text.skipToContent text.skipToNavigation

Maximum quantity allowed is 999

Please select the quantity

Diurea and Triurea Derivatives for the Synthesis of Highly Crystalline COFs

Covalent organic frameworks (COFs) are crystalline porous materials synthesized by the covalent linkage of organic linkers, and are anticipated to be used as molecular separation or storage, or as photocatalysts, and electronics materials.1) Diurea derivatives such as 1,1'-(1,4-phenylene)diurea (1), are employed in the synthesis of COFs composed of flexible urea linkages.2) In addition, Zhu and Cooper et al. have reported a method for synthesizing β-ketoenamine-type COFs using urea-type COFs as precursors.3) Initially, urea-linked COFs were synthesized by the condensation of urea derivatives including 1 and 1,1'-([1,1'-biphenyl]-4,4'-diyl)diurea (2) with 2,4,6-triformylphloroglucinol. Since the crystallinity of COFs is improved via error-correction process during synthesis, the highly reversible urea bonds contribute to improving crystallinity. Subsequently, heating in a solvent containing a small quantity of water led to the hydrolysis of the urea bonds, followed by imine condensation, resulting in β-ketoenamine-type COFs. These “reconstructed” COFs were shown to have higher crystallinity, porosity and photocatalytic performance compared to the corresponding directly synthesized COFs.

Diurea and Triurea Derivatives for the Synthesis of Highly Crystalline COFs

References

The prices are subject to change without notice. Please confirm the newest price by our online catalog before placing an order.
In addition, sales products changes with areas. Please understand that a product is not available when the product details page is not displayed.

Session Status
Your session will timeout in 10 minutes. You will be redirected to the HOME page after session timeout. Please click the button to continue session from the same page. minute. You will be redirected to the HOME page after session timeout. Please click the button to continue session from the same page.

Your session has timed out. You will be redirected to the HOME page.