A Schiff-base cross-linked supramolecular polymer containing diiminophenol compartments and its interaction with copper(II) ions

Klein-Hitpaß, Marcel; Lynes, Amy D.; Hawes, Chris S.; Byrne, Kevin; Schmitt, Wolfgang; Gunnlaugsson, Thorfinnur

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.

Citation

Klein-Hitpaß, M., Lynes, A. D., Hawes, C. S., Byrne, K., Schmitt, W., & Gunnlaugsson, T. (2018). A Schiff-base cross-linked supramolecular polymer containing diiminophenol compartments and its interaction with copper(II) ions. Supramolecular Chemistry, 30(2), 93-102. https://doi.org/10.1080/10610278.2017.1362108

• Journal Article Type: Article
• Acceptance Date: Jul 23, 2017
• Online Publication Date: Aug 8, 2017
• Publication Date: Feb 1, 2018
• Deposit Date: Jun 14, 2023
• Journal: Supramolecular Chemistry
• Print ISSN: 1061-0278
• Electronic ISSN: 1029-0478
• Publisher: Taylor and Francis
• Peer Reviewed: Peer Reviewed
• Volume: 30
• Issue: 2
• Pages: 93-102
• DOI: https://doi.org/10.1080/10610278.2017.1362108
• Keywords: General Chemistry
• Additional Information: Peer Review Statement: The publishing and review policy for this title is described in its Aims & Scope.; Aim & Scope: http://www.tandfonline.com/action/journalInformation?show=aimsScope&journalCode=gsch20; Received: 2017-05-10; Accepted: 2017-07-23; Published: 2017-08-08