Metal-centred versus ligand-centred luminescence quenching of a macrocyclic copper(II) complex

Bernhardt, P. V., Flanagan, B. M. and Riley, M. J. (1999) Metal-centred versus ligand-centred luminescence quenching of a macrocyclic copper(II) complex. Journal of The Chemical Society- Dalton Transactions, 20: 3579-3584. doi:10.1039/a902881a


Author Bernhardt, P. V.
Flanagan, B. M.
Riley, M. J.
Title Metal-centred versus ligand-centred luminescence quenching of a macrocyclic copper(II) complex
Journal name Journal of The Chemical Society- Dalton Transactions   Check publisher's open access policy
ISSN 0300-9246
Publication date 1999-01-01
Sub-type Article (original research)
DOI 10.1039/a902881a
Issue 20
Start page 3579
End page 3584
Total pages 6
Place of publication Cambridge, UK
Publisher The Royal Society of Chemistry
Language eng
Subject C1
250201 Transition Metal Chemistry
780103 Chemical sciences
Abstract The new macrocyclic ligand trans-6-(9-anthracenylmethylamino)-6,13-dimethyl-1,4,8,11-tetraazacyclotetradecan-13-amine has been synthesized and characterised as its copper(II) complex and the crystal structure of this complex has been determined. Fluorescence of the anthracenyl group of the macrocycle is quenched in its free base form and when complexed with Cu-II. Fluorescence returns when Lewis acids such as H+ and Zn-II are added to solutions of the ligand, indicating that photoinduced electron transfer from the amine lone pairs is responsible for fluorescence quenching in the free base form. By contrast, fluorescence of the complex is quenched by intramolecular electronic energy transfer.
Keyword Chemistry, Inorganic & Nuclear
Electron-transfer
Fluorescence
Recognition
Sensors
Water
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemistry and Molecular Biosciences
Centre for Nutrition and Food Sciences Publications
 
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Created: Mon, 13 Aug 2007, 21:24:35 EST