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Issue 45, 2012
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Emission tuning in dinuclear gold complexes with diphosphanes containing alkyne and/or oligophenylene spacers

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Abstract

Reaction of the diphosphanes P∼P [PPh2(C6H4)nPPh2 (n = 1–5) and PPh2C[triple bond, length as m-dash]C(C6H4)C[triple bond, length as m-dash]CPPh2] with [AuX(tht)] (X = Cl, C6F5) in a 1 : 2 molar ratio affords dinuclear luminescent complexes of formula [(AuX)2(P∼P)]. The photoemissive properties of these complexes are mainly controlled by the presence of the diphosphane ligand, specifically by the phenylene spacers of the diphosphanes. At room temperature fluorescent (IL) processes dominate the emissions, both in solution and in the solid state. Frozen solutions or solids at 77 K display dual emissions or only one emission attributed to ligand to ligand charge transfer (LL′CT) transitions from the auxiliary ligand (L) to phenylene spacers of the diphosphane (L′).

Graphical abstract: Emission tuning in dinuclear gold complexes with diphosphanes containing alkyne and/or oligophenylene spacers

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Publication details

The article was received on 10 May 2012, accepted on 03 Jul 2012 and first published on 03 Jul 2012


Article type: Paper
DOI: 10.1039/C2DT31019H
Citation: Dalton Trans., 2012,41, 13891-13898
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    Emission tuning in dinuclear gold complexes with diphosphanes containing alkyne and/or oligophenylene spacers

    J. Cámara, O. Crespo, M. C. Gimeno, I. O. Koshevoy, A. Laguna, I. Ospino, E. S. Smirnova and S. P. Tunik, Dalton Trans., 2012, 41, 13891
    DOI: 10.1039/C2DT31019H

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