A comparative structural study of four para-sulphonato-calix-[4]-arene organic di- and triammonium cation complexes

Structural study of a small molecule receptor bound to dimethyllysine in lysozyme

“… 6 , 49 Similar interactions were found previously in complexes of sclx 4 with tetramethylammonium cations. 22 …”

Assembly modes in the solid state structure of the complexes of melamine mono-cations with para-calix[4]arene sulfonic acid and calix[4]arene dihydroxyphosphonic acid

“…The generation of bilayers with sulfonate groups facing into a hydrophilic environment containing water and the sodium cations included in a more hydrophobic core composed of the macrocycles, led to this structure being named an organic clay. 15 A number of more complex structural motifs have been determined ranging from traversed bilayers, 16 resembling bilayer membranes, through tubes 17 to spheres 18 and other geometrical solids. 19 For calix [4]arene dihydroxyphosphonic acid, all of the observed structures have been based on interdigitation of aromatic rings producing an interpenetrating dimeric structural motif.…”

Amphiphilic p‐tert‐butylthiacalix[4]arenes containing quaternary ammonium groups: from small molecules toward water‐soluble nanoscale associates

“…Synthesis of the nanosized particles based on organic compounds is one of the perspective tendencies of the investigations in the field of supramolecular chemistry and nanotechnology . Supramolecular self‐assembling is one of the convenient and inexpensive ways to create nanoscale structures . During the self‐association of organic compounds acting as ligands or during the aggregation of receptors and substrates by non‐covalent interactions, the formation of colloidal particles can be observed .…”

“…Usually, the structure and properties of supramolecular particles can be predetermined by covalent synthesis of a receptor . Synthetic macrocyclic platform, p‐tert ‐butylthiacalix[4]arene, was specified for the synthesis of receptors .…”

“…There are many articles describing the formation of host–guest complexes, dimer capsules, supramolecular associates, nanosized particles based on calixarene molecules, and different types of substrates (metal cations, halogen anions, and small organic molecules) at various conditions . In our recent publications, we determined that p‐tert ‐butylthiacalix[4]arenes are able to form nanosized associates with cations of s ‐, p ‐, and d ‐elements and dicarboxylic acids in organic phase .…”