| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Akutagawa, Tomoyuki
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (4/4 displayed)
- 2023Dual-radical-based molecular anisotropy and synergy effect of semi-conductivity and valence tautomerization in a photoswitchable coordination polymercitations
- 2020Doping of metal-free molecular perovskite with hexamethylenetetramine to create non-centrosymmetric defectscitations
- 2019Ferroelectric Behavior of a Hexamethylenetetramine‐Based Molecular Perovskite Structurecitations
- 2017Synthesis of ordered carbonaceous frameworks from organic crystalscitations
Places of action
| Organizations | Location | People |
|---|
article
Ferroelectric Behavior of a Hexamethylenetetramine‐Based Molecular Perovskite Structure
Abstract
<jats:title>Abstract</jats:title><jats:p>We report the development of a molecular ferroelectric material inspired by the hexamethylenetetramine (hmta) non‐centrosymmetric molecular rotator. The bromide salt of diprotonated hmta (hmtaH<jats:sub>2</jats:sub>) crystalized as (hmtaH<jats:sub>2</jats:sub>)(NH<jats:sub>4</jats:sub>)Br<jats:sub>3</jats:sub> in a metal‐free ABX<jats:sub>3</jats:sub> perovskite‐type structure, in which the A and B sites are occupied by hmtaH<jats:sub>2</jats:sub><jats:sup>2+</jats:sup> and ammonium cations, respectively. The compound crystallized in the <jats:italic>P</jats:italic>ma2 polar space group. A distorted polar perovskite structure formed owing to the distortion of {(NH<jats:sub>4</jats:sub>)Br<jats:sub>6</jats:sub>} octahedrons that are stabilized through the formation of NH⋅⋅⋅Br hydrogen bonds and the orientational ordering of positive charges on the non‐centrosymmetric hmtaH<jats:sub>2</jats:sub> molecules. This spontaneous polarization exhibited ferroelectric behavior with a nominally high Curie temperature (>400 K), in which the electrical switching of polarization originates from the rotation of the hmtaH<jats:sub>2</jats:sub> unit.</jats:p>