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Updated: Jun 27, 2025
Design, Synthesis, and Photochemical Properties of Clickable Caged Compounds
Published on: October 15, 2019
A Cages-on-Cluster Structure Constructed by Post-Clustering Covalent Modifications and Guest-Enabled
Yang Yang1,2, Shan Guo1, Qian Zhang1
1Department of Chemistry, College of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
Abstract:
A gold(I)-cluster-based twin-cage has been constructed by post-clustering covalent modification of a hexa-aldehyde cluster precursor with triaminotriethylamines. The cages-on-cluster structure has double cavities and four binding sites, which show site-discriminative binding for silver(I) and copper(I) guests. The guests in the tripodal hats affect the luminescence of the cluster: the tetra-silver(I) host-guest complex is weakly red-emissive, while the bis-copper(I)-bis-silver(I) one is non-emissive but is a stimuli-responsive supramolecule. The copper(I) ion inside the tri-imine cavity is oxidation sensitive, which enables the release of the bright emissive precursor cluster triggered by H2O2 solution. The hybridization of a cluster with cavities to construct a cluster-based cage presents an innovative concept for functional cluster design, and the post-clustering covalent modification opens up new avenues for finely tuning the properties of clusters.
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