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Amorphous–amorphous transition in a porous coordination polymer

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Abstract

The amorphous state plays a key role in porous coordination polymer and metal–organic framework phase transitions. We investigate a crystalline-to-amorphous-to-amorphous-to-crystalline (CAAC) phase transition in a Zn based coordination polymer, by X-ray absorption fine structure (XAFS) and X-ray pair distribution function (PDF) analysis. We show that the system shows two distinct amorphous phases upon heating. The first involves a reversible transition to a desolvated form of the original network, followed by an irreversible transition to an intermediate phase which has elongated Zn–I bonds.

Graphical abstract: Amorphous–amorphous transition in a porous coordination polymer

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Publication details

The article was received on 29 Apr 2017, accepted on 08 Jun 2017 and first published on 08 Jun 2017


Article type: Communication
DOI: 10.1039/C7CC03333H
Citation: Chem. Commun., 2017, Advance Article
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    Amorphous–amorphous transition in a porous coordination polymer

    H. Ohtsu, T. D. Bennett, T. Kojima, D. A. Keen, Y. Niwa and M. Kawano, Chem. Commun., 2017, Advance Article , DOI: 10.1039/C7CC03333H

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