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Issue 38, 2017
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A room temperature reversible phase transition containing dielectric switching of a host–guest supramolecular metal–halide compound

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Abstract

Following our recent findings on dielectric materials, we synthesized a new host–guest supramolecular metal–halide compound, [(2-AMPD)(18-crown-6)]CuCl4 (1, 2-AMPD = 2-aminomethylpiperidinium). Systematic characterization techniques such as variable-temperature crystal structure analyses, differential scanning calorimetry (DSC) measurements, temperature-dependent dielectric measurements and powder X-ray diffraction (PXRD) measurements demonstrate that 1 undergoes a reversible phase transition at room temperature, accompanied by switchable dielectric responses and remarkable anisotropy along three different crystallographic axes. The structural phase transition mechanism is triggered by the order–disorder transition of the 18-crown-6 molecules. We believe that these findings might further promote the application of a host–guest inclusion compound in the field of switchable dielectric materials.

Graphical abstract: A room temperature reversible phase transition containing dielectric switching of a host–guest supramolecular metal–halide compound

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Article information


Submitted
18 Jul 2017
Accepted
31 Aug 2017
First published
31 Aug 2017

Dalton Trans., 2017,46, 12760-12765
Article type
Communication

A room temperature reversible phase transition containing dielectric switching of a host–guest supramolecular metal–halide compound

Y. Lu, X. Hua, W. Liao, J. Gao and Z. Yin, Dalton Trans., 2017, 46, 12760
DOI: 10.1039/C7DT02607B

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