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      A dynamic and multi-responsive porous flexible metal–organic material

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          Abstract

          Stimuli responsive materials (SRMs) respond to environmental changes through chemical and/or structural transformations that can be triggered by interactions at solid-gas or solid-liquid interfaces, light, pressure or temperature. SRMs span compositions as diverse as organic polymers and porous inorganic solids such as zeolites. Metal–organic materials (MOMs), sustained by metal nodes and organic linker ligands are of special interest as SRMs. SR-MOMs have thus far tended to exhibit only one type of transformation, e.g. breathing, in response to one stimulus, e.g. pressure change. We report [Zn 2(4,4′-biphenyldicarboxylate) 2(4,4′-bis(4-pyridyl)biphenyl)] n, an SR-MOM, which exhibits six distinct phases and four types of structural transformation in response to various stimuli. The observed structural transformations, breathing, structural isomerism, shape memory effect, and change in the level of interpenetration, are previously known individually but have not yet been reported to exist collectively in the same compound. The multi-dynamic nature of this SR-MOM is mainly characterised by using in-situ techniques.

          Abstract

          Stimuli-responsive porous materials are attractive for a range of applications, but each material typically exhibits only one type of transformation. Here, the authors report on a metal–organic material that exhibits six distinct phases as a result of four types of structural transformation in response to different stimuli.

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          Most cited references 35

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          Functional Porous Coordination Polymers

          The chemistry of the coordination polymers has in recent years advanced extensively, affording various architectures, which are constructed from a variety of molecular building blocks with different interactions between them. The next challenge is the chemical and physical functionalization of these architectures, through the porous properties of the frameworks. This review concentrates on three aspects of coordination polymers: 1). the use of crystal engineering to construct porous frameworks from connectors and linkers ("nanospace engineering"), 2). characterizing and cataloging the porous properties by functions for storage, exchange, separation, etc., and 3). the next generation of porous functions based on dynamic crystal transformations caused by guest molecules or physical stimuli. Our aim is to present the state of the art chemistry and physics of and in the micropores of porous coordination polymers.
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            From Molecules to Crystal Engineering:  Supramolecular Isomerism and Polymorphism in Network Solids

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              Interpenetrating Nets: Ordered, Periodic Entanglement

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                Author and article information

                Contributors
                Michael.Zaworotko@ul.ie
                Journal
                Nat Commun
                Nat Commun
                Nature Communications
                Nature Publishing Group UK (London )
                2041-1723
                6 August 2018
                6 August 2018
                2018
                : 9
                Affiliations
                ISNI 0000 0004 1936 9692, GRID grid.10049.3c, Department of Chemical Sciences, Bernal Institute, , University of Limerick, ; Limerick, V94 T9PX Ireland
                Article
                5503
                10.1038/s41467-018-05503-y
                6079025
                © The Author(s) 2018

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

                Funding
                Funded by: FundRef https://doi.org/10.13039/501100001602, Science Foundation Ireland (SFI);
                Award ID: 13/RP/B2549
                Award ID: 16/IA/4624
                Award Recipient :
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