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Title: Reversible Switching between Highly Porous and Nonporous Phases of an Interpenetrated Diamondoid Coordination Network That Exhibits Gate‐Opening at Methane Storage Pressures
Abstract

Herein, we report that a new flexible coordination network,NiL2(L=4‐(4‐pyridyl)‐biphenyl‐4‐carboxylic acid), with diamondoid topology switches between non‐porous (closed) and several porous (open) phases at specific CO2and CH4pressures. These phases are manifested by multi‐step low‐pressure isotherms for CO2or a single‐step high‐pressure isotherm for CH4. The potential methane working capacity ofNiL2approaches that of compressed natural gas but at much lower pressures. The guest‐induced phase transitions ofNiL2were studied by single‐crystal XRD, in situ variable pressure powder XRD, synchrotron powder XRD, pressure‐gradient differential scanning calorimetry (P‐DSC), and molecular modeling. The detailed structural information provides insight into the extreme flexibility ofNiL2. Specifically, the extended linker ligand,L, undergoes ligand contortion and interactions between interpenetrated networks or sorbate–sorbent interactions enable the observed switching.

 
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NSF-PAR ID:
10059301
Author(s) / Creator(s):
 ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  
Publisher / Repository:
Wiley Blackwell (John Wiley & Sons)
Date Published:
Journal Name:
Angewandte Chemie International Edition
Volume:
57
Issue:
20
ISSN:
1433-7851
Page Range / eLocation ID:
p. 5684-5689
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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