Chlorocholine Perchlorate is an Organic Ferroelectric with Two-Step Ladder-like Dielectric, Second Harmonic Generation Effects, and Ferroelectricity

Duo-Fu Li; Yao-Zhen Wu; Xiao-Li He; Xiang-Hong Deng; Jing Chen; Jia Fu; Yan Sui

doi:10.1002/cphc.202300207

Chlorocholine Perchlorate is an Organic Ferroelectric with Two-Step Ladder-like Dielectric, Second Harmonic Generation Effects, and Ferroelectricity

Chemphyschem. 2023 Jul 3;24(13):e202300207. doi: 10.1002/cphc.202300207. Epub 2023 May 11.

Authors

Duo-Fu Li^{1

2}, Yao-Zhen Wu¹, Xiao-Li He¹, Xiang-Hong Deng¹, Jing Chen¹, Jia Fu¹, Yan Sui¹

Affiliations

¹ School of Chemistry and Chemical Engineering, The Key Laboratory of Coordination Chemistry of Jiangxi Province, Humic Acid Utilization Engineering Research Center of Jiangxi Province, Jinggangshan University, Ji'An, Jiangxi, 343009, P.R. China.
² College of Chemistry, Nanchang University, Nanchang, Jiangxi, 330031, P. R. China.

PMID: 37089002
DOI: 10.1002/cphc.202300207

Abstract

The organic salt chlorocholine perchlorate [ClCH₂ CH₂ N(CH₃ )₃ ⋅ClO₄ ] (CCP) is found to be a molecular ferroelectric with a high theoretical spontaneous polarization (Ps) value up to 17.09 μC cm^-2 . CCP exhibits two successive order-disorder phase transition at 332 and 365 K with space groups changing from Cc to Cmc2₁ and then P6₃ /mmc, accompanied by unusual two-step ladder-like dielectric, SHG signal with obvious "on/off" contrasts. These findingings provides a further instance of exploring successive thermal-stimuli multi-responsive switching materials applied as switches and sensors.

Keywords: NLO; chlorocholine perchlorate; dielectric; ferroelectric; phase transition.

Abstract

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