Three-Dimensional Mesoporous Covalent Organic Frameworks through Steric Hindrance Engineering - Normandie Université Access content directly
Journal Articles Journal of the American Chemical Society Year : 2020

Three-Dimensional Mesoporous Covalent Organic Frameworks through Steric Hindrance Engineering

Yujie Wang
  • Function : Author
Yaozu Liu
  • Function : Author
Hui Li
  • Function : Author
Xinyu Guan
  • Function : Author
Ming Xue
  • Function : Author
Shilun Qiu
  • Function : Author
Qianrong Fang
  • Function : Author

Abstract

The development of three-dimensional covalent organic frameworks (COFs) with large pores and high surface areas is of great importance for various applications. However, it remains a major challenge due to the unavoidable structural interpenetration and pore collapse after the removal of guest species sitiated in the pores. Herein, we report for the first time a series of 3D mesoporous COFs through a general strategy of enhanced steric hindrance. By using methoxy-modified monomer and increasing methyl groups of linkers, these 3D COFs can be obtained successfully as exclusively non-interpenetrated diamondoid structures, permanent mesopores (up to 26.5 Å), and high surface areas (> 3000 m 2 g-1), which are far superior to those of reported conventional COFs with the same topology. This work thus opens a way to create 3D large-porous COFs for potential applications in adsorption and separation of large inorganic, organic, and biological species.
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Dates and versions

hal-03033995 , version 1 (01-12-2020)

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Yujie Wang, Yaozu Liu, Hui Li, Xinyu Guan, Ming Xue, et al.. Three-Dimensional Mesoporous Covalent Organic Frameworks through Steric Hindrance Engineering. Journal of the American Chemical Society, 2020, 142 (8), pp.3736-3741. ⟨10.1021/jacs.0c00560⟩. ⟨hal-03033995⟩
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