title: Probing solution behaviour of metallosupramolecular complexes using pyrene fluorescence.
abstract: A new method for assessing the topology of metallosupramolecular assemblies using pyrene-appended ligands is reported. Two potentially tetradentate ligands containing one (L(1)) and two (L(2)) terminal pyrene moieties were synthesised and their complexes with Cu(+) and Cd(2+) were characterised. Photophysical measurements demonstrate that in [Cu(2)(L(1))(2)](2+), [CdL(1)](2+) and [Cu(2)(L(2))(2)](2+) the emission spectra are dominated by monomeric emission but in the cadmium complex of L(2) (where the pyrene units are in close proximity) a quenching of the luminescence coupled with weak emission at 540 nm is indicative of excimer formation.
authors.affiliation: Dept of Chemical & Biological Sciences, University of Huddersfield, Huddersfield, UK HD1 3DH.
authors.forename: Nicola M
authors.initials: NM
authors.lastname: Cox
authors.forename: Lindsay P
authors.initials: LP
authors.lastname: Harding
authors.forename: Jennifer E
authors.initials: JE
authors.lastname: Jones
authors.forename: Simon J A
authors.initials: SJ
authors.lastname: Pope
authors.forename: Craig R
authors.initials: CR
authors.lastname: Rice
authors.forename: Harry
authors.initials: H
authors.lastname: Adams