Abstract
Crystals of diisopropylammonium iodide are synthesized, grown and characterized.
Highlights
Crystals of diisopropylammonium iodide are synthesized, grown and characterized
In recent years there has been a significant breakthrough in small-molecular-weight organic single- or two-component polar materials which are characterized by excellent physical properties such as an extremely high value of the spontaneous polarization, a high Curie temperature, good thermal stability, mechanical flexibility, optical transparency and lightweight.[7,8,9,10,11,12,13,14,15,16,17]
Following the discovery of the diisopropylammonium ferroelectrics, it seems obvious that searching for new polar compounds was extended to an iodide analog, [i-(C3H7)2NH2+][I−], (DIPAI) whose dielectric response resembles those obtained for chloride or bromide analogs
Summary
Phase sequence in diisopropylammonium iodide: avoided ferroelectricity by the appearance of a reconstructed phase†Cite this: Inorg. Crystals of diisopropylammonium iodide are synthesized, grown and characterized. The most spectacular example is the wellknown croconic acid which belongs to the group of singlecomponent hydrogen-bonded ferroelectrics and possesses as high a spontaneous polarization as about 21 μC cm−2.7. The most spectacular examples of such type of compounds appeared to be simple organic derivatives of diisopropylammonium chloride[18] (DIPAC) and diisopropylammonium bromide (DIPAB),[19,20] both characterized by the highest Curie temperature (Tc) among organic ferroelectrics. Following the discovery of the diisopropylammonium ferroelectrics, it seems obvious that searching for new polar compounds was extended to an iodide analog, [i-(C3H7)2NH2+][I−], (DIPAI) whose dielectric response resembles those obtained for chloride or bromide analogs.
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