Pressure-induced amorphization of a dense coordination polymer and its impact on proton conductivity

Daiki Umeyama; Satoshi Horike; Cedric Tassel; Hiroshi Kageyama; Yuji Higo; Keisuke Hagi; Naoki Ogiwara; Susumu Kitagawa

doi:10.1063/1.4898806

journal article·2014-12-01Open access

Pressure-induced amorphization of a dense coordination polymer and its impact on proton conductivity

Daiki Umeyama, Satoshi Horike, Cedric Tassel, Hiroshi Kageyama, Yuji Higo, Keisuke Hagi, Naoki Ogiwara, Susumu Kitagawa

APL Materials· Volume 2· Issue 12

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Source abstract

Abstract

The proton conductivity of a dense coordination polymer (CP) was investigated under high-pressure conditions. Impedance measurements under high pressures revealed that the proton conductivity of the CP decreased more than 1000-fold at pressures of 3–7 GPa and that the activation energy for proton conduction almost doubled compared with that at ambient pressure. A synchrotron X-ray study under high pressure identified the amorphization process of the CP during compression, which rationally explains the decrease in conductivity and increase in activation energy. This phenomenon is categorized as reversible pressure-induced amorphization of a dense CP and is regarded as a demonstration of the coupling of the mechanical and electrical properties of a CP.

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Research context

Polymers

OpenAlex topics: Metal-Organic Frameworks: Synthesis and Applications · Organic and Molecular Conductors Research · Solid-state spectroscopy and crystallography

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University 1 , Katsura, Nishikyo-ku, Kyoto 615-8510, Japan

PRESTO, Japan Science and Technology Agency 2 , 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan

Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University 3 , Katsura, Nishikyo-ku, Kyoto 615-8510, Japan

The Hakubi Center for Advanced Research, Kyoto University 4 , Yoshida, Sakyo-ku, Kyoto 606-8501, Japan

Japan Synchrotron Radiation Research Institute 5 , Hyogo 679-5198, Japan

Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University 6 , Yoshida, Sakyo-ku, Kyoto 606-8501, Japan

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