Ultrahigh phase transition temperature in a metal–halide perovskite-type material containing unprecedented hydrogen bonding interactions
| Autor: | Wei-Qiang Liao, Ji-Xing Gao, Xiu-Ni Hua, Xiao-Gang Chen, Peng-Fei Li, Guang-Quan Mei |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Phase transition
Materials science 010405 organic chemistry Hydrogen bond Intermolecular force Crystal structure 010402 general chemistry 01 natural sciences 0104 chemical sciences Inorganic Chemistry Crystallography Differential scanning calorimetry Orthorhombic crystal system Monoclinic crystal system Perovskite (structure) |
| Zdroj: | Dalton Transactions. 48:6621-6626 |
| ISSN: | 1477-9234 1477-9226 |
| DOI: | 10.1039/c9dt00945k |
| Popis: | A novel organic-inorganic ABX3 perovskite-type material with specific hydrogen bonding interactions, N,N-dimethylethanolammonium trichlorocadmate ([DMEA]CdCl3), has been synthesized as a phase transition material. It is notable that the DMEA cations are arranged to form one-dimensional chains connected by hydrogen bonds at room temperature, which are very sparse in other perovskite-type compounds. The strong intermolecular interactions have made the phase transition temperature of the material reach up to 429 K, as confirmed by differential scanning calorimetry measurements, variable-temperature structural analyses, and dielectric measurements. The origin of the symmetry-breaking phase transition is associated with the motion or reorientation of the DMEA cations, accompanied by the crystal structures from orthorhombic Pnma to monoclinic P21/c with the temperature decreases. The finding of [DMEA]CdCl3 with unprecedented hydrogen bonding interactions has opened a new avenue to design novel phase transition materials with higher transition temperatures. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|