气候变化领域集成服务门户(CCPortal): Organic enantiomeric high-Tc ferroelectrics

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DOI	10.1073/pnas.1817866116
	Organic enantiomeric high-Tc ferroelectrics
	Li P.-F.; Liao W.-Q.; Tang Y.-Y.; Qiao W.; Zhao D.; Ai Y.; Yao Y.-F.; Xiong R.-G.
发表日期	2019
ISSN	0027-8424
起始页码	5878
结束页码	5885
卷号	116 期号:13
英文摘要	For nearly 100 y, homochiral ferroelectrics were basically multicomponent simple organic amine salts and metal coordination compounds. Single-component homochiral organic ferroelectric crystals with high-Curie temperature (Tc) phase transition were very rarely reported, although the first ferroelectric Rochelle salt discovered in 1920 is a homochiral metal coordination compound. Here, we report a pair of single-component organic enantiomorphic ferroelectrics, (R)-3-quinuclidinol and (S)-3-quinuclidinol, as well as the racemic mixture (Rac)-3-quinuclidinol. The homochiral (R)- and (S)-3-quinuclidinol crystallize in the enantiomorphic-polar point group 6 (C6) at room temperature, showing mirror-image relationships in vibrational circular dichroism spectra and crystal structure. Both enantiomers exhibit 622F6-type ferroelectric phase transition with as high as 400 K [above that of BaTiO3 (Tc = 381 K)], showing very similar ferroelectricity and related properties, including sharp step-like dielectric anomaly from 5 to 17, high saturation polarization (7 μC/cm2), low coercive field (15 kV/cm), and identical ferroelectric domains. Their racemic mixture (Rac)-3-quinuclidinol, however, adopts a centrosymmetric point group 2/m (C2h), undergoing a nonferroelectric high-temperature phase transition. This finding reveals the enormous benefits of homochirality in designing high-Tc ferroelectrics, and sheds light on exploring homochiral ferroelectrics with great application. © 2019 National Academy of Sciences. All Rights Reserved.
英文关键词	Enantiomer; Ferroelectric domains; Ferroelectricity; Homochirality
语种	英语
scopus关键词	article; chirality; crystal structure; enantiomer; high temperature; phase transition; polarization; racemic mixture; room temperature; vibrational circular dichroism
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160412
作者单位	Li, P.-F., Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, China; Liao, W.-Q., Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, China; Tang, Y.-Y., Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, China; Qiao, W., Shanghai Key Laboratory of Magnetic Resonance, Physics Department, School of Physics and Materials Science, East China Normal University, Shanghai, 200062, China; Zhao, D., Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, China; Ai, Y., Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, China; Yao, Y.-F., Shanghai Key Laboratory of Magnetic Resonance, Physics Department, School of Physics and Materials Science, East China Normal University, Shanghai, 200062, China; Xiong, R.-G., Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, China
推荐引用方式 GB/T 7714	Li P.-F.,Liao W.-Q.,Tang Y.-Y.,et al. Organic enantiomeric high-Tc ferroelectrics[J],2019,116(13).
APA	Li P.-F..,Liao W.-Q..,Tang Y.-Y..,Qiao W..,Zhao D..,...&Xiong R.-G..(2019).Organic enantiomeric high-Tc ferroelectrics.Proceedings of the National Academy of Sciences of the United States of America,116(13).
MLA	Li P.-F.,et al."Organic enantiomeric high-Tc ferroelectrics".Proceedings of the National Academy of Sciences of the United States of America 116.13(2019).