Solution‐Processable Metal–Organic Framework Nanosheets with Variable Functionalities

Metal–organic frameworks (MOFs) intrinsically lack fluidity and thus solution processability. Direct synthesis of MOFs exhibiting solution processability like polymers remains challenging but highly sought‐after for multitudinous applications. Herein, a one‐pot, surfactant‐free, and scalable synthes...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Weinheim) 2021-07, Vol.33 (29), p.e2101257-n/a
Hauptverfasser: Yuan, Hongye, Liu, Guoliang, Qiao, Zhiwei, Li, Nanxi, Buenconsejo, Pio John S., Xi, Shibo, Karmakar, Avishek, Li, Mengsha, Cai, Hong, Pennycook, Stephen John, Zhao, Dan
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Metal–organic frameworks (MOFs) intrinsically lack fluidity and thus solution processability. Direct synthesis of MOFs exhibiting solution processability like polymers remains challenging but highly sought‐after for multitudinous applications. Herein, a one‐pot, surfactant‐free, and scalable synthesis of highly stable MOF suspensions composed of exceptionally large (average area > 15 000 µm2) NUS‐8 nanosheets with variable functionalities and excellent solution processability is presented. This is achieved by adding capping molecules during the synthesis, and by judicious controls of precursor concentration and MOF nanosheet–solvent interactions. The resulting 2D NUS‐8 nanosheets with variable functionalities exhibit excellent solution processability. As such, relevant monoliths, aero‐ and xerogels, and large‐area textured films with a great homogeneity, controllable thickness, and appreciable mechanical properties can be facilely fabricated. Additionally, from both the molecular‐ and chip‐level it is demonstrated that capacitive sensors integrated with NUS‐8 films functionalized with different terminal groups exhibit distinguishable sensing behaviors toward acetone due to their disparate host–guest interactions. It is envisioned that this simple approach will greatly facilitate the integration of MOFs in miniaturized electronic devices and benefit their mass production. Direct, scalable, and surfactant‐free synthesis of metal–organic framework suspensions encompassing exceptionally large NUS‐8 nanosheets with variable functionalities and excellent solution processability is presented. Relevant monoliths, aero‐ and xerogels, and large‐area textured films with a great homogeneity, controllable thickness, and appreciable mechanical properties can be facilely fabricated. The sensors coated with NUS‐8 possessing variable functionalities exhibit distinguishable sensing behaviors toward acetone.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.202101257