A Supramolecular Ferroelectric Realized by Collective Proton Transfer | Zendy

Horiuchi Sachio | Zendy; Kumai Reiji | Zendy; Tokura Yoshinori | Zendy

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A Supramolecular Ferroelectric Realized by Collective Proton Transfer

Author(s) -

Horiuchi Sachio,

Kumai Reiji,

Tokura Yoshinori

Publication year - 2007

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.200700407

Subject(s) - ferroelectricity , hydrogen bond , supramolecular chemistry , proton , polar , molecule , chemical polarity , materials science , crystallography , electric field , chemistry , chemical physics , organic chemistry , physics , optoelectronics , dielectric , quantum mechanics , astronomy

Cooperative crystals : In ferroelectric cocrystals of iodanilic acid (see picture, orange) and 5,5′‐dimethyl‐2,2′‐bipyridine (green), the molecules are linked into polar chains by OH⋅⋅⋅N and N + H⋅⋅⋅O − hydrogen bonds. The application of a small electric field ( E ) effects a cooperative proton transfer across the hydrogen bonds, which is accompanied by a reversal of the polarity ( P ).

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