Anomalous dielectric behaviour and thermal motion of water molecules incorporated in porous crystals

doi:10.1002/pssc.201100717

CORC > 北京大学 > 化学与分子工程学院

	Anomalous dielectric behaviour and thermal motion of water molecules incorporated in porous crystals
	Zhou, Biao ; Kobayashi, Akiko ; Wang, Zhe-Ming ; Long, La-Sheng ; Kobayashi, Hayao
刊名	physica status solidi c current topics in solid state physics
	2012
DOI	10.1002/pssc.201100717
英文摘要	By combining physical measurements and molecular dynamics (MD) simulations, we investigated the dielectric properties of guest water molecules confined in the channels of porous coordination polymer crystals. [Ln2Cu3(IDA)6] · n H2O (Ln = La, Nd, Sm, Gd, Ho, Er; IDA = [NH(CH2COO)2]2-; n 9) exhibited large dielectric constants (??) and antiferroelectric behaviours at high temperatures. In particular, ?? of [Sm2Cu3(IDA)6] · n H2O became as large as 1300 at around 400 K. In addition, the crystals exhibited broad dielectric peaks at around 170 K below which ?? became very small, indicating the freezing of the positional freedom of guest water molecules. The dielectric constants of [Cu(IN)2] · n H2O (IN = (C6H4NO2)-) also increased fairly rapidly with temperature, which attributed to the melting of the hydrogen-bonded water chain system. These temperature dependences of ?? were consistent with the results of MD simulation. ? 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.; EI; 0; 5; 1216-1218; 9
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/411444]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zhou, Biao,Kobayashi, Akiko,Wang, Zhe-Ming,et al. Anomalous dielectric behaviour and thermal motion of water molecules incorporated in porous crystals[J]. physica status solidi c current topics in solid state physics,2012.
APA	Zhou, Biao,Kobayashi, Akiko,Wang, Zhe-Ming,Long, La-Sheng,&Kobayashi, Hayao.(2012).Anomalous dielectric behaviour and thermal motion of water molecules incorporated in porous crystals.physica status solidi c current topics in solid state physics.
MLA	Zhou, Biao,et al."Anomalous dielectric behaviour and thermal motion of water molecules incorporated in porous crystals".physica status solidi c current topics in solid state physics (2012).