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Article
Yin Chen
Cent S University
Corresponding Author
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MOFs are typical 3D crystalline materials, and amorphous MOFs emerges as a new attractive material family very recently. Herein, we report a novel layered MOF, IPM-1, which is synthesized from a cage-like organic linker with extremely weak interlaminar interaction. When subjected to external disturbance, IPM-1 degraded to an intermediate state between the crystalline and amorphous phase (1D-amorphours), in which the layers retain the in-plane two-dimension periodic structure but are misaligned in the third dimension, leading to the loss of apparent porosity and crystallinity. 1D-amorphous IPM-1 is readily exfoliated into crystalline 2D nanosheets with a thickness of 1.15 nm at gram-scale, excellent uniformity and homogeneity, lateral size up to 10 µm, and restored microporosity. They can fabricate wafer-scale thin films and present the first mass-producible 2D monolayer material. This work underlines that MOFs without apparent crystallinity can be idea precursors for the successful preparation of 2D crystalline monolayer nanosheets.
Keywords
Metal-organic-framework, IPM-1, 3D crystalline materials, monolayer nanosheets
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Subject Areas
Physical sciences/Chemistry/Materials chemistry/Metal–organic frameworks
Physical sciences/Materials science/Condensed-matter physics/Phase transitions and critical phenomena
Physical sciences/Materials science/Condensed-matter physics/Structure of solids and liquids
Physical sciences/Nanoscience and technology/Nanoscale materials/Synthesis and processing
Physical sciences/Nanoscience and technology/Nanoscale materials/Two-dimensional materials
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This is a preprint. It has not completed peer review.
Article
Yin Chen
Cent S University
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 01 Aug, 2020
No community comments so far
Subject Areas
Physical sciences/Chemistry/Materials chemistry/Metal–organic frameworks
Physical sciences/Materials science/Condensed-matter physics/Phase transitions and critical phenomena
Physical sciences/Materials science/Condensed-matter physics/Structure of solids and liquids
Physical sciences/Nanoscience and technology/Nanoscale materials/Synthesis and processing
Physical sciences/Nanoscience and technology/Nanoscale materials/Two-dimensional materials
License:
This work is licensed under a CC BY 4.0 License. Read Full License
MOFs are typical 3D crystalline materials, and amorphous MOFs emerges as a new attractive material family very recently. Herein, we report a novel layered MOF, IPM-1, which is synthesized from a cage-like organic linker with extremely weak interlaminar interaction. When subjected to external disturbance, IPM-1 degraded to an intermediate state between the crystalline and amorphous phase (1D-amorphours), in which the layers retain the in-plane two-dimension periodic structure but are misaligned in the third dimension, leading to the loss of apparent porosity and crystallinity. 1D-amorphous IPM-1 is readily exfoliated into crystalline 2D nanosheets with a thickness of 1.15 nm at gram-scale, excellent uniformity and homogeneity, lateral size up to 10 µm, and restored microporosity. They can fabricate wafer-scale thin films and present the first mass-producible 2D monolayer material. This work underlines that MOFs without apparent crystallinity can be idea precursors for the successful preparation of 2D crystalline monolayer nanosheets.
Figure 1
Figure 2
Figure 3
Figure 4
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