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Article Dans Une Revue Journal of the American Chemical Society Année : 2023

Topological Isomerism in Three-Dimensional Covalent Organic Frameworks

Yaozu Liu
  • Fonction : Auteur
Zitao Wang
  • Fonction : Auteur
Jinquan Suo
  • Fonction : Auteur
Junxia Ren
  • Fonction : Auteur
Jianchuan Liu
  • Fonction : Auteur
Yujie Wang
  • Fonction : Auteur
Shilun Qiu
  • Fonction : Auteur
Qianrong Fang

Résumé

Although isomerism is a typical and significant phenomenon in organic chemistry, it is rarely found in covalent organic framework (COF) materials. Herein, for the first time, we report a controllable synthesis of topological isomers in three-dimensional COFs via a distinctive tetrahedral building unit under different solvents. Based on this strategy, both isomers with a dia or qtz net (termed JUC-620 and JUC-621) have been obtained, and their structures are determined by combining powder X-ray diffraction and transmission electron microscopy. Remarkably, these architectures show a distinct difference in their porous features; for example, JUC-621 with a qtz net exhibits permanent mesopores (up to ∼23 Å) and high surface area (∼2060 m2 g–1), which far surpasses those of JUC-620 with a dia net (pore size of ∼12 Å and surface area of 980 m2 g–1). Furthermore, mesoporous JUC-621 can remove dye molecules efficiently and achieves excellent iodine adsorption (up to 6.7 g g–1), which is 2.3 times that of microporous JUC-620 (∼2.9 g g–1). This work thus provides a new way for constructing COF isomers and promotes structural diversity and promising applications of COF materials.

Domaines

Chimie
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Dates et versions

hal-04280289 , version 1 (10-11-2023)

Identifiants

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Yaozu Liu, Jingwei Li, Jia Lv, Zitao Wang, Jinquan Suo, et al.. Topological Isomerism in Three-Dimensional Covalent Organic Frameworks. Journal of the American Chemical Society, 2023, 145 (17), pp.9679-9685. ⟨10.1021/jacs.3c01070⟩. ⟨hal-04280289⟩
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