Calix[4]arene-porphyrin conjugates as versatile molecular receptors for anions |
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| Authors: | Dudic Miroslav Lhoták Pavel Stibor Ivan Lang Kamil Prosková Petra |
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| Affiliation: | Department of Organic Chemistry, Institute of Chemical Technology, Technická 5, 166 28 Prague 6, Czech Republic. |
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| Abstract: | [structure: see text] Appending tetraphenylporphyrin units to the calix[4]arene skeleton via the ureido function leads to novel anion receptors designed for anion and/or cation detection by UV-vis spectroscopy. Calixarenes in the cone or 1,3-alternate conformations bearing two ureido moieties on the upper rim represent well-preorganized cavities where the anion can be held by synchronous hydrogen bonding interaction with the NH groups. |
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