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Issue 17, 2011
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Epitaxial electrodeposition of chiral CuO films from copper(ii) complexes of malic acid on Cu(111) and Cu(110) single crystals

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Abstract

Chiral films of CuO were anodically electrodeposited onto Cu(111) and Cu(110) single crystals from alkaline solutions of Cu(II) complexed with the malate ion. The chirality of the film was directed by the chiral solution precursor. X-Ray diffraction pole figures and stereographic projections were used to determine the absolute configuration of the films. CuO films grown on Cu(111) from L-malate had ([1 with combining macron]11) and (311) orientations and the films grown from D-malate had (1[1 with combining macron][1 with combining macron]) and ([3 with combining macron][1 with combining macron][1 with combining macron]) orientations. CuO films grown on Cu(110) from L-malate had (110) and (31[1 with combining macron]) orientations, whereas the films grown from D-malate deposition bath had ([1 with combining macron][1 with combining macron]0) and ([3 with combining macron][1 with combining macron]1) orientations. The CuO films grown from a racemic malate bath showed only the ([1 with combining macron]11) and (1[1 with combining macron][1 with combining macron]) orientations on Cu(111) and (110) and ([1 with combining macron][1 with combining macron]0) orientations on Cu(110). Single crystals of L-, D- and DL-bis(malato)copper(II) dihydrate complexes were synthesized and the structures were determined with X-ray crystallography. The chiral complexes of bis(malato)copper(II) dihydrate were each found to belong to the monoclinic space groupP21 whereas the racemic complex belonged to the centrosymmetric P21/c space group. The chiral complexes formed coordination polymers along the b-axis, with the carboxyl group from each complex linking to the axial site of an adjacent Cu(II) complex. In the complex produced from the racemic mixture, no coordination polymers formed.

Graphical abstract: Epitaxial electrodeposition of chiral CuO films from copper(ii) complexes of malic acid on Cu(111) and Cu(110) single crystals

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Supplementary files

Article information


Submitted
11 Oct 2010
Accepted
21 Feb 2011
First published
18 Mar 2011

J. Mater. Chem., 2011,21, 6209-6216
Article type
Paper

Epitaxial electrodeposition of chiral CuO films from copper(II) complexes of malic acid on Cu(111) and Cu(110) single crystals

R. V. Gudavarthy, N. Burla, E. A. Kulp, S. J. Limmer, E. Sinn and J. A. Switzer, J. Mater. Chem., 2011, 21, 6209
DOI: 10.1039/C0JM03423A

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