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首页> 外文期刊>Langmuir: The ACS Journal of Surfaces and Colloids >Alkanethiolate-protected gold clusters generated from sodium S-dodecylthiosulfate (Bunte salts)
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Alkanethiolate-protected gold clusters generated from sodium S-dodecylthiosulfate (Bunte salts)

机译:S-十二烷基硫代硫酸钠(邦特盐)生成的链烷硫醇盐保护的金簇

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摘要

A new synthesis for alkanethiolate-functionalized gold clusters derived from sodium S-dodecylthiosulfate is presented. The new clusters are analytically characterized by H-1 NMR spectroscopy, X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy, high-resolution transmission electron microscopy (HRTEM), thermogravimetric analysis (TGA), and UV-vis absorption spectroscopy. These monolayer-protected clusters (MPCs) are indistinguishable in composition, monolayer architecture, and Au-sulfur bonding from those previously prepared from dodecanethiol using the Brust synthesis. One difference is that, for syntheses run under identical conditions, the average core dimensions for MPC products from sodium S-dodecylthiosulfate are somewhat larger. The average core size of MPCs synthesized from sodium S-dodecylthiosulfate is somewhat solvent-dependent, being smaller when they are made using toluene/H2O rather than THF/H2O. [References: 69]
机译:提出了从S-十二烷基硫代硫酸钠衍生的链烷硫醇官能化金簇的新合成方法。通过H-1 NMR光谱,X射线光电子能谱(XPS),傅里叶变换红外(FTIR)光谱,高分辨率透射电子显微镜(HRTEM),热重分析(TGA)和UV-vis吸收光谱。这些单层保护的簇(MPC)在组成,单层结构和金硫键方面与以前使用Brust合成方法从十二烷硫醇制备的簇没有区别。一个区别是,对于在相同条件下进行的合成,来自S-十二烷基硫代硫酸钠的MPC产品的平均核心尺寸稍大。由S-十二烷基硫代硫酸钠合成的MPC的平均核大小在一定程度上取决于溶剂,当使用甲苯/ H2O而不是THF / H2O制备时,其平均核尺寸较小。 [参考:69]

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