Construction of Cyclodextrin/Aminoclay-Based Supramolecular Hydrogel and Its I₃^-/I₂ Adsorption Property

Abstract

Aminoclay (AC), as a kind of layered silicates with positive charges, shows high dispersity in water and has been widely applied in the fabrication of intelligent hybrid hydrogel. Herein, heptakis-[6-deoxy-6-(2-sulfanylethanesulfonic acid)]-β-cyclodextrin (SCD), a kind of negatively charged cyclodextrin, was employed to construct the supramolecular hydrogel with aminoclay through the static electronic interactions, and the resultant SCD-AC hydrogel was fully characterized by means of X-ray powder diffraction (XRD), scanning electronic microscopy (SEM), fourier transform infrared spectroscopy (FT-IR), zeta potential, rheological test, etc. Significantly, the SCD-AC hydrogel can efficiently absorb not only I 3 ion in aqueous solution but also I 2 molecule in organic solvent, giving a high adsorption capacity up to 90% with 10 min.

Cyclodextrin-Based Supramolecular Hydrogel as a Selective Chiral Adsorption/Separation Platform for Tryptophan Enantiomers

“…Therein, cyclodextrin-based hydrogels combine the advantages of cyclodextrin and hydrogels, which are water soluble, biocompatible, elastic, and microfluidic . Through hydrogen bonding, , electrostatic interaction, , and host–guest interaction, a series of cyclodextrin-based hydrogel materials have been constructed and widely used in drug loading, pollutant removal, − sterilization, luminescent materials, , and intelligent materials. − In 2002, Kato et al reported a novel sol–gel method for monolithic capillary columns that encapsulated proteins to recognize enantiomers, showing the application potential as a substrate for protein encapsulation.…”

Polymerization boosting cascade energy transfer based on opened glucopyranosyl β-cyclodextrin

“…1(d) exhibits that the storage modulus (G 0 ) value of ACD/CS was larger than the loss modulus (G 00 ) at 1% strain, implying that ACD/CS has a stable hydrogel structure. 18 Furthermore, the hydrogel can be stored in a syringe and then injected onto a glass plate to form the numbers ''517'' (ESI, † Video).…”