Anions are found throughout Nature, and while they participate in important biological cycles, they can also, when over-abundant, be quite detrimental, resulting in serious pollution issues. Our group has designed and synthesized macrocyclic and non-cyclic ligands as anion hosts in order to better understand sometimes complex binding interactions, with longer term goals for applications such as sensing and separations. Recently our group has focused on multi-functional hosts, with two or more binding sites for targeting multiple tasks. One of these hosts is a pyrazine-based tetracarboxamide (<b>1</b>), with potentially two binding sites. This double-sided host has been found to form gels in which properties can be fine-tuned with additives such as anions. Other multi-tasking hosts include ion pair hosts, and fluorescent sensors. This presentation will describe advances in understanding the chemistry and structural aspects of these multi-tasking supramolecular systems.

Multi-tasking supramolecular host-guest chemistry

2019 Spring National Meeting

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