A room temperature reversible phase transition containing dielectric switching of a host–guest supramolecular metal–halide compound. Issue 38 (15th September 2017)

• Record Type: Journal Article
• Authors: Lu, Yang; Hua, Xiu-Ni; Liao, Wei-Qiang; Gao, Ji-Xing; Yin, Zi
• Is Part Of: Dalton transactions. Volume 46:Issue 38(2017)
• Page Start: 12760
• Page End: 12765
• Publication Date: 2017-09-15
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c7dt02607b
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : A host–guest supramolecular metal–halide compound undergoes a reversible phase transition, accompanied by distinct dielectric switching. Abstract : Following our recent findings on dielectric materials, we synthesized a new host–guest supramolecular metal–halide compound, [(2-AMPD)(18-crown-6)]CuCl4 (1, 2-AMPD = 2-aminomethylpiperidinium). Systematic characterization techniques such as variable-temperature crystal structure analyses, differential scanning calorimetry (DSC) measurements, temperature-dependent dielectric measurements and powder X-ray diffraction (PXRD) measurements demonstrate that1 undergoes a reversible phase transition at room temperature, accompanied by switchable dielectric responses and remarkable anisotropy along three different crystallographic axes. The structural phase transition mechanism is triggered by the order–disorder transition of the 18-crown-6 molecules. We believe that these findings might further promote the application of a host–guest inclusion compound in the field of switchable dielectric materials.