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...

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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
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container_issue 29
container_start_page e2101257
container_title Advanced materials (Weinheim)
container_volume 33
creator 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
description 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.
doi_str_mv 10.1002/adma.202101257
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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 &gt; 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. 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subjects 2D nanosheets
Chemical synthesis
Electronic devices
gas sensing
Homogeneity
Mass production
Mechanical properties
Metal-organic frameworks
Nanosheets
solution processability
Stability
Xerogels
title Solution‐Processable Metal–Organic Framework Nanosheets with Variable Functionalities
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