Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/139485
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Type: | Journal article |
Title: | Stoichiometric Control of Guest Recognition of Self-Assembled Palladium(II)-Based Supramolecular Architectures |
Author: | Algar, J.L. Phillips, J.E. Evans, J.D. Preston, D. |
Citation: | Chemistry: An Asian Journal, 2023; 18(20):e202300673-1-e202300673-7 |
Publisher: | Wiley |
Issue Date: | 2023 |
ISSN: | 1861-471X 1861-471X |
Statement of Responsibility: | Jess L. Algar, James E. Phillips, Jack D. Evans, and Dan Preston |
Abstract: | We report flexible [Pd(L)2 ]2+ complexes where there is self-recognition, driven by π-π interactions between electron-rich aromatic arms and the cationic regions they are tethered to. This self-recognition hampers the association of these molecules with aromatic molecular targets in solution. In one case, this complex can be reversibly converted to an 'open' [Pd2 (L)2 ]4+ macrocycle through introduction of more metal ion. This is accomplished by the ligand having two bidentate binding sites: a 2-pyridyl-1,2,3-triazole site, and a bis-1,2,3-triazole site. Due to favourable hydrogen bonding, the 2-pyridyl-1,2,3-triazole units reliably coordinate in the [Pd(L)2 ]2+ complex to control speciation: a second equivalent of Pd(II) is required to enforce coordination to bis-triazole sites and form the macrocycle. The macrocycle interacts with a molecular substrate with higher affinity. In this fashion we are able to use stoichiometry to reversibly switch between two different species and regulate guest binding. |
Keywords: | self-assembly metallo-supramolecular palladium(II) host-guest chemistry structural transformation |
Description: | Version of record online: September 11, 2023 |
Rights: | © 2023 The Authors. Chemistry - An Asian Journal published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution Non-Commercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. |
DOI: | 10.1002/asia.202300673 |
Grant ID: | http://purl.org/au-research/grants/arc/DE200100421 http://purl.org/au-research/grants/arc/DE220100163 |
Published version: | http://dx.doi.org/10.1002/asia.202300673 |
Appears in Collections: | Chemistry publications |
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hdl_139485.pdf | Published version | 1.6 MB | Adobe PDF | View/Open |
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