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Luminescent anion recognition: Probing the interaction between dihydrogenphosphate anions and Ru(II) polypyridyl complexes in organic and aqueous media.

Duff, Thomas and Grüßing, André and Thomas, Jean-Luc and Duati, Marco and Vos, Johannes G. (2003) Luminescent anion recognition: Probing the interaction between dihydrogenphosphate anions and Ru(II) polypyridyl complexes in organic and aqueous media. Polyhedron, 22 (5). pp. 775-780. ISSN 0277-5387

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Abstract

A photophysical study of the interaction between dihydrogen phosphate anions and a series of ruthenium polypyridyl complexes containing anion receptor 4,4'-bis[(2-methoxyethyl)carbamoyl]-2,2'-bipyridine (L1) is reported. The complexes investigated are of the type [Ru(L)[2](L1)]X[2] and [Ru(L1)[3]]X[2], where L is 2,2'-bipyridyl or 1,10-phenanthroline and X is chloride or PF[6]-. The emission properties of the compounds are studied as a function of the anion concentrations using emission lifetime and steady-state measurements. For the mixed ligand complexes the emission intensity and lifetime increases upon the addition of 2.5 molar equivalents of H[2]PO[4]-, further additions do not result in further increases. For [Ru(L1)[3]]X[2] the emission increases upon addition of the first 2.5 equivalents of dihydrogen phosphate, however, further increases lead to a decrease in both emission intensity and lifetime. The effect of the addition of trace amounts of water is also examined.

Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:anion; receptor; emission intensity; complexes; ruthenium;
Subjects:Physical Sciences > Chemistry
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Chemical Sciences
Research Initiatives and Centres > National Centre for Sensor Research (NCSR)
Publisher:Elsevier
Official URL:http://dx.doi.org/10.1016/S0277-5387(02)01409-2
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:30
Deposited On:08 Dec 2006 by DORAS Administrator. Last Modified 30 Jan 2009 09:52

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