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Quantification of energy transfer in bimetallic Pt(ii)–Ln(iii) complexes featuring an N^C^N-cyclometallating ligand

Etchells, Isaac M.; Pfrunder, Michael C.; Williams, J.A. Gareth; Moore, Evan G.

Quantification of energy transfer in bimetallic Pt(ii)–Ln(iii) complexes featuring an N^C^N-cyclometallating ligand Thumbnail


Authors

Isaac M. Etchells

Michael C. Pfrunder

Evan G. Moore



Abstract

Cyclometallated Pt(II) complexes with arylpolypyridyl ligands have impressive photophysical properties (high quantum yields, long lifetimes and tuneable emission) which can be readily tuned by modification of the organic ligand. Despite this, few examples of cyclometallated Pt(II) complexes as sensitisers for Ln(III) emission have been reported. Herein, we report the photophysical properties for a series of bimetallic complexes incorporating an N^C^N-coordinated Pt(II) bearing an alkynyl terpyridine as a metalloligand for a Ln(III) ion (where Ln = Nd, Gd, Er, Yb and Lu). Using a combination of steady state, time-resolved, and transient absorption experiments, the influence on the photophysical properties of the metalloligand exerted by the different Ln(III) cations has been investigated, together with the energy transfer efficiency from the metalloligand to the Ln(III) 4f* excited state.

Citation

Etchells, I. M., Pfrunder, M. C., Williams, J. G., & Moore, E. G. (2019). Quantification of energy transfer in bimetallic Pt(ii)–Ln(iii) complexes featuring an N^C^N-cyclometallating ligand. Dalton Transactions, 48(6), 2142-2149. https://doi.org/10.1039/c8dt04640a

Journal Article Type Article
Acceptance Date Jan 8, 2019
Online Publication Date Jan 8, 2019
Publication Date Feb 14, 2019
Deposit Date Feb 13, 2019
Publicly Available Date Mar 29, 2024
Journal Dalton Transactions
Print ISSN 1477-9226
Electronic ISSN 1477-9234
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 48
Issue 6
Pages 2142-2149
DOI https://doi.org/10.1039/c8dt04640a