Calix[n]pyrroles are synthetic compounds containing four or more pyrrole or pyrrole-like heterocyclic subunits within their non-conjugated frameworks. They act as simple-to-prepare anion binding agents. Lately, the chemistry of calixpyrrole-type compounds has grown to include systems built up from bipyrrole, bis(pyrrolyl)benzene, biimidazole, and a number of other heterocyclic subunits. While this latter synthetic chemistry will be reviewed briefly, in this lecture calix[n]pyrroles will be discussed in the context of recent collaborative efforts to develop �tunable� systems that are 1) capable of binding, extracting, and transporting selected substrates, including ion pairs, 2) acting as �molecular switches�, �capsules�, and �logic gates� for electron transfer reactions, as well as 3) serving as precursors for environmentally responsive, self-assembled materials. The potential utility of modified calixpyrroles in areas as diverse as energy storage, explosives detection, ion extraction, materials chemistry, drug development, and other areas of current technological interest will be highlighted.

Calixpyrroles: Anion receptors, molecular building blocks, and "chemical switches"

243rd National Meeting (2012)

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