Results 11 to 20 of about 2,493,217 (300)

Covalent Organic Frameworks—Organic Chemistry Beyond the Molecule [PDF]

open access: yesMolecules, 2017
The synthesis of organic molecules has at its core, purity, definitiveness of structure, and the ability to access specific atoms through chemical reactions.
Christian S. Diercks   +2 more
doaj   +2 more sources

Antiaromatic Covalent Organic Frameworks Based on Dibenzopentalenes [PDF]

open access: yes, 2022
Despite their inherent instability, 4n pi-systems have recently received significant attention due to their unique optical and electronic properties.
Josefine, Sprachmann   +8 more
core   +2 more sources

Organic batteries based on redox-active covalent organic frameworks: from molecular design to electrode optimisation [PDF]

open access: yes, 2023
Electroactive organic materials have received much attention as alternative electrodes for metal-ion batteries due to their tuneable electrochemical properties, high theoretical capacity, resources availability, and environmental friendliness.
Manuel, Souto   +2 more
core   +1 more source

Crystalline Polyphenylene Covalent Organic Frameworks [PDF]

open access: yes, 2023
The synthesis of crystalline polyphenylene covalent organic frameworks (COFs) was accomplished by linking fluorinated tris(4-acetylphenyl)benzene building units using aldol cyclotrimerization.
Omar, Yaghi   +6 more
core   +2 more sources

Efficient Room-Temperature Phosphorescence of Covalent Organic Frameworks through Covalent Halogen Doping [PDF]

open access: yes, 2022
Organic room-temperature phosphorescence, a spin-forbidden radiative process, has emerged as an interesting but rare phenomenon with multiple potential applications in optoelectronic devices, biosensing, and anticounterfeiting.
Cory, Ruchlin   +5 more
core   +2 more sources

Accumulation of Sulfonic Acid Groups Anchored in Covalent Organic Frameworks as an Intrinsic Proton‐Conducting Electrolyte [PDF]

open access: yes, 2021
Covalent organic frameworks (COFs) are a novel class of crystalline porous polymers, which possessed high porosity, excellent stability, and regular nanochannels.
Lipeng Zhai   +15 more
core   +1 more source

Hydrazide-Linked Covalent Organic Frameworks for Water Harvesting [PDF]

open access: yes, 2022
We report a postsynthetic strategy and its implementation to make covalent organic frameworks (COFs) with irreversible hydrazide linkages. This involved the synthesis of three 2D and 3D hydrazine-linked frameworks and their oxidation.
Omar, Yaghi   +5 more
core   +2 more sources

Using Sound to Synthesize Covalent Organic Frameworks in Water [PDF]

open access: yes, 2021
Most covalent organic frameworks (COFs) are synthesized using solvothermal conditions (>120 °C, >72 h) in harmful organic solvents. We report a strategy for rapidly synthesizing imine-linked COFs (< 60 min) in aqueous acetic acid using sonochemistry ...
Wei, Zhao   +13 more
core   +2 more sources

Molecular Recognition and Band Alignment in 3-D Covalent Organic Frameworks for Co-Crystalline Organic Photovoltaics [PDF]

open access: yes, 2020
Covalent organic frameworks (COFs) have emerged as versatile, functional materials comprised of low-cost molecular building blocks. The permanent porosity, long-range order, and high surface area of 3D-COFs permit co-crystallization with other materials ...
Jordan M, Cox   +3 more
core   +1 more source

Room-temperature stacking disorder in layered covalent-organic frameworks from machine-learning force fields [PDF]

open access: yes, 2023
The local structures of layered covalent-organic frameworks (COFs) deviate from the average crystal structures assigned from X-ray diffraction experiments.
Ju, Huang   +5 more
core   +1 more source

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