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; Osamu Terasaki; Omar M Yaghi

doi:10.1126/science.aad4011

Weaving of organic threads into a crystalline covalent organic framework

Science. 2016 Jan 22;351(6271):365-9. doi: 10.1126/science.aad4011.

Authors

Yuzhong Liu¹, Yanhang Ma², Yingbo Zhao¹, Xixi Sun¹, Felipe Gándara³, Hiroyasu Furukawa¹, Zheng Liu⁴, Hanyu Zhu⁵, Chenhui Zhu⁶, Kazutomo Suenaga⁴, Peter Oleynikov², Ahmad S Alshammari⁷, Xiang Zhang⁸, Osamu Terasaki⁹, Omar M Yaghi¹⁰

Affiliations

¹ Department of Chemistry, University of California, Berkeley, Materials Sciences Division, Lawrence Berkeley National Laboratory, and Kavli Energy NanoSciences Institute, Berkeley, CA 94720, USA.
² Department of Materials and Environmental Chemistry, Stockholm University, SE-10691 Stockholm, Sweden.
³ Department of New Architectures in Materials Chemistry, Materials Science Institute of Madrid, Consejo Superior de Investigaciones Científicas, Madrid 28049, Spain.
⁴ Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan.
⁵ NSF Nanoscale Science and Engineering Center (NSEC), University of California at Berkeley, 3112 Etcheverry Hall, Berkeley, CA 94720, USA.
⁶ Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
⁷ King Abdulaziz City of Science and Technology, Post Office Box 6086, Riyadh 11442, Saudi Arabia.
⁸ NSF Nanoscale Science and Engineering Center (NSEC), University of California at Berkeley, 3112 Etcheverry Hall, Berkeley, CA 94720, USA. Material Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA.
⁹ Department of Materials and Environmental Chemistry, Stockholm University, SE-10691 Stockholm, Sweden. School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China. terasaki@mmk.su.se yaghi@berkeley.edu.
¹⁰ Department of Chemistry, University of California, Berkeley, Materials Sciences Division, Lawrence Berkeley National Laboratory, and Kavli Energy NanoSciences Institute, Berkeley, CA 94720, USA. King Abdulaziz City of Science and Technology, Post Office Box 6086, Riyadh 11442, Saudi Arabia. terasaki@mmk.su.se yaghi@berkeley.edu.

PMID: 26798010
DOI: 10.1126/science.aad4011

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.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.