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Reversible Switching between Highly Porous and Nonporous Phases of an Interpenetrated Diamondoid Coordination Network That Exhibits Gate‐Opening at Methane Storage Pressures
Author(s) -
Yang QingYuan,
Lama Prem,
Sen Susan,
Lusi Matteo,
Chen KaiJie,
Gao WenYang,
Shivanna Mohana,
Pham Tony,
Hosono Nobuhiko,
Kusaka Shinpei,
Perry John J.,
Ma Shengqian,
Space Brian,
Barbour Leonard J.,
Kitagawa Susumu,
Zaworotko Michael J.
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201800820
Subject(s) - diamondoid , differential scanning calorimetry , methane , materials science , porosity , porous medium , ligand (biochemistry) , chemical engineering , crystallography , chemistry , molecule , thermodynamics , composite material , organic chemistry , biochemistry , physics , receptor , engineering
Abstract Herein, we report that a new flexible coordination network, NiL 2 (L=4‐(4‐pyridyl)‐biphenyl‐4‐carboxylic acid), with diamondoid topology switches between non‐porous (closed) and several porous (open) phases at specific CO 2 and CH 4 pressures. These phases are manifested by multi‐step low‐pressure isotherms for CO 2 or a single‐step high‐pressure isotherm for CH 4 . The potential methane working capacity of NiL 2 approaches that of compressed natural gas but at much lower pressures. The guest‐induced phase transitions of NiL 2 were 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 of NiL 2 . Specifically, the extended linker ligand, L , undergoes ligand contortion and interactions between interpenetrated networks or sorbate–sorbent interactions enable the observed switching.