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. 2018 Jul 3;9:2600. doi: 10.1038/s41467-018-04979-y

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© The Author(s) 2018

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 — Schematic of the imine to thiazole transformation in the TTI-COF. a Schematic of the reaction of an amine and an aldehyde (1) to form an imine (2), then a thioamide as an intermediate (3) by the action of elemental sulfur, and finally a thiazole (4). b Schematic drawing of the sulfurization reaction of the TTI-COF to form the thiazole-based TTT-COF. c Space filling model of one pore of the TTI-COF (left) and the TTT-COF (right)