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硫醇保护的金团簇(Au_m(SR)_n,m和n为Au和SR的数目)由于其特殊的光学、电学性质以及特别的物理/化学性质,在纳米催化、生物医学和光学设备中具有潜在的应用价值。Au_(102)(SR)_(54)和Au_(25)(SR)_(18)-团簇单晶结构的确定是Au_m(SR)_n团簇合成的两大突破,它们的结构揭示了Au_m(SR)_n团簇中Au-S键新的成键特征和新的原子堆积方式。本文总结了Au_m(SR)_n团簇实验合成单晶结构的研究成果,概述了有谱图无单晶结构的Au_m(SR)_n团簇的实验进展,介绍了密度泛函理论预测Au_m(SR)_n团簇的研究概况,并结合本课题组的研究课题归纳了解释团簇稳定性和化学成键方式的超原子复合物模型,超原子网络模型和超级共价键模型及其应用。最后,对Au_m(SR)_n团簇的研究趋势进行了展望。
Thiol-protected gold clusters (Au_m (SR) _n, m and n are the numbers of Au and SR). Due to their special optical, electrical and special physical / chemical properties, nanocatalytic, biomedical and optical devices Has potential application value. The determination of single crystal structure of Au_ (102) (SR) _ (54) and Au_ (25) (SR) _ (18) - clusters is two breakthroughs in the synthesis of Au_m (SR) _n clusters. The new bond formation and new atomic stacking of Au-S bonds in Au_m (SR) _n clusters. In this paper, we summarize the experimental results of the Au_m (SR) _n cluster experiment on the synthesis of Au_m (SR) _n clusters, and present the progress of Au_m (SR) _n clusters with single crystal structure. _n clusters, and combined with the research topics of our group, we conclude the model of super-atom complex, super-atom network model and super covalent bond that explain cluster stability and chemical bonding mode and their applications. Finally, the research trend of Au_m (SR) _n clusters is prospected.