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Issue 8, 2017
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Switchings of dielectric constant, second harmonic generation and polarization in a polar hybrid cyanometallate crystal

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Abstract

Compounds showing multi-switchable properties represent a type of new multi-stimuli responsive material that would find some promising applications. In this study, an organic–inorganic hybrid crystal (TA)2{(H3O)[Co(CN)6]} (1, TA = thiazolium) with a two-dimensional network constructed by the [Co(CN)6]3− anions and the hydronium cations via hydrogen-bonds was synthesized. 1 undergoes a structural phase transition between two polar phases at about 230 K due to the order–disorder transition of the TA cation. Detailed characterization, including variable-temperature structural analyses, differential scanning calorimetry (DSC), second-harmonic generation (SHG), dielectric and pyroelectric measurements, indicate that the local structural changes trigger multi-switchable properties of the dielectric constant, SHG and polarization. The discovery of multi-switchable responses based on polar compounds might provide a good strategy to search for new promising materials for smart switches.

Graphical abstract: Switchings of dielectric constant, second harmonic generation and polarization in a polar hybrid cyanometallate crystal

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Publication details

The article was received on 17 Dec 2016, accepted on 18 Mar 2017 and first published on 20 Mar 2017


Article type: Paper
DOI: 10.1039/C6NJ03973A
Citation: New J. Chem., 2017,41, 3211-3216
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    Switchings of dielectric constant, second harmonic generation and polarization in a polar hybrid cyanometallate crystal

    Y. Liu, D. Wu, Z. Wang and Y. Zhang, New J. Chem., 2017, 41, 3211
    DOI: 10.1039/C6NJ03973A

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