Self‐Assembly of Pyridinium‐Tailored Anthracene Amphiphiles into Supramolecular Hydrogels

Abstract

The mixing of a polyacid cross-linker with a pyridinium-functionalized anthracene amphiphile afforded a supramolecular hydrogel through a self-assembly process that was primarily driven by π-stacking and electrostatic interactions.

Chiral Assemblies from an Achiral Pyridinium‐Tailored Anthracene

“…With an extension of aging time, ribbons began to twist until chiral ribbons were obtained (Figure b–c). It should be noted that ribbons were composed of nanofibers, the formation of which was promoted by the side–side association as observed under field‐emission high‐resolution TEM (Figure d), similar to our previous report –. Therefore, we propose that the assembly follows the pathway as shown in Figure ; that is, from fibers to ribbons, and to twisted ribbons.…”

“…In addition, protons of the pyridinium shifted upfield, and the peaks became broad compared with those recorded in methanol, as shown in the 1 H NMR spectra (Figure S5). This change was due to the increase in electron density caused by electrostatic forces between pyridinium cations and iodide anions –. Apparently, the combination of π–π stacking, electrostatic interactions, van der Waals force, and hydrophobic effects modulated the fabrication of chiral assemblies from achiral 2‐APB .…”

Development of Natural-Drugs-Based Low-Molecular-Weight Supramolecular Gels

“…Besides the natural drugs mentioned above, other supramolecular gels based on coumarin [99], anthracene [100], arjunolic acid [101], poricoic acid A [102], and soybean sterol [103] also showed great research and application prospects, which attracted the attention of a large number of researchers.…”

Functional assembled structures of anthracene derivatives

“…Yoshizawa课题组 [53] (图16) [55] . 由于蒽的各向异性, 9-蒽-吡啶盐分子41呈 "剃刀(shaver)"状构型, 而2-蒽-吡啶盐分子42呈"刮铲 (polyacids), 制备得到了基于蒽骨架的超分子水凝胶 (图17) [58] . 研究发现, 42可以通过π-π堆积作用得到直 径为3.…”