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Issue 23, 2006
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Supramolecular ‘flat’ Mn9 grid complexes—towards functional molecular platforms

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Flat, quantum dot like arrays of closely spaced, electron rich metal centres are seen as attractive subunits for device capability at the molecular level. Mn(II)9 grids, formed by self-assembly processes using ‘tritopic’ pyridine-2,6-dihydrazone ligands, provide easy and pre-programmable routes to such systems, and have been shown to exhibit a number of potentially useful physical properties, which could be utilized to generate bi-stable molecular based states. Their ability to form surface monolayers, which can be mapped by STM techniques, bodes well for their possible integration into nanometer scale electronic components of the future. This report highlights some new Mn(II)9 grids, with functionalized ligand sites, that may provide suitable anchor points to surfaces and also be potential donor sites capable of further grid elaboration. Structures, magnetic properties, electrochemical properties, surface studies on HOPG (highly ordered pyrolytic graphite), including the imaging of individual metal ion sites in the grid using CITS (current imaging tunneling spectroscopy) are discussed, in addition to an analysis of the photophysics of a stable mixed oxidation state [Mn(III)4Mn(II)5] grid. The grid physical properties as a whole are assessed in the light of reasonable approaches to the use of such molecules as nanometer scale devices.

Graphical abstract: Supramolecular ‘flat’ Mn9 grid complexes—towards functional molecular platforms

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The article was received on 08 Nov 2005, accepted on 27 Jan 2006 and first published on 12 May 2006

Article type: Paper
DOI: 10.1039/B515801J
Citation: Dalton Trans., 2006,0, 2835-2851

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    Supramolecular ‘flat’ Mn9 grid complexes—towards functional molecular platforms

    V. A. Milway, S. M. T. Abedin, V. Niel, T. L. Kelly, L. N. Dawe, S. K. Dey, D. W. Thompson, D. O. Miller, M. S. Alam, P. Müller and L. K. Thompson, Dalton Trans., 2006, 0, 2835
    DOI: 10.1039/B515801J

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