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Issue 33, 2009
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Copper(I) complexes of 6,6′-disubstituted 2,2′-bipyridine dicarboxylic acids: new complexes for incorporation into copper-based dye sensitized solar cells (DSCs)

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Abstract

Synthetic approaches to 6,6′-disubstituted-2,2′-bipyridine ligands bearing carboxylic acid substituents at the 4,4′ or 5,5′-positions are described. Copper(I) complexes with these ligands have been prepared for use in copper-based dye-sensitized solar cells. The single-crystal structures of 6,6′-dimethyl-2,2′-bipyridine-4,4′-dicarboxylic acid (H24), [H36][CF3CO2]·2CF3CO2H (H26 = 6,6′-diphenyl-2,2′-bipyridine-4,4′-dicarboxylic acid) and 4[Cu(H22)(H2)]·3H2O (H22 = 6,6′-dimethyl-2,2′-bipyridine-5,5′-dicarboxylic acid) are described, as well as those of the intermediates (1E,5E)-1,6-di(2-furyl)hexa-1,5-diene-3,4-dione and 4,4′-di(2-furyl)-6,6′-dimethyl-2,2′-bipyridine (3), and the copper(I) complex [Cu(3)2][PF6]. The roles that classical and non-classical hydrogen bonding and π-stacking interactions play in determining the solid-state packing in these structures are discussed. Preliminary studies of DSCs with these complexes are reported.

Graphical abstract: Copper(i) complexes of 6,6′-disubstituted 2,2′-bipyridine dicarboxylic acids: new complexes for incorporation into copper-based dye sensitized solar cells (DSCs)

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Publication details

The article was received on 21 Jan 2009, accepted on 02 Jun 2009 and first published on 07 Jul 2009


Article type: Paper
DOI: 10.1039/B901346F
Dalton Trans., 2009, 6634-6644

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    Copper(I) complexes of 6,6′-disubstituted 2,2′-bipyridine dicarboxylic acids: new complexes for incorporation into copper-based dye sensitized solar cells (DSCs)

    E. C. Constable, A. H. Redondo, C. E. Housecroft, M. Neuburger and S. Schaffner, Dalton Trans., 2009, 6634
    DOI: 10.1039/B901346F

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