Two-step thermotropic phase transition and dielectric relaxation in 1D supramolecular lead iodide perovskite [NH<sub>4</sub>@18-crown ether]PbI<sub>3</sub>
Yuxin Xie, Guo‐Jun Yuan, Jibin Miao, Ye‐Ting Luan, Li Li, Hong Chen, Xiao‐Ming Ren
Abstract
The supramolecular crystal, {[NH 4 (18-crown-6)]PbI 3 } ∞ , experiences disorder–order transformation between LTP and ITP, both disorder–order and symmetry-broken phase transition between ITP and HTP.
Topics & Concepts
Thermotropic crystalCrystallographyDifferential scanning calorimetryPerovskite (structure)Crown etherSupramolecular chemistryPhase transitionMaterials sciencePowder diffractionIodideDielectricMoleculePhase (matter)ChemistryCrystal structureInorganic chemistryIonOrganic chemistryThermodynamicsPhysicsOptoelectronicsQuantum mechanicsLiquid crystallinePerovskite Materials and ApplicationsSolid-state spectroscopy and crystallographyCrystal Structures and Properties