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Rotaxane Pt(II)-Complexes: Mechanical Bonding for Chemically Robust Luminophores and Stimuli Responsive Behaviour

Zhang, Zhi-Hui; Tizzard, Graham J.; Williams, J.A. Gareth; Goldup, Stephen

Rotaxane Pt(II)-Complexes: Mechanical Bonding for Chemically Robust Luminophores and Stimuli Responsive Behaviour Thumbnail


Authors

Zhi-Hui Zhang

Graham J. Tizzard

Stephen Goldup



Abstract

We report an approach to rotaxanes in which the metal ion of a cyclometallated PtII luminophore is embedded in the space created by the mechanical bond. Our results show that the interlocked ligand environment stabilises a normally labile PtII–triazole bond against displacement by competing ligands and that the crowded environment of the mechanical bond retards oxidation of the PtII centre, without perturbing the photophysical properties of the complex. When an additional pyridyl binding site is included in the axle, the luminescence of the PtII centre is quenched, an effect that can be selectively reversed by the binding of AgI. Our results suggest that readily available interlocked metal-based phosphors can be designed to be stimuli responsive and have advantages as stabilised triplet harvesting dopants for device applications.

Citation

Zhang, Z., Tizzard, G. J., Williams, J. G., & Goldup, S. (2020). Rotaxane Pt(II)-Complexes: Mechanical Bonding for Chemically Robust Luminophores and Stimuli Responsive Behaviour. Chemical Science, 7(11), 1839-1847. https://doi.org/10.1039/c9sc05507j

Journal Article Type Article
Acceptance Date Jan 2, 2020
Online Publication Date Jan 2, 2020
Publication Date Feb 21, 2020
Deposit Date Jan 9, 2020
Publicly Available Date Jan 31, 2020
Journal Chemical Science
Print ISSN 2041-6520
Electronic ISSN 2041-6539
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 7
Issue 11
Pages 1839-1847
DOI https://doi.org/10.1039/c9sc05507j

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