incorporated into the space between the inorganic chains. A temperature-dependent single crystal structure indicates that there exists an order–disorder transition of the cation. The dynamic motion of the cation strongly influences the dielectric and emission features of 1. 1 shows a two-step dielectric response. The first step dielectric response at a low frequency is caused by direct current conduction and
合成了基于
碘铅酸盐的杂晶[C 2 -Apy] [PbI 3 ](1)(C 2 -Apy + = 1-乙基-4-
氨基吡啶鎓),并对其结构进行了表征。单晶X射线衍射表明,1在正交晶系中以150 K的空间群Pnma结晶。无机组分形成直的和面共享的八面体[PbI 3 ] ∞链,有机组分形成C 2 -Apy +引入无机链之间空间的阳离子。与温度有关的单晶结构表明存在阳离子的无序过渡。阳离子的动态运动强烈影响的电介质和发射特征1。图1示出了两步介电响应。低频下的第一步介电响应是由直流电传导和电极极化引起的,阻抗谱已证明了这一点。高频(10 kHz至10
MHz)下的第二介电响应与烷基链的有序无序跃迁和
吡啶环的动态运动有关。另外,1显示出多波段发射,并且不同的发射波段随着温度变化显示出不同的趋势,这使得1表现出热致变色发光特性。