Promising advances of thiacalix[4]arene in crystal structures

Abstract

Thiacalix[4]arenes are one kind of robust scaffolds and extensively applied in supramolecular chemistry and materials science owing to their novel features.

New Class of Supramolecular Bowl-Shaped Columnar Mesogens Derived from Thiacalix[4]arene Exhibiting Gelation and Organic Light-Emitting Diodes Applications

“…48 Additionally, the difference of the observed two singlets of the aromatic proton in final target compounds is nearly 0.37 ppm, which again confirms the cone confirmation of synthesized supramolecular derivatives. 49−52…”

“…48 Thiacalix [4]arene, the new member of the calixarene family has now become a robust scaffold in supramolecular chemistry and material science. 49 They possess many fascinating features such as large cavity size, binding ability toward anion, cation and transition metals with the presence of larger cavity, and also the possibility of multiple chemical modifications on their morphology. Different functionalizations on the thiacalixarene core have been extensively used in different applications like mimicking of molecular logic gates, separating biological important citations, display, and photoactive emissive compounds.…”

Synthesis, crystal structure and remote allosteric binding properties of cone thiacalix[4]pseudocrown receptors bearing anthraquinone function and different arms

“…The NMR spectral data indicate that the receptors 1-3 and intermediate I feature the cone conformation, 21 showing two singlet peaks at 1.38-0.69 ppm in the 1 H NMR and two doublet peaks at 31.5-30.7 ppm in the 13 C NMR spectra. To further examine the 3D structure of thiacalix [4]pseudocrown receptors, the single crystal structure of 2 ( Fig.…”

“…This different selectivity of 2 may be attributed to the inuence of two ester functions at the lower rim that can offer better exibility of the thiacalix [4]arene unit to remotely regulate the size of its crown cavity as the ester functions cannot x the structure via intramolecular hydrogen bonding interactions. 21 In view of the better selectivity of 2, we tried to develop a chemosensor that could discriminate Zn 2+ from Cd 2+ to some extent, considering their similarity in chemical properties. Therefore, the competitive experiments of Zn 2+ mixed with other metal ions were performed ( Fig.…”

“…[11][12][13][14] Thiacalix [4]arenes are a kind of versatile scaffolds for highly organized receptors because of their specic affinity and allosteric features in molecular recognition. [15][16][17][18][19][20][21] In recent years, many optical receptors have been designed and synthesized based on the thiacalix [4]arene scaffold. Excellent examples include quinoline, rhodamine, naphthalene, pyrene, as well as coumarin-appended thiacalix [4]arene receptors.…”