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J Am Chem Soc. 2013 Jul 17;135(28):10214-7. doi: 10.1021/ja403449k. Epub 2013 Jul 5.

Ferroelectric switchable behavior through fast reversible de/adsorption of water spirals in a chiral 3D metal-organic framework.

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  • 1College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China.


A polar homochiral 3D MOF [{Co2(L)(bpe)(H2O)}ยท5H2O]n constructed with cobalt(II) and a new ligand N-(1,3-dicarboxy-5-benzyl)-carboxymethylglycine (H4L) accommodates ordered helical water streams in its helical grooves. It provides the first example of switchable ferroelectric and optical behavior through two-step reversible single-crystal to single-crystal transformation (SCSC) upon desorption/adsorption of water spirals and coordinated water molecules, respectively.

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