Molecular recognition of carbohydrates by a resorcinarene. Selective transport of alditols through a supported liquid membrane

A Green and Highly Efficient Solvent-free Synthesis of Novel Calicx[4]resorcinarene Derivatives Using Tungstate Sulfuric Acid

“…1 calix [4]resorcinarenes, a subclass of calixarenes, are large cyclic tetramers which have found applications, as macrocyclic receptors, 2 dendrimers in biological systems, 3 nanoparticles, 4 nano-capsule, 5 supramolecular tectons, 6 optical chemosensors, 7 host molecules or host-guest complexes, 8,9 components in liquid crystals, 10 photoresists, 11 selective membranes, 12 HPLC stationary phases, 13 surface reforming agents, 14 ion channel mimics, 15 and metal ion extraction agents. 16 For example, in a valuable study by Sanchez-Cortes, Leyton, and co-workers entitled "selective molecular recognition of polycyclic aromatic hydrocarbons (PAHs) on calix [4]arene-functionalized Ag nanoparticles by surface-enhanced raman scattering" the 25,27-dicarboethoxy-26,28-dihydroxy-p-tert-butylcalix [4]arene host molecule (DCEC) displays analytical selectivity to the polycyclic aromatic hydrocarbon guest systems bearing four benzene rings, mainly pyrene (Scheme 1).…”

Recent achievements in facilitated transport membranes for separation processes

“…Resorcinarenes have also been reported to be able to extract some sugars (Tanaka et al, 1989). Their ability to extract sugars was explored for sugar transport in supported liquid membranes, with the advantage that they provide high stability to the SLM due to their highly lipophilic nature Tbeur et al, 2000). Some sugars show an affinity for alkaline earth metals and this ability has also been used to develop liquid membranes.…”

Yttrium(III) Nitrate: A Powerful Catalyst for Green and Rapid Synthesis of Some Supramolecules

“…Calix [4]resorcinarenes, a subclass of calixarenes, are large cyclic tetramers which have been found in many applications. For example, they act as highly selective receptors, 1 ionophores for alkali and transition metals, 2 dendrimers in biological systems, 3 nanoparticles, 4 nano-capsule, 5 supramolecular tectons, 6 optical chemosensors, 7 host molecules or hostguest complexes, 8,9 components in liquid crystals, 10 photoresists, 11 selective membranes, 12 HPLC stationary phases, 13 surface reforming agents, 14 ion channel mimics, 15 and metal ion extraction agents. 16 In a study by Sanchez-Cortes and co-workers, 17 the 25,27-dicarboethoxy-26,28-dihydroxy-p-tert-butylcalix [4]arene host molecule (DCEC) displays analytical selectivity to the polycyclic aromatic hydrocarbon guest systems bearing four benzene rings, mainly pyrene.…”