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首页> 外文期刊>Journal of the American Chemical Society >Pushing up the Size Limit of Metal Chalcogenide Supertetrahedral Nanoduster
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Pushing up the Size Limit of Metal Chalcogenide Supertetrahedral Nanoduster

机译：推高金属硫属化物超四面体纳米粉体的尺寸极限

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摘要

The cubic ZnS structure type and the size-dependent properties of related nanoparticles are of both fundamental and technological importance. Yet, it remains a challenge to synthesize large atom-precise clusters of this structure type. Currently, only supertetrahedral clusters with 4, 10, 20, and 35 metal sites (denoted as T2, T3, T4, and T5, respectively) are known. Because the synthesis of T5 in 2002, numerous synthetic efforts targeting larger clusters only resulted in T2–T5 clusters in various compositions and intercluster connectivity, with T6 (56 metal and 84 anion sites) being elusive. Here, we report the so-far largest supertetrahedral cluster (T6, [Zn_(25)In_(31)S_(84)]~(25–)). New T6 clusters can serve as the host matrix for optically active centers. Mn-doped variants of T4 and T6 have also been made, allowing the investigation of site-dependent Mn emission. The results lead to the elucidation of the mechanism regulating Mn emission via size-dependent crystal lattice strain and provide new insight into Mn-doping chemistry in cluster-based chalcogenides at the atomic level.
机译：立方ZnS结构类型和相关纳米颗粒的尺寸相关特性具有基础和技术重要性。然而，合成这种结构类型的大原子精确簇仍然是一个挑战。当前，只有具有4、10、20和35个金属位点（分别表示为T2，T3，T4和T5）的超四面体簇是已知的。由于2002年T5的合成，针对较大簇的大量合成努力仅导致T2-T5簇具有各种组成和簇间连通性，而T6（56个金属和84个阴离子位点）难以捉摸。在这里，我们报告了迄今为止最大的超四面体簇（T6，[Zn_（25）In_（31）S_（84）]〜（25–））。新的T6簇可以充当光学活跃中心的宿主矩阵。还制备了Mn掺杂的T4和T6变体，从而可以研究依赖于位点的Mn发射。结果阐明了通过尺寸依赖的晶格应变调节Mn释放的机理，并为原子级团簇型硫族化物中的Mn掺杂化学提供了新的见解。

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  • 来源
    《Journal of the American Chemical Society》 |2018年第3期|888-891|共4页
  • 作者

    Xiaofan Xu; Wei Wang; Dongliang Liu; Dandan Hu; Tao Wu; Xianhui Bu; Pingyun Feng;

  • 作者单位

    College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China;

    College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China;

    College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China;

    College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China;

    College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China;

    Department of Chemistry and Biochemistry, California State University, Long Beach, California 90840, United States;

    Department of Chemistry, University of California, Riverside, Riverside, California 92521, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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