Synthesis of selenolate-protected Au18(SeC6H5)14 nanoclusters.
Synthesis of selenolate-protected Au18(SeC6H5)14 nanoclusters.
复制标题
DOI：
10.1039/c2nr33466f
复制
发表时间：
2013-01
期刊：
影响因子：
6.7
通讯作者：
Qian Xu;Shuxin Wang;Zhao Liu;Guoyong Xu;Xiangming Meng;Manzhou Zhu
中科院分区：
文献类型：
--
作者：
Qian Xu;Shuxin Wang;Zhao Liu;Guoyong Xu;Xiangming Meng;Manzhou Zhu
这项工作报告了硒代酚盐保护的 Au(18)(SePh)(14) 纳米团簇的首次合成。该簇在光学吸收特性方面与其硫醇类似物表现出明显的差异。 Au(18)(SePh)(14)纳米团簇是通过Au(25)(SCH(2)CH(2)Ph)(18)与硒酚的受控反应获得的。电喷雾电离飞行时间质谱 (ESI-TOF-MS) 显示粗产物主要含有 Au(18)(SePh)(14) 纳米团簇，副产物包括 Au(15)(SePh)(13)、Au(19)(SePh)(15) 和 Au(20)(SePh)(16)。采用高效液相色谱（HPLC）分离Au(18)(SePh)(14)纳米簇。热重分析（TGA）、元素分析（EA）和（1）H/（13）C NMR 光谱的结果证实了簇的组成。据我们所知，这是硒酸盐保护的 Au(18) 纳米团簇的首次报道。未来的理论和 X 射线晶体学工作将揭示纳米团簇中硒酸盐-金键合的几何结构和性质。
This work reports the first synthesis of selenophenolate-protected Au(18)(SePh)(14) nanoclusters. This cluster exhibits distinct differences from its thiolate analogue in terms of optical absorption properties. The Au(18)(SePh)(14) nanoclusters were obtained via a controlled reaction of Au(25)(SCH(2)CH(2)Ph)(18) with selenophenol. Electrospray ionization time-of-flight mass spectrometry (ESI-TOF-MS) revealed the crude product to contain predominantly Au(18)(SePh)(14) nanoclusters, and side products include Au(15)(SePh)(13), Au(19)(SePh)(15) and Au(20)(SePh)(16). High-performance liquid chromatography (HPLC) was employed to isolate Au(18)(SePh)(14) nanoclusters. The results of thermogravimetric analysis (TGA), elemental analysis (EA), and (1)H/(13)C NMR spectroscopy confirmed the cluster composition. To the best of our knowledge, this is the first report of selenolate-protected Au(18) nanoclusters. Future theoretical and X-ray crystallographic work will reveal the geometric structure and the nature of selenolate-gold bonding in the nanocluster.