Abstract
Although many impressive metallo-supramolecular architectures have been reported, they tend towards high symmetry structures and avoid extraneous functionality to ensure high fidelity in the self-assembly process. This minimalist approach, however, limits the range of accessible structures and thus their potential applications. Herein is described the synthesis of a family of ditopic ligands wherein the ligand scaffolds are both low symmetry and incorporate exohedral functional moieties. Key to this design is the use of CuI-catalysed azide-alkyne cycloaddition (CuAAC) chemistry, as the triazole is capable of acting as both a coordinating heterocycle and a tether between the ligand framework and functional unit simultaneously. A common precursor was used to generate ligands with various functionalities, allowing control of electronic properties whilst maintaining the core structure of the resultant cis-Pd2L4 nanocage assemblies. The isostructural nature of the scaffold frameworks enabled formation of combinatorial libraries from the self-assembly of ligand mixtures, generating a statistical mixture of multi-functional, low symmetry architectures.
Original language | English |
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Pages (from-to) | 4454-4460 |
Number of pages | 7 |
Journal | Chemistry - A European Journal |
Volume | 27 |
Issue number | 13 |
Early online date | 6 Jan 2021 |
DOIs | |
Publication status | Published - 1 Mar 2021 |
Bibliographical note
Publisher Copyright:© 2021 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH
Keywords
- asymmetrical
- cages
- combinatorial library
- metallo-supramolecular
- self-assembly
ASJC Scopus subject areas
- Catalysis
- Organic Chemistry