Carbon dioxide capture and efficient fixation in a dynamic porous coordination polymer

Pengyan Wu, Yang Li, Jia-Jia Zheng, Nobuhiko Hosono, Ken-ichi Otake, Jian Wang (), Yanhong Liu, Lingling Xia, Min Jiang, Shigeyoshi Sakaki and Susumu Kitagawa ()
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Pengyan Wu: Jiangsu Normal University
Yang Li: Jiangsu Normal University
Jia-Jia Zheng: Kyoto University, Yoshida Ushinomiya-cho
Nobuhiko Hosono: Kyoto University, Yoshida Ushinomiya-cho
Ken-ichi Otake: Kyoto University, Yoshida Ushinomiya-cho
Jian Wang: Jiangsu Normal University
Yanhong Liu: Jiangsu Normal University
Lingling Xia: Jiangsu Normal University
Min Jiang: Jiangsu Normal University
Shigeyoshi Sakaki: Kyoto University, Nishi-hiraki cho, Takano
Susumu Kitagawa: Kyoto University, Yoshida Ushinomiya-cho

Nature Communications, 2019, vol. 10, issue 1, 1-8

Abstract: Abstract Direct structural information of confined CO2 in a micropore is important for elucidating its specific binding or activation mechanism. However, weak gas-binding ability and/or poor sample crystallinity after guest exchange hindered the development of efficient materials for CO2 incorporation, activation and conversion. Here, we present a dynamic porous coordination polymer (PCP) material with local flexibility, in which the propeller-like ligands rotate to permit CO2 trapping. This process can be characterized by X-ray structural analysis. Owing to its high affinity towards CO2 and the confinement effect, the PCP exhibits high catalytic activity, rapid transformation dynamics, even high size selectivity to different substrates. Together with an excellent stability with turnover numbers (TON) of up to 39,000 per Zn1.5 cluster of catalyst after 10 cycles for CO2 cycloaddition to form value-added cyclic carbonates, these results demonstrate that such distinctive structure is responsible for visual CO2 capture and size-selective conversion.

Date: 2019
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DOI: 10.1038/s41467-019-12414-z

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