title: Single-crystal structure of a covalent organic framework.
abstract: The crystal structure of a new covalent organic framework, termed COF-320, is determined by single-crystal 3D electron diffraction using the rotation electron diffraction (RED) method for data collection. The COF crystals are prepared by an imine condensation of tetra-(4-anilyl)methane and 4,4'-biphenyldialdehyde in 1,4-dioxane at 120 °C to produce a highly porous 9-fold interwoven diamond net. COF-320 exhibits permanent porosity with a Langmuir surface area of 2400 m(2)/g and a methane total uptake of 15.0 wt % (176 cm(3)/cm(3)) at 25 °C and 80 bar. The successful determination of the structure of COF-320 directly from single-crystal samples is an important advance in the development of COF chemistry.
authors.affiliation: Department of Chemistry, University of California , and Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors.forename: Yue-Biao
authors.initials: YB
authors.lastname: Zhang
authors.forename: Jie
authors.initials: J
authors.lastname: Su
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Furukawa
authors.forename: Yifeng
authors.initials: Y
authors.lastname: Yun
authors.forename: Felipe
authors.initials: F
authors.lastname: Gándara
authors.forename: Adam
authors.initials: A
authors.lastname: Duong
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Zou
authors.forename: Omar M
authors.initials: OM
authors.lastname: Yaghi