Two-dimensional amine and hydroxy functionalized fused aromatic covalent organic framework

Ordered two-dimensional covalent organic frameworks (COFs) have generally been synthesized using reversible reactions. It has been difficult to synthesize a similar degree of ordered COFs using irreversible reactions. Developing COFs with a fused aromatic ring system via an irreversible reaction is...

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Bibliographic Details
Published in:Communications chemistry 2020-03, Vol.3 (1), p.31-31, Article 31
Main Authors: Mahmood, Javeed, Ahmad, Ishfaq, Jung, Minbok, Seo, Jeong-Min, Yu, Soo-Young, Noh, Hyuk-Jun, Kim, Young Hyun, Shin, Hyung-Joon, Baek, Jong-Beom
Format: Article
Language:English
Subjects:
639/301/357
639/301/357/1018
639/638/298
Aromatic compounds
Bonding strength
Chemical synthesis
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Covalence
Covalent bonds
Crystal structure
Crystallinity
Diffraction patterns
Dimensional stability
Error correction
Functional groups
Physiochemistry
Scanning tunneling microscopy
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Summary:Ordered two-dimensional covalent organic frameworks (COFs) have generally been synthesized using reversible reactions. It has been difficult to synthesize a similar degree of ordered COFs using irreversible reactions. Developing COFs with a fused aromatic ring system via an irreversible reaction is highly desirable but has remained a significant challenge. Here we demonstrate a COF that can be synthesized from organic building blocks via irreversible condensation (aromatization). The as-synthesized robust fused aromatic COF (F-COF) exhibits high crystallinity. Its lattice structure is characterized by scanning tunneling microscopy and X-ray diffraction pattern. Because of its fused aromatic ring system, the F-COF structure possesses high physiochemical stability, due to the absence of hydrolysable weak covalent bonds. Two-dimensional covalent organic frameworks (2D COFs) are commonly synthesised through dynamic covalent chemistry, as it allows for thermodynamic ‘error correction' which enhances crystallinity. Here a crystalline 2D COF with amine and hydroxyl functional groups within the pores is synthesised through kinetically-controlled reactions.
ISSN:2399-3669
2399-3669
DOI:10.1038/s42004-020-0278-1