典型文献
Deuteration triggered downward shift of dielectric phase transition temperature in a hydrogen-bonded molecular crystal
文献摘要：
Deuteration of hydrogen-bonded phase transition crystals can increase the transition temperatures due to the isotope effect.But rare examples show the opposite trend that originates from the structural changes of the hydrogen bond,known as the geometric H/D isotope effect.Herein,we report an organic crys-tal,diethylammonium hydrogen 1,4-terephthalate,exhibits a reversible structural phase transition and dielectric switching.Structural study shows the cations reside in channels formed by one-dimensional hydrogen-bonded anionic chains and undergo an order-disorder transition at around 206 K.The deuter-ated counterpart shows an elongation of the O…O hydrogen bond by about 0.005 ?.This geometric iso-tope effect releases the internal pressure of the anionic host on the cation guests and results in a down-ward shift of the phase transition temperature by 10 K.
文献关键词：
中图分类号：
作者姓名：
Bei-Dou Liang;Tong Jin;Le-Ping Miao;Chao-Yang Chai;Chang-Chun Fan;Xiang-Bin Han;Wen Zhang
作者机构：
Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics and School of Chemistry and Chemical Engineering,Southeast University,Nanjing 211189,China
文献出处：
引用格式：
[1]Bei-Dou Liang;Tong Jin;Le-Ping Miao;Chao-Yang Chai;Chang-Chun Fan;Xiang-Bin Han;Wen Zhang-.Deuteration triggered downward shift of dielectric phase transition temperature in a hydrogen-bonded molecular crystal)[J].中国化学快报（英文版）,2022(03):1422-1424
A类：
Deuteration,diethylammonium,deuter
B类：
triggered,downward,shift,dielectric,phase,transition,hydrogen,bonded,molecular,crystals,can,increase,temperatures,due,isotope,effect,But,rare,examples,opposite,trend,that,originates,from,structural,changes,known,geometric,Herein,we,report,organic,terephthalate,exhibits,reversible,switching,Structural,study,shows,cations,reside,channels,formed,by,one,dimensional,anionic,chains,undergo,disorder,around,ated,counterpart,elongation,about,This,releases,internal,pressure,host,guests,results
AB值：
0.49687
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