Volume 59, Issue 36 pp. 15517-15521
Communication

Structural-Deformation-Energy-Modulation Strategy in a Soft Porous Coordination Polymer with an Interpenetrated Framework

Dr. Yifan Gu

Dr. Yifan Gu

Institute for Integrated Cell-Material Sciences, Kyoto University Institute for Advanced Study, Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto, 606-8501 Japan

College of Environmental Science and Engineering, Shanghai Institute of Pollution Control and Ecological Security, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Siping Rd 1239, 200092 Shanghai, China

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Prof. Jia-Jia Zheng

Prof. Jia-Jia Zheng

Institute for Integrated Cell-Material Sciences, Kyoto University Institute for Advanced Study, Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto, 606-8501 Japan

Fukui Institute for Fundamental Chemistry, Kyoto University, Takano Nishihiraki-cho 34-4, Sakyo-ku, Kyoto, 606-8103 Japan

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Prof. Ken-ichi Otake

Prof. Ken-ichi Otake

Institute for Integrated Cell-Material Sciences, Kyoto University Institute for Advanced Study, Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto, 606-8501 Japan

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Prof. Kunihisa Sugimoto

Prof. Kunihisa Sugimoto

Institute for Integrated Cell-Material Sciences, Kyoto University Institute for Advanced Study, Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto, 606-8501 Japan

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Prof. Nobuhiko Hosono

Prof. Nobuhiko Hosono

Institute for Integrated Cell-Material Sciences, Kyoto University Institute for Advanced Study, Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto, 606-8501 Japan

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Prof. Shigeyoshi Sakaki

Prof. Shigeyoshi Sakaki

Fukui Institute for Fundamental Chemistry, Kyoto University, Takano Nishihiraki-cho 34-4, Sakyo-ku, Kyoto, 606-8103 Japan

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Prof. Fengting Li

Corresponding Author

Prof. Fengting Li

College of Environmental Science and Engineering, Shanghai Institute of Pollution Control and Ecological Security, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Siping Rd 1239, 200092 Shanghai, China

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Prof. Susumu Kitagawa

Corresponding Author

Prof. Susumu Kitagawa

Institute for Integrated Cell-Material Sciences, Kyoto University Institute for Advanced Study, Kyoto University, Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto, 606-8501 Japan

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First published: 01 April 2020
Citations: 48

Graphical Abstract

Easy PCPs: The competitive relationship between the structural deformation energy (Edef) of soft PCPs and guest interactions is key for their selective guest-triggered structural-transformation behavior. The flexibility of PCPs can be well controlled by modulating Edef to change the adsorption-energy landscape of guests for precise molecular recognition.

Abstract

To achieve unique molecular-recognition patterns, a rational control of the flexibility of porous coordination polymers (PCPs) is highly sought, but it remains elusive. From a thermodynamic perspective, the competitive relationship between the structural deformation energy (Edef) of soft PCPs and the guest interaction is key for selective a guest-triggered structural-transformation behavior. Therefore, it is vital to investigate and control Edef to regulate this competition for flexibility control. Driven by these theoretical insights, we demonstrate an Edef-modulation strategy via encoding inter-framework hydrogen bonds into a soft PCP with an interpenetrated structure. As a proof of this concept, the enhanced Edef of PCP enables a selective gate-opening behavior toward CHCl3 over CH2Cl2 by changing the adsorption-energy landscape of the compounds. This study provides a new direction for the design of functional soft porous materials.

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