Weaving of organic threads into a crystalline covalent organic framework.
In: Science, Jg. 351 (2016-01-22), Heft 6271, S. 365-369
Online
academicJournal
Zugriff:
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. [ABSTRACT FROM AUTHOR]
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Weaving of organic threads into a crystalline covalent organic framework.
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Autor/in / Beteiligte Person: | Liu, Yuzhong ; Ma, Yanhang ; Zhao, Yingbo ; Sun, Xixi ; Gándara, Felipe ; Furukawa, Hiroyasu ; Liu, Zheng ; Zhu, Hanyu ; Zhu, Chenhui ; Suenaga, Kazutomo ; Oleynikov, Peter ; Alshammari, Ahmad S. ; Zhang, Xiang ; Terasaki, Osamu ; Yaghi, Omar M. |
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Zeitschrift: | Science, Jg. 351 (2016-01-22), Heft 6271, S. 365-369 |
Veröffentlichung: | 2016 |
Medientyp: | academicJournal |
ISSN: | 0036-8075 (print) |
DOI: | 10.1126/science.aad4011 |
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