Room-temperature dielectric switching in a host–guest crown ether inclusion complex

Abstract

Host-guest compounds based on crown ether are promising candidates for switchable dielectric materials, holding great potential for the fields of sensing, information storage, and electronics. However, their phase transition temperature...

Solvent dependence of crystal structure and dielectric relaxation in ferromagnetic [MnCr(oxalate)3]− salt

“…3a, there is no dielectric anomaly for 1 ·CH 3 OH except for the increasing dielectric permittivity with increasing temperature, similar to some reported supramolecular rotors compounds. 29 In contrast, frequency-dependent shoulder peaks were observed in crystal 1 (Fig. 3b).…”

A ferroelastic molecular rotator [(Me2N(CH2)2NH3)(18-crown-6)]triflate with dual dielectric switches

“…[25][26][27][28][29][30] This structure is considered as a promising template for the construction ferroelastic phase transition and switchable materials, because it facilitates the dynamic motions of building blocks. 27,[31][32][33][34][35][36] So far, crown ether-based ferroelastic molecular rotators are rarely reported. [(cyclopentylaminium)(18-crown-6)]ClO 4 37 and [(4fluorobenzylammonium)(18crown-6)]ClO 4…”

“…25–30 This structure is considered as a promising template for the construction ferroelastic phase transition and switchable materials, because it facilitates the dynamic motions of building blocks. 27,31–36 So far, crown ether-based ferroelastic molecular rotators are rarely reported. [(cyclopentylaminium)(18-crown-6)]ClO 4 37 and [(4-fluorobenzylammonium)(18crown-6)]ClO 4 33 were reported their structural transition types belong to the ferroelastic species defined by Aizu, but no further evidence for ferroelasticity is available.…”

High-Tp-triggered phase transition exhibiting switchable dielectric–thermal responses and long photoluminescence lifetime in a novel inclusion luminophor

“…, but can also be quickly and flexibly transformed into small, lightweight, and expandable electronic materials because of which have been pursued by a wide range of researchers. 1–7 Molecular phase-transition materials are principally divided into host–guest inclusion compounds, 8–10 anion–cation organic salts, 11,12 and perovskite/perovskite-like compounds. 13–15 Among them, the host–guest inclusions represented by organic ammonium–crown ether families are a class of greatly prospective ferroelectric–dielectric materials with potential applications in various fields, e.g.…”

“…, switchable dielectric devices, sensors, digital processing, luminescence, molecular catalysis, molecular recognition and photoelectric technology, and have aroused growing research interest in recent years. 10,16–20…”