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Title: Crystal engineering on superpolyhedral building blocks in metal–organic frameworks applied in gas adsorption

Journal Article · · Acta Crystallographica. Section B, Structural Science, Crystal Engineering and Materials (Online)
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Two metal–organic frameworks [PCN-426(Ni) and PCN-427(Cu)] have been designed and synthesized to investigate the structure predictability using a SBB (supermolecular building blocks) approach. Tetratopic ligands featuring 120° angular carboxylate moieties were coordinated with a [Ni3(μ3-O)] cluster and a [Cu2O2] unit, respectively. As topologically predicted, 4-connected networks with square coordination adopted thenbonet for the Ni-MOF andssbnet for the Cu-MOF. PCN-426(Ni) was augmented with 12-connected octahedral SBBs, while PCN-427(Cu) was constructed with tetragonal open channels. After a CO2supercritical drying procedure, the PCN-426(Ni) possessed a Brunauer–Emmett–Teller (BET) surface area as high as 3935 m2g-1and impressively high N2 uptake of 1500 cm3 g-1. This work demonstrates the generalization of the SBB strategy, finding an alternative to inconvenient synthetic processes to achieve the desired structural features.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Gas Separations Relevant to Clean Energy Technologies (CGS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
DOE Contract Number:
SC0001015
OSTI ID:
1387386
Journal Information:
Acta Crystallographica. Section B, Structural Science, Crystal Engineering and Materials (Online), Vol. 71, Issue 6; Related Information: CGS partners with University of California, Berkeley; University of California, Davis; Lawrence Berkeley National Laboratory; University of Minnesota; National Energy Technology Laboratory; Texas A&M University; ISSN 2052-5206
Publisher:
International Union of Crystallography
Country of Publication:
United States
Language:
English

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Related Subjects

supermolecular building blocks
metal-organic frameworks
gas adsorption
polyhedra