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Rationally Designed 2D Covalent Organic Framework with a Brick-Wall Topology

  • Author(s): Cai, SL
  • Zhang, K
  • Tan, JB
  • Wang, S
  • Zheng, SR
  • Fan, J
  • Yu, Y
  • Zhang, WG
  • Liu, Y
  • et al.
Abstract

© 2016 American Chemical Society. We report the design and synthesis of an imine-based two-dimensional covalent organic framework (2D COF) with a novel brick-wall topology by judiciously choosing a tritopic T-shaped building block and a ditopic linear linker. Unlike the main body of COF frameworks reported to-date, which consists of higher-symmetry 2D topologies, the unconventional layered brick-wall topology have only been proposed but never been realized experimentally. The brick-wall structure was characterized by powder X-ray diffraction analysis, FT-IR, solid state13C NMR spectroscopy, nitrogen, and carbon oxide adsorption-desorption measurements as well as theoretical simulations. Our present work opens the door to the design of novel 2D COFs and will broaden the scope of emerging COF materials.

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