Molecular Ferroelectric Piperidine‐4‐ylmethanaminium Perchlorate with Superior Switchable Dielectric Properties. Issue 10 (8th March 2019)

• Record Type: Journal Article
• Authors: Gan, Xuecheng; Tang, Zheng; Wang, Yan; Zhang, Wenjun; Sun, Xiaofan; Wu, YiZhang; Gao, Zhangran; Cai, Hong‐Ling; Wu, X. S.
• Is Part Of: ChemistrySelect. Volume 4:Issue 10(2019)
• Page Start: 2903
• Page End: 2907
• Publication Date: 2019-03-08
• Subjects: ferroelectric -- piperidine-4-ylmethanaminium -- switchable dielectric -- phase transition -- hysteresis loop; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201900081
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: A new piperidyl‐based molecular ferroelectric piperidine‐4‐ylmethanaminium perchlorate (compound 1) has been successfully synthesized, which undergoes a reversible phase transition around Tc = 258.8 K. The spontaneous polarization of compound 1 is about 0.63 μC/cm 2 and coercive field as small as 1.14 kV/cm at 192 K. The variable‐temperature single‐crystal X‐ray diffraction reveals that the space group transforms from a polar space group of P21 at 173 K to a centrosymmetric space group of P21 21 21 at 293 K. Especially, the dielectric anomaly at the phase transition temperature increases more than 4 times, which indicates potential applications in switchable dielectric devices. Abstract : The molecular ferroelectric piperidine‐4‐ylmethanaminium perchlorate (compound 1) with superior switchable dielectric properties, which can be an underlying candidate for switchable dielectric devices. The spontaneous polarization of compound 1 is about 0.63 μC/cm 2 and coercive field as small as 1.14 kV/cm at 192 K. The variable‐temperature single‐crystal X‐ray diffraction reveals that the space group transforms from a polar space group of P21 at 173 K to a centrosymmetric space group of P21 21 21 at 293 K.