A Schiff-base cross-linked supramolecular polymer containing diiminophenol compartments and its interaction with copper(II) ions
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2018Access:
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Marcel Klein-Hitpaß, Amy D. Lynes, Chris S. Hawes, Kevin Byrne, Wolfgang Schmitt & Thorfinnur Gunnlaugsson, A Schiff-base cross-linked supramolecular polymer containing diiminophenol compartments and its interaction with copper(II) ions, Supramolecular Chemistry, 2018, 30, 2, 93-102Download Item:
Abstract:
We report here the preparation of a Schiff-base linked organic polymer 1 based on linkages containing the potent supramolecular aggregator benzene-1,3,5-tricarboxamide, connected through 2,6-diiminophenol metal binding pockets into a cross-linked polymer. The morphological and physical properties of this material are studied using electron microscopy techniques, thermal analysis, NMR, fluorescence spectroscopy and gas adsorption studies. The interaction of the polymer 1 with CuII ions is then investigated by soaking the material with methanolic copper acetate solution, and studying the resulting aggregates using EDX microscopy and FTIR spectroscopy. A small-molecule model compound 2 is also prepared and crystallographically characterised to act as a spectroscopic comparison, providing strong evidence that 1 interacts with copper ions through a nucleation/seeding mechanism for the growth of microcrystalline copper acetate deposits, rather than via chemisorption of the copper ions within the diiminophenol binding pockets. Preliminary results suggest a similar mechanism for CoII adsorption, while ZnII ions exhibit a separate interaction mode.
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http://people.tcd.ie/schmittwhttp://people.tcd.ie/gunnlaut
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Supramolecular Chemistry;30;
2;
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Benzene-1,3,5- tricarboxamide, Self-assembly, Supramolecular chemistry, Organic polymers, Schiff baseDOI:
http://dx.doi.org/10.1080/10610278.2017.1362108Metadata
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