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Synthesis and Characterization of a Unimolecular Capsule

✍ Scribed by Marcus S. Brody; Christoph A. Schalley; Dmitry M. Rudkevich; Julius Rebek; Jr.

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 164 KB
Volume: 38
Category: Article
ISSN: 0044-8249
DOI: 10.1002/(sici)1521-3773(19990601)38:11<1640::aid-anie1640>3.0.co;2-y

No coin nor oath required. For personal study only.

✦ Synopsis

There is more than one way to assemble the two halves of a tethered, urea-substituted calix[4]arene dimer (shown schematically): formation of unimolecular capsules (far left), dimers, or oligomers. By combination of NMR spectroscopy and electrospray mass spectrometry, a hexamethylene spacer was shown to be exactly right to permit the preferential formation of a unimolecular capsule under inclusion of solvent or other guest molecules.

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