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Issue 19, 2011
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Cooperative self-assembly of a macrocyclic Schiff base complex

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Abstract

A metal template approach affords in high yield a tetra-Zn(salphen) macrocycle (3) which shows strong and cooperative self-assembly mediated by the formation of Zn(salphen) dimer units held together viaμ2-phenoxo interactions. A cooperative binding mode for the tetranuclear Zn4 macrocycle 3 is supported by comparison of UV-vis and fluorescence titration data recorded for 3 when compared with respective mononuclear and dinuclear Zn(salphen) model compounds. UV-vis dilution experiments carried out for Zn4 macrocycle 3 and its Pd4 analogue 4, as well as comparative TEM studies involving the same tetranuclear macrocycles further support the strong assembly behavior of 3. This self-assembly seems to be primarily dictated by its ability to form multiple, self-assembled dimeric [Zn(salphen)]2 units.

Graphical abstract: Cooperative self-assembly of a macrocyclic Schiff base complex

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Publication details

The article was received on 13 Jan 2011, accepted on 07 Mar 2011 and first published on 01 Apr 2011


Article type: Paper
DOI: 10.1039/C1DT10069F
Citation: Dalton Trans., 2011,40, 5236-5243
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    Cooperative self-assembly of a macrocyclic Schiff base complex

    G. Salassa, A. M. Castilla and A. W. Kleij, Dalton Trans., 2011, 40, 5236
    DOI: 10.1039/C1DT10069F

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