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Article: Dinuclear coumarin-containing alkynylplatinum(ii) terpyridine complexes with supramolecular assembly-assisted photodimerization

TitleDinuclear coumarin-containing alkynylplatinum(ii) terpyridine complexes with supramolecular assembly-assisted photodimerization
Authors
Issue Date7-Mar-2023
PublisherRoyal Society of Chemistry
Citation
Materials Chemistry Frontiers, 2023, v. 7, n. 7, p. 1446-1452 How to Cite?
Abstract

A series of dinuclear coumarin-containing alkynylplatinum(ii) terpyridine complexes were shown to feature solvent-induced self-assembly behaviors via Pt⋯Pt, π-π stacking, and hydrophobic interactions, displaying drastic color changes from yellow to orange, then to red in solution with the new appearance of a metal-metal-to-ligand charge transfer (MMLCT) absorption band upon increasing the water content in their dimethyl sulfoxide (DMSO) solutions. Photodimerization of the coumarin moieties was found to occur only in the aggregated states with the presence of non-covalent interactions, assisted by the directional Pt⋯Pt interaction, which preorganized the C = C bond of the photo-responsive coumarin moieties in close proximity to each other, enabling topochemical photodimerization upon UV excitation. The aggregation-assisted photodimerization of this series of alkynylplatinum(ii) terpyridine complexes have been probed by UV-vis absorption spectral changes, 1H NMR spectroscopy, high-resolution electrospray ionization (ESI)-mass spectrometry and transmission electron microscopy (TEM), demonstrating the role played by supramolecular assembly of the Pt(ii) complexes in switching on the photodimerization reaction.


Persistent Identifierhttp://hdl.handle.net/10722/331574
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorFang, Shishi-
dc.contributor.authorChan, Michael Ho Yeung-
dc.contributor.authorYam Vivian Wing Wah-
dc.date.accessioned2023-09-21T06:57:02Z-
dc.date.available2023-09-21T06:57:02Z-
dc.date.issued2023-03-07-
dc.identifier.citationMaterials Chemistry Frontiers, 2023, v. 7, n. 7, p. 1446-1452-
dc.identifier.urihttp://hdl.handle.net/10722/331574-
dc.description.abstract<p> A series of dinuclear coumarin-containing alkynylplatinum(ii) terpyridine complexes were shown to feature solvent-induced self-assembly behaviors via Pt⋯Pt, π-π stacking, and hydrophobic interactions, displaying drastic color changes from yellow to orange, then to red in solution with the new appearance of a metal-metal-to-ligand charge transfer (MMLCT) absorption band upon increasing the water content in their dimethyl sulfoxide (DMSO) solutions. Photodimerization of the coumarin moieties was found to occur only in the aggregated states with the presence of non-covalent interactions, assisted by the directional Pt⋯Pt interaction, which preorganized the C = C bond of the photo-responsive coumarin moieties in close proximity to each other, enabling topochemical photodimerization upon UV excitation. The aggregation-assisted photodimerization of this series of alkynylplatinum(ii) terpyridine complexes have been probed by UV-vis absorption spectral changes, <sup>1</sup>H NMR spectroscopy, high-resolution electrospray ionization (ESI)-mass spectrometry and transmission electron microscopy (TEM), demonstrating the role played by supramolecular assembly of the Pt(ii) complexes in switching on the photodimerization reaction. <br></p>-
dc.languageeng-
dc.publisherRoyal Society of Chemistry-
dc.relation.ispartofMaterials Chemistry Frontiers-
dc.titleDinuclear coumarin-containing alkynylplatinum(ii) terpyridine complexes with supramolecular assembly-assisted photodimerization-
dc.typeArticle-
dc.identifier.doi10.1039/D2QM01133F-
dc.identifier.scopuseid_2-s2.0-85149837012-
dc.identifier.volume7-
dc.identifier.issue7-
dc.identifier.spage1446-
dc.identifier.epage1452-
dc.identifier.eissn2052-1537-
dc.identifier.isiWOS:000944152200001-
dc.identifier.issnl2052-1537-

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