Stoichiometric Control of Guest Recognition of Self-Assembled Palladium(II)-Based Supramolecular Architectures

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dc.contributor.authorAlgar, J.L.
dc.contributor.authorPhillips, J.E.
dc.contributor.authorEvans, J.D.
dc.contributor.authorPreston, D.
dc.date.issued2023
dc.descriptionVersion of record online: September 11, 2023
dc.description.abstractWe 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.
dc.description.statementofresponsibilityJess L. Algar, James E. Phillips, Jack D. Evans, and Dan Preston
dc.identifier.citationChemistry - An Asian Journal, 2023; 18(20):e202300673-1-e202300673-7
dc.identifier.doi10.1002/asia.202300673
dc.identifier.issn1861-471X
dc.identifier.issn1861-471X
dc.identifier.orcidEvans, J.D. [0000-0001-9521-2601]
dc.identifier.urihttps://hdl.handle.net/2440/139485
dc.language.isoen
dc.publisherWiley
dc.relation.granthttp://purl.org/au-research/grants/arc/DE200100421
dc.relation.granthttp://purl.org/au-research/grants/arc/DE220100163
dc.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.
dc.source.urihttps://doi.org/10.1002/asia.202300673
dc.subjectself-assembly
dc.subjectmetallo-supramolecular
dc.subjectpalladium(II)
dc.subjecthost-guest chemistry
dc.subjectstructural transformation
dc.titleStoichiometric Control of Guest Recognition of Self-Assembled Palladium(II)-Based Supramolecular Architectures
dc.typeJournal article
pubs.publication-statusPublished

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