A Cubic 3D Covalent Organic Framework with nbo Topology

Wang, Xue, Bahri, Mounib ORCID: 0000-0002-8336-9158, Fu, Zhiwei, Little, Marc A, Liu, Lunjie, Niu, Hongjun, Browning, Nigel D ORCID: 0000-0003-0491-251X, Chong, Samantha Y ORCID: 0000-0002-3095-875X, Chen, Linjiang, Ward, John W ORCID: 0000-0001-7186-6416
et al (show 1 more authors) (2021) A Cubic 3D Covalent Organic Framework with nbo Topology. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 143 (37). pp. 15011-15016.

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The synthesis of three-dimensional (3D) covalent organic frameworks (COFs) requires high-connectivity polyhedral building blocks or the controlled alignment of building blocks. Here, we use the latter strategy to assemble square-planar cobalt(II) phthalocyanine (PcCo) units into the <b>nbo</b> topology by using tetrahedral spiroborate (SPB) linkages that were chosen to provide the necessary 90° dihedral angles between neighboring PcCo units. This yields a porous 3D COF, <b>SPB-COF-DBA</b>, with a noninterpenetrated <b>nbo</b> topology. <b>SPB-COF-DBA</b> shows high crystallinity and long-range order, with 11 resolved diffraction peaks in the experimental powder X-ray diffraction (PXRD) pattern. This well-ordered crystal lattice can also be imaged by using high-resolution transmission electron microscopy (HR-TEM). <b>SPB-COF-DBA</b> has cubic pores and exhibits permanent porosity with a Brunauer-Emmett-Teller (BET) surface area of 1726 m<sup>2</sup> g<sup>-1</sup>.

Item Type: Article
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 04 Oct 2021 15:51
Last Modified: 18 Jan 2023 21:27
DOI: 10.1021/jacs.1c08351
Open Access URL: https://doi.org/10.1021/jacs.1c08351
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3139278