π-π stacking interactions: Non-negligible forces for stabilizing porous supramolecular frameworks
Revealing the contribution of π-π stacking interactions in supramolecular assembly is important for understanding the intrinsic nature of molecular assembly fundamentally. However, because they are much weaker than covalent bonds, π-π stacking interactions are usually ignored in the construction of...
Gespeichert in:
Veröffentlicht in: | Science advances 2020-01, Vol.6 (2), p.eaax9976-eaax9976 |
---|---|
Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | Revealing the contribution of π-π stacking interactions in supramolecular assembly is important for understanding the intrinsic nature of molecular assembly fundamentally. However, because they are much weaker than covalent bonds, π-π stacking interactions are usually ignored in the construction of porous materials. Obtaining stable porous materials that are only dependent on π-π stacking interactions, despite being very challenging, could address this concern. Here, we present a porous supramolecular framework (
) stabilized only by intermolecular π-π stacking interactions.
shows good thermal and chemical stability not only in various organic solvents but also in aqueous solution in a broad pH range. Furthermore, featuring one-dimensional channels with dangling thiolate groups,
exhibits excellent Hg
removal performance, with adsorption capacity as high as 786.67 mg g
and an adsorption ratio as high as 99.998%. In addition,
also shows high adsorption selectivity to Hg
in the presence of a series of interfering ions. |
---|---|
ISSN: | 2375-2548 2375-2548 |
DOI: | 10.1126/sciadv.aax9976 |