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

Journal article

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 stat

Authors: Farrow, CMA; Akien, GR; Halcovitch, NR; Platts, JA; Coogan, MP

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Royal Society of Chemistry
• Journal: Dalton Transactions
• Volume: 47
• Issue: 11
• Pages: 3906-3912
• Publication date: 2018-01-01
• DOI: 10.1039/c7dt04744d
• EISSN: 1477-9234
• ISSN: 1477-9226
• Language: English
• Keywords: Materials science; Excited state; Atomic physics; Fluorescence; Ligand (biochemistry); Optoelectronics; Quinoline; Photochemistry; Stokes shift; Crystallography; Metal; Stereochemistry; Chemistry; Coordination complex; Tautomer; Luminescence; Singlet state; Organic chemistry; Pyridine