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Issue 11, 2018
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Self-assembly of singlet-emitting double-helical silver dimers: the curious coordination chemistry and fluorescence of bisquinolylpyridone

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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.

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

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Publication details

The article was received on 15 Dec 2017, accepted on 06 Feb 2018 and first published on 09 Feb 2018


Article type: Paper
DOI: 10.1039/C7DT04744D
Citation: Dalton Trans., 2018,47, 3906-3912
  • Open access: Creative Commons BY license
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    Self-assembly of singlet-emitting double-helical silver dimers: the curious coordination chemistry and fluorescence of bisquinolylpyridone

    C. M. A. Farrow, G. R. Akien, N. R. Halcovitch, J. A. Platts and M. P. Coogan, Dalton Trans., 2018, 47, 3906
    DOI: 10.1039/C7DT04744D

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