C (3)-symmetric Cu-4 clusters have threearms modified by benzene alkynyl ligands, which are terminally functionalizedby extensile -COOH and 15-crown-5-ether groups with directionalcoordination ability. Through vertex orientation, -COOH-functionalizedcluster-based spacers coassembled with paddle-wheel Cu(I)( x )Zn(II)(2-x )(COO)(3) nodes in 3+3 mode, generating an emissive cubic cage, whichsubsequently gave another distorted cubic cage by synthetic modificationon the nodes. Through face orientation, 15-crown-5-ether-containingcluster-based spacers capturing K+ ions in 3+2 mode producedan octahedral cage whose empty phase showed dual emission peaks, leadingto diverse stimuli-responsive photoluminescence. This work providesnew design and synthesis strategies for the integration of nodes andspacers based on metal clusters for cage materials as well as prototypesof luminescent metal-cluster cages for important sensing applications.
Keywords:
METAL
PHOSPHORESCENCE
NANOCLUSTERS
CAGES
Journal
IF:
15.6
Papers:
20.0W
Citations:
60.2W