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Article Dans Une Revue Journal of the American Chemical Society Année : 2017

Postsynthetic Approach for the Rational Design of Chiral Ferroelectric Metal–Organic Frameworks

Résumé

Ferroelectrics (FEs) are materials of paramount importance with a wide diversity of applications. Herein, we propose a postsynthetic methodology for the smart implementation of ferroelectricity in chiral metal−organic frameworks (MOFs): following a single-crystal to single-crystal cation metathesis, the Ca2+ counterions of a preformed chiral MOF of formula Ca6II{CuII24[(S,S)-hismox]12(OH2)3}·212H2O (1), where hismox is a chiral ligand derived from the natural amino acid l-histidine, are replaced by CH3NH3+. The resulting compound, (CH3NH3)12{CuII24[(S,S)-hismox]12(OH2)3}·178H2O (2), retains the polar space group of 1 and is ferroelectric below 260 K. These results open a new synthetic avenue to enlarge the limited number of FE MOFs.
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Dates et versions

hal-01589785 , version 1 (19-09-2017)

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Marta Mon, Jesús Ferrando-Soria, Michel Verdaguer, Cyrille Train, Charles Paillard, et al.. Postsynthetic Approach for the Rational Design of Chiral Ferroelectric Metal–Organic Frameworks. Journal of the American Chemical Society, 2017, 139 (24), pp.8098-8101. ⟨10.1021/jacs.7b03633⟩. ⟨hal-01589785⟩
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