Crosslinking-induced patterning of MOFs by direct photo- and electron-beam lithography

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: April 4, 2024

Abstract Metal-organic frameworks (MOFs) with diverse chemistry, structures, and properties have emerged as appealing materials for miniaturized solid-state devices. The incorporation of MOF films in these devices, such the integrated microelectronics nanophotonics, requires robust patterning methods. However, existing methods suffer from some combinations limited material adaptability, compromised resolution scalability, degraded properties. Here we report a universal, crosslinking-induced approach various MOFs, termed CLIP-MOF. Via resist-free, direct photo- electron-beam (e-beam) lithography, ligand crosslinking chemistry leads to drastically reduced solubility colloidal permitting selective removal unexposed developer solvents. This enables scalable, micro-/nanoscale (≈70 nm resolution), multimaterial MOFs on large-area, rigid or flexible substrates. Patterned preserve their crystallinity, porosity, other tailored targeted applications, diffractive gas sensors electrochromic pixels. combined features CLIP-MOF create more possibilities system-level integration electronic, photonic, biomedical

Language: Английский

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12 Connecting Sites Linked Three‐dimensional Covalent Organic Frameworks with Intrinsic Non‐interpenetrated shp Topology for Photocatalytic H₂O₂ Synthesis

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(15)

Published: Feb. 9, 2024

Developing high connectivity (>8) three-dimensional (3D) covalent organic frameworks (COFs) towards new topologies and functions remains a great challenge owing to the difficulty in getting building blocks. This however represents most important step promoting diversity of COFs due still limited dynamic bonds available for constructing at this stage. Herein, highly connected phthalocyanine-based (Pc-based) 3D MPc-THHI-COFs (M=H

Language: Английский

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Programming Tetrathiafulvalene‐Based Covalent Organic Frameworks for Promoted Photoinduced Molecular Oxygen Activation

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(29)

Published: May 6, 2024

Abstract Despite the pivotal role of molecular oxygen (O 2 ) activation in artificial photosynthesis, efficiency is often restricted by sluggish exciton dissociation and charge transfer kinetics within polymer photocatalysts. Herein, we propose two tetrathiafulvalene (TTF)‐based imine‐linked covalent organic frameworks (COFs) with tailored donor‐acceptor (D–A) structures, TTF‐PDI‐COF TTF‐TFPP‐COF, to promote O activation. Because enhanced electron push‐pull interactions that facilitated separation behavior, exhibited superior photocatalytic activity electron‐induced reactions over TTF‐TFPP‐COF under visible light irradiation, including photosynthesis ( E )‐3‐amino‐2‐thiocyano‐ α , β ‐unsaturated compounds H . These findings highlight significant potential rational design COFs D–A configurations as suitable candidates for advanced applications.

Language: Английский

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Peptide hydrogen-bonded organic frameworks

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(8), P. 3640 - 3655

Published: Jan. 1, 2024

This tutorial review discusses the design principles, implications, and future challenges associated with peptide-based hydrogen-bonded porous frameworks (P-HPFs).

Language: Английский

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Push–pull–pull interactions of 2D imide–imine-based covalent organic framework to promote charge separation in photocatalytic hydrogen production

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(18), P. 10790 - 10798

Published: Jan. 1, 2024

This study demonstrated the synthesis of imide–imine based COFs, boosting electrical conductivity in network due to presence dual electron-acceptor centers. makes them efficient for light-induced hydrogen evolution reactions.

Language: Английский

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