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. 2020 Nov 3;11:5561. doi: 10.1038/s41467-020-18844-4

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — a Schematic illustration for the synthesis of 3D-Sp-COF (@m h is on behalf of the reaction time). b The experimental PXRD profiles of 3D-Sp-COF (black curve) compared with theoretical PXRD calculated from crystal models with different degrees of interpenetration. c Unit cell, top view, and side view of the cell of 3D-Sp-COF (dia-c7): C, gray; N, blue; H, white.