Tetra-TTF calix[4]pyrrole: a rationally designed receptor for electron-deficient neutral guests.

doi:10.1021/JA044664A

Paper

Tetra-TTF calix[4]pyrrole: a rationally designed receptor for electron-deficient neutral guests.

Published Nov 19, 2004 · K. Nielsen, Won-seob Cho, J. Jeppesen

Journal of the American Chemical Society

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138

Citations

2

Influential Citations

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Abstract

A calix[4]pyrrole incorporating four appended tetrathiafulvalene (TTF) units has been synthesized, and its receptor abilities toward neutral electron-deficient guests, such as 1,3,5-trinitrobenzene, tetrafluoro-p-benzoquinone, and tetrachloro-p-benzoquinone, have been studied in solution by UV-vis and 1H NMR spectroscopies as well as in the solid-state by X-ray crystallography. In its 1,3-alternate conformation a 1:2 sandwich-like complex-stabilized by charge transfer and hydrogen bonding interactions-is formed between the tetra-TTF calix[4]pyrrole and the guest molecules. However, upon addition of chloride ions to the complex the 1,3-alternate conformation is changed in favor of a cone conformation which serves to effect a release of the guests from the tetra-TTF calix[4]pyrrole.

Highly Cited

Study Snapshot

The tetra-TTF calix[4]pyrrole effectively binds and releases neutral electron-deficient guests, offering potential for targeted drug delivery.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

Paper

Tetra-TTF calix[4]pyrrole: a rationally designed receptor for electron-deficient neutral guests.

References

Citations

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New dimensions in calix[4]pyrrole: the land of opportunity in supramolecular chemistry

Calix[4]pyrrole, a supramolecular receptor, has diverse applications in molecular containers, ion transporters, and drug carriers, offering potential for new scientific and technological advancements.

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