离子溶液中的芳香环:反常化学计量比的二维晶体和其铁磁性  

Aromatic Rings in Ion Soultions:Two-Dimensional Crystals of Unconventional Stoichiometries and Ferromagnetism

作　　者：杨一舟 彭兵权 雷晓玲 方海平 Yizhou Yang;Bingquan Peng;Xiaoling Lei;Haiping Fang(School of Physics,East China University of Science and Technology,Shanghai 200237;Wenzhou Institute,University of Chinese Academy of Sciences,Wenzhou 325001;Oujiang Laboratory,Wenzhou 325000)

机构地区：[1]华东理工大学物理学院,上海200237 [2]中国科学院大学温州研究院,温州325001 [3]瓯江实验室,温州325000

出　　处：《化学进展》2022年第7期1524-1536,共13页Progress in Chemistry

基　　金：国家自然科学基金项目(No.11974366);中央高校基本科研业务费专项资金资助。

摘　　要：溶液中的水合离子⁃π作用,作为一种非共价键相互作用,对研究软凝聚态物质至关重要。本文回顾了基于水合离子⁃π作用得到的具有反常化学计量比的二维晶体及其奇异特性,这些晶体包括常温常压条件下的氯化二钠(Na_(2)Cl)、氯化三钠(Na_(3)Cl)和一氯化钙(CaCl)等。这些具有反常化学计量比的二维晶体有着不同于常规三维晶体中的阴阳离子比例与独特的电子结构,具有与常规三维晶体完全不同的物理化学性质,包括室温铁磁性在内的多种特殊物理性质。这类具有反常化学计量比的铁磁性物质可能为生物体系的磁效应、磁医学的研究以及低维磁性材料的设计提供全新的思路。Hydrated cation⁃πinteraction,as a kind of non⁃covalent interaction,is essential to the study of soft condensed matter.This paper reviews the recent progress in the two⁃dimensional crystals of unconventional stoichiometries induced by the hydrated cation⁃πinteraction,and their distinguished features.These crystals include Na_(2)Cl,Na_(3)Cl and CaCl at ambient conditions.These crystals have abnormal cation⁃anion ratios different from those of normal three⁃dimensional crystals and unique electronic structures.Consequently,their physical and chemical properties are usually different from those of normal three⁃dimensional crystals,including the room temperature ferromagnetism.These ferromagnetic materials of unconventional stoichiometries may provide new insight into biomagnetism,medicine⁃related magnetism and the design of low⁃dimensional ferromagnetic materials.

关 键 词：水合离子-π作用 芳香环 二维晶体 反常化学计量比 

分 类 号：O64[理学—物理化学]