Self-assembly of singlet-emitting double-helical silver dimers: the curious coordination chemistry and fluorescence of bisquinolylpyridone

Farrow, Charlotte M. A., Akien, Geoffrey R., Halcovitch, Nathan R., Platts, James A. ORCID: https://orcid.org/0000-0002-1008-6595 and Coogan, M. P. 2018. Self-assembly of singlet-emitting double-helical silver dimers: the curious coordination chemistry and fluorescence of bisquinolylpyridone. Dalton Transactions 47 (11) , pp. 3906-3912. 10.1039/C7DT04744D

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Abstract

2,6-Bis(2-quinolyl)-4(1H)-pyridone 1, a novel quinoline analogue of the well-known ligand 2-terpyridone, shows unusual fluorescence with a large Stokes shift and low energy emission. Pyridine-pyridone tautomerism is investigated by NMR and theoretical methods and indicates that the low energy emission is from the pyridine form. 1 reacts with Ag(I) salts to give a double helical Ag2N6 core showing a BLUE shift in fluorescence with respect to the free ligand, which has been characterised experimentally and theoretically as involving an unusual mixed MLCT/ILCT excited state and emission from a singlet state.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Chemistry Advanced Research Computing @ Cardiff (ARCCA)
Publisher:	Royal Society of Chemistry
ISSN:	1477-9226
Date of First Compliant Deposit:	26 February 2018
Date of Acceptance:	6 February 2018
Last Modified:	05 May 2023 11:24
URI:	https://orca.cardiff.ac.uk/id/eprint/109476

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