高氯酸氯胆碱是一种具有两步梯状介电常数、二次谐波产生效应和铁电性的有机铁电体。
Chlorocholine Perchlorate is an Organic Ferroelectric with Two-Step Ladder-like Dielectric, Second Harmonic Generation Effects, and Ferroelectricity.
机构信息
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.
College of Chemistry, Nanchang University, Nanchang, Jiangxi, 330031, P. R. China.
出版信息
Chemphyschem. 2023 Jul 3;24(13):e202300207. doi: 10.1002/cphc.202300207. Epub 2023 May 11.
The organic salt chlorocholine perchlorate [ClCH CH N(CH ) ⋅ClO ] (CCP) is found to be a molecular ferroelectric with a high theoretical spontaneous polarization (Ps) value up to 17.09 μC cm . CCP exhibits two successive order-disorder phase transition at 332 and 365 K with space groups changing from Cc to Cmc2 and then P6 /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.
发现有机盐高氯酸氯胆碱 [ClCH CH N(CH ) ⋅ClO ] (CCP) 是一种分子铁电体，具有高达 17.09 μC·cm 的理论自发极化 (Ps) 值。CCP 在 332 和 365 K 时表现出两个连续的有序-无序相变，空间群从 Cc 变为 Cmc2，然后变为 P6/mmc，伴随着不寻常的两步阶梯式介电、SHG 信号，具有明显的“开/关”对比。这些发现为探索作为开关和传感器应用的连续热刺激多响应切换材料提供了进一步的实例。
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