Cox, Nicola M, Harding, Lindsay P., Jones, Jennifer E., Pope, Simon JA, Rice, Craig R. and Adams, Harry (2012) Probing solution behaviour of metallosupramolecular complexes using pyrene fluorescence. Dalton Transactions, 41 (5). pp. 1568-1573. ISSN 14779226
Abstract

A new method for assessing the topology of metallosupramolecular assemblies using pyrene-appended ligands is reported. Two potentially tetradentate ligands containing one (L1) and two (L2) terminal pyrene moieties were synthesised and their complexes with Cu+ and Cd2+ were characterised. Photophysical measurements demonstrate that in [Cu2(L1)2]2+, [CdL1]2+ and [Cu2(L2)2]2+ the emission spectra are dominated by monomeric emission but in the cadmium complex of L2 (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.

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