Calix[4]arene-porphyrin conjugates as versatile molecular receptors for anions.
[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.
Dudic
Miroslav
M
Department of Organic Chemistry, Institute of Chemical Technology, Technická 5, 166 28 Prague 6, Czech Republic.
Lhoták
Pavel
P
Stibor
Ivan
I
Lang
Kamil
K
Prosková
Petra
P
D000838:Anions / Q000032:analysis*; D001665:Binding Sites; D047250:Calixarenes; D008968:Molecular Conformation; D010636:Phenols / Q000737:chemistry*; D011166:Porphyrins / Q000737:chemistry*; D013057:Spectrum Analysis; D013329:Structure-Activity Relationship
D000838:Anions; D010636:Phenols; D011166:Porphyrins; C121325:calix(4)arene; D047250:Calixarenes