Single-Crystal Structure of a Covalent Organic Framework

Journal Article · Wed Nov 06 00:00:00 EST 2013 · Journal of the American Chemical Society

DOI:https://doi.org/10.1021/ja409033p· OSTI ID:1211168

Zhang, YB; Su, J; Furukawa, H; Yun, YF; Gandara, F; Duong, A; Zou, XD; Yaghi, OM

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 degrees 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 degrees 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.

• Sponsoring Organization: USDOE Advanced Research Projects Agency - Energy (ARPA-E)
• DOE Contract Number: DE-AR0000251
• OSTI ID: 1211168
• Journal Information: Journal of the American Chemical Society, Vol. 135, Issue 44; ISSN 0002-7863
• Country of Publication: United States
• Language: English