An above-room-temperature switchable molecular dielectric with a large dielectric change between high and low dielectric states  

作　　者：DU Yang HAO HuiMin ZHANG QianChong ZHAO HaiXia LONG LaSheng HUANG RongBin ZHENG LanSun 

机构地区：[1]State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University

出　　处：《Science China Chemistry》2013年第7期917-922,共6页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China (21001089, 20825103, 90922031 and 21021061);the 973 project from MSTC (2012CB821704)

摘　　要：Dielectric anisotropy of anilinium perchlorate is investigated at various temperatures. Crystal structures at different temperatures reveal that significant dielectric change between low and high dielectric states is closely related to the disorder of the anilinium cation and perchlorate anion at high dielectric state; meanwhile, the conductivity after phase transition also contributes a lot to the high dielectric state.Dielectric anisotropy of anilinium perchlorate is investigated at various temperatures. Crystal structures at different temperatures reveal that significant dielectric change between low and high dielectric states is closely related to the disorder of the ani- linium cation and perchlorate anion at high dielectric state; meanwhile, the conductivity after phase transition also contributes a lot to the high dielectric state.

关 键 词：switchable molecular dielectric ionic conductivity dielectric anisotropy phase transition 

分 类 号：O646[理学—物理化学]