Weaving of organic threads into a crystalline covalent organic framework.
Yuzhong Liu,Yanhang Ma,Yingbo Zhao,Xixi Sun,Felipe Gándara,Hiroyasu Furukawa,Zheng Liu,Hanyu Zhu,Chenhui Zhu,Kazutomo Suenaga,Peter Oleynikov,Ahmad S. Alshammari,Xiang Zhang,Xiang Zhang,Osamu Terasaki,Osamu Terasaki,Omar M. Yaghi +16 more
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TLDR
A three-dimensional covalent organic framework constructed from helical organic threads, designed to be mutually weaving at regular intervals, has been synthesized by imine condensation reactions of aldehyde functionalized copper(I)-bisphenanthroline tetrafluoroborate, Cu(PDB)2(BF4), and benzidine (BZ).Abstract:
A three-dimensional covalent organic framework (COF-505) constructed from helical organic threads, designed to be mutually weaving at regular intervals, has been synthesized by imine condensation reactions of aldehyde functionalized copper(I)-bisphenanthroline tetrafluoroborate, Cu(PDB)2(BF4), and benzidine (BZ). The copper centers are topologically independent of the weaving within the COF structure and serve as templates for bringing the threads into a woven pattern rather than the more commonly observed parallel arrangement. The copper(I) ions can be reversibly removed and added without loss of the COF structure, for which a tenfold increase in elasticity accompanies its demetalation. The threads in COF-505 have many degrees of freedom for enormous deviations to take place between them, throughout the material, without undoing the weaving of the overall structure.read more
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The atom, the molecule, and the covalent organic framework
TL;DR: The ability to design COFs and to adjust their pore metrics using the principles of reticular synthesis has given rise to frameworks with ultralow densities, which has resulted in the first implementation of the concept of molecular weaving.
Journal ArticleDOI
Covalent Organic Frameworks: Design, Synthesis, and Functions.
Keyu Geng,Ting He,Ruoyang Liu,Sasanka Dalapati,Ke Tian Tan,Zhongping Li,Shanshan Tao,Yifan Gong,Qiuhong Jiang,Donglin Jiang +9 more
TL;DR: A comprehensive review of the COF field is targeted, providing a historic overview of the chemistry, the advances in the topology design and synthetic reactions, illustrate the structural features and diversities, and scrutinize the development and potential of various functions through elucidating structure-function correlations.
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Covalent organic frameworks: a materials platform for structural and functional designs
TL;DR: Covalent organic frameworks (COFs) are a class of crystalline porous polymer that allows the atomically precise integration of organic units into extended structures with periodic skeletons and ordered nanopores as mentioned in this paper.
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Covalent organic frameworks based on Schiff-base chemistry: synthesis, properties and potential applications
TL;DR: This critical review article summarizes the current state-of-the-art on the design principles and synthetic strategies toward COFs based on Schiff-base chemistry, collects and rationalizes their physicochemical properties, as well as aims to provide perspectives of potential applications which are at the forefront of research in materials science.
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Porous Organic Materials: Strategic Design and Structure–Function Correlation
TL;DR: This review encompasses the recent significant breakthroughs and the conventional functions and practices in the field of porous Organic materials to find useful applications and imparts a comprehensive understanding of the strategic evolution of the design and synthetic approaches of porous organic materials with tunable characteristics.
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