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Reversible switching between highly porous and non-porous phases of an interpenetrated diamondoid coordination network that exhibits gate-opening at methane storage pressures
Date
2018
Abstract
Herein, we report that a new flexible coordination network, NiL2 (L=4â (4â pyridyl)â biphenylâ 4â carboxylic acid), with diamondoid topology switches between nonâ porous (closed) and several porous (open) phases at specific CO2 and CH4 pressures. These phases are manifested by multiâ step lowâ pressure isotherms for CO2 or a singleâ step highâ pressure isotherm for CH4. The potential methane working capacity of NiL2 approaches that of compressed natural gas but at much lower pressures. The guestâ induced phase transitions of NiL2 were studied by singleâ crystal XRD, in situ variable pressure powder XRD, synchrotron powder XRD, pressureâ gradient differential scanning calorimetry (Pâ DSC), and molecular modeling. The detailed structural information provides insight into the extreme flexibility of NiL2. Specifically, the extended linker ligand, L, undergoes ligand contortion and interactions between interpenetrated networks or sorbateâ sorbent interactions enable the observed switching.
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Description
peer-reviewed
Publisher
John Wiley & Sons, Inc.
Citation
Angewandte Chemie;54, pp. 7042-7045
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Yang_2018_Reversible.pdf
Adobe PDF, 1.47 MB
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Funding Information
Science Foundation Ireland (SFI), National Science Foundation, Japan Society for the Promotion of Science, Japan Science and Technology Agency