Kang Xi, Jin Shan, Xiong Lin, Wei Xiao, Zhou Manman, Qin Chenwanli, Pei Yong, Wang Shuxin, Zhu Manzhou
Department of Chemistry and Centre for Atomic Engineering of Advanced Materials , Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials , Anhui University , Hefei , Anhui 230601 , P. R. China . Email:
Key Laboratory of Structure and Functional Regulation of Hybrid Materials , Anhui University , Ministry of Education , Hefei , 230601 , P. R. China.
Chem Sci. 2019 Dec 27;11(6):1691-1697. doi: 10.1039/c9sc05700e. eCollection 2020 Feb 14.
Atomically precise engineering on the nanocluster surface remains highly desirable for the fundamental understanding of how surface structures of a nanocluster contribute to its overall properties. In this paper, the concept of "graft-onto" has been exploited to facilitate nanocluster growth on surface structures. Specifically, the Ag(DPPM)Cl complex is used for re-constructing the surface structure of (SR)(PPh) ( , SR = 1-adamantanethiolate) and producing a size-growth nanocluster - (SR)(DPPM)Cl ( ). The grafting effect of Ag(DPPM)Cl induces both direct changes on the surface structure (, size growth, structural transformation, and surface rotation) and indirect changes on the kernel structure (from a fcc configuration to an icosahedral configuration). Remarkable differences have been observed by comparing optical properties between and . Significantly, exhibits high photo-luminescent intensity with a quantum yield of 29.3%, which is six times that of the . Overall, this work presents a new approach (, graft-onto) for the precise dictation of nanocluster surface structures at the atomic level.
在纳米团簇表面进行原子精确工程对于深入理解纳米团簇的表面结构如何影响其整体性质仍然非常重要。在本文中，“接枝到”的概念被用于促进纳米团簇在表面结构上的生长。具体而言，Ag(DPPM)Cl配合物用于重构(SR)(PPh)（，SR = 1-金刚烷硫醇盐）的表面结构，并生成尺寸增长的纳米团簇-(SR)(DPPM)Cl（）。Ag(DPPM)Cl的接枝作用既引起了表面结构的直接变化（，尺寸增长、结构转变和表面旋转），也引起了内核结构的间接变化（从面心立方构型转变为二十面体构型）。通过比较和的光学性质，观察到了显著差异。值得注意的是，具有29.3%的量子产率，表现出高光致发光强度，是量子产率的六倍。总体而言，这项工作提出了一种在原子水平上精确调控纳米团簇表面结构的新方法（，接枝到）。
