Pressure-Dependent Luminescence Properties of Gold(I) and Silver(I) Dithiocarbamate Compounds
Pressure-Dependent Luminescence Properties of Gold(I) and Silver(I) Dithiocarbamate Compounds
复制标题
DOI：
10.1021/jp206766p
复制
发表时间：
2012-01-26
影响因子：
3.7
通讯作者：
Reber, Christian
中科院分区：
文献类型：
--
作者：
Baril-Robert, Francois;Radtke, M. Alex;Reber, Christian
金(I)和银(I)的二硫代氨基甲酸配合物的发光性质有很大的不同。在室温下，金(I)和银(I)化合物分别观察到一个窄带和一个宽带，其最大值约为18000 cm(-1)，最大值约为13000 cm(-1)。金(I)化合物的发光受到外界压力的强烈影响，最大值向低能量方向移动了约-120厘米(-1)/千巴。相比之下，银化合物显示出向更高能量的小幅移动，大约+20厘米(-1)/千巴。从结构和桥联配体几何角度对这些位移进行了分析，揭示了无载体金属-金属相互作用对压力诱导的发光带位移的重要影响。
Luminescence spectra for dithiocarbamate complexes of gold(I) and silver(I) display very different luminescence properties. At room temperature, a narrow band with a maximum at approximately 18 000 cm(-1) and a broad band with a maximum at approximately 13 000 cm(-1) are observed for the gold(I) and silver(I) compounds, respectively. The luminescence from the gold(I) compounds is strongly affected by external pressure, with maxima shifting to lower energy by approximately -120 cm(-1)/kbar. In contrast, a silver compound shows a small shift to higher energy by approximately +20 cm(-1)/kbar. These shifts are analyzed in terms of structure and bridging ligand geometry, revealing the important influence of unsupported metal-metal interactions on pressure-induced shifts of luminescence bands.