Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12779/4804
Title: Ferrocenyl-functionalised terpyridines and their transition-metal complexes: Syntheses, structures and spectroscopic and electrochemical properties
Authors: Siemeling, U.
der Bruggen, J. V.
Vorfeld, U.
Neumann, B.
Stammler, A.
Stammler, H. G.
Brockhinke, A.
Plessow, R.
Zanello, Piero
Laschi, Franco 
Fabrizi De Biani, Fabrizia 
Fontani, M.
Steenken, S.
Stapper, M.
Gurzadyan, G.
Issue Date: 2003
Project: None 
Journal: CHEMISTRY-A EUROPEAN JOURNAL
Abstract: 
Terpyridine ligands of the type Fc′-X-tpy′ (Fc′=ferrocenyl or octamethylferrocenyl, X=rigid spacer, tpy′=4′-substituted 2,2′:6′,2″-terpyridine) were prepared, crystallographically characterised and used for the synthesis of di- and trinuclear bis(terpyridine) complexes of RuII, FeII and ZnII. Donor–sensitiser dyads and triads based on RuII were thoroughly investigated by (spectro)electrochemistry, UV/Vis, transient absorption and luminescence spectroscopy, and an energy level scheme was derived on the basis of the data collected. Intramolecular quenching of the photoexcited RuII complexes by the redox-active Fc′ groups can occur reductively and by energy transfer. Both the redox potential of the donor Fc′ and the nature of the spacer X have a decisive influence on excited-state lifetimes and emission properties of the complexes. Some of the compounds show room-temperature luminescence, which is unprecedented for ferrocenyl-functionalised compounds of this kind.
Description: 
40264
URI: http://hdl.handle.net/20.500.12779/4804
ISSN: 0947-6539
DOI: 10.1002/chem.200204412
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