Molecular Weaving of Covalent Organic Frameworks for Adaptive Guest Inclusion

Yuzhong Liu; Yanhang Ma; Jingjing Yang; Christian S Diercks; Nobumichi Tamura; Fangying Jin; Omar M Yaghi

doi:10.1021/jacs.8b08949

Molecular Weaving of Covalent Organic Frameworks for Adaptive Guest Inclusion

J Am Chem Soc. 2018 Nov 28;140(47):16015-16019. doi: 10.1021/jacs.8b08949. Epub 2018 Oct 4.

Authors

Yuzhong Liu¹, Yanhang Ma², Jingjing Yang¹, Christian S Diercks¹, Nobumichi Tamura³, Fangying Jin¹, Omar M Yaghi¹

Affiliations

¹ Department of Chemistry, University of California-Berkeley, and Materials Sciences Division , Lawrence Berkeley National Laboratory, Kavli Energy NanoSciences Institute , Berkeley , California 94720 , United States.
² School of Physical Science and Technology , Shanghai Tech University , Shanghai 201210 , China.
³ Advanced Light Source , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States.

PMID: 30272444
DOI: 10.1021/jacs.8b08949

Abstract

The synthesis of new isoreticular non-interpenetrated woven covalent organic frameworks (COFs) was achieved by linking aldehyde-functionalized copper(I) bisphenanthroline complexes with benzidine linkers in the presence of a bulky anion, diphenylphosphinate (PO₂Ph₂^-) to give metalated COF-506-Cu and, upon removal of copper(I), the demetalated COF-506. The structures of these COFs were determined by a combination of powder X-ray diffraction and electron microscopy techniques. Guest-accessibility to the pores of the two frameworks was examined by vapor and dye inclusion studies and compared to the already reported doubly-interpenetrated COF-505-Cu. Remarkably, COF-506 was found to take up guest molecules that exceed the size of the COF-506-Cu pores, thus giving credence to the notion of a novel mode of motional dynamics in solids we term 'adaptive inclusion'.

Publication types

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