Leveraging Cation Exchange in InP Magic-Sized Clusters To Access Coinage Metal Phosphide Nanocrystals
Leveraging Cation Exchange in InP Magic-Sized Clusters To Access Coinage Metal Phosphide Nanocrystals
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DOI：
10.1021/acs.chemmater.3c03258
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发表时间：
2024-03-05
影响因子：
8.6
通讯作者：
Cossairt，Brandi M.
中科院分区：
文献类型：
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作者：
Eagle，Forrest W.;Harvey，Samantha;Cossairt，Brandi M.
我们报道了In37P20魔术尺寸团簇(MSCS)在室温下通过阳离子交换转化得到掺杂的InP团簇和纳米晶，以及Cu3-XP、Ag3-XP和AU3-XP纳米晶。利用光谱和结构表征相结合的方法，我们确定了InP团簇的掺杂过程中，它们的配位层发生了显著的重排，但当加入1到5当量的铸币金属盐(每个团簇)时，它们的核心只发生了微小的变化。然而，当加入37当量的铸币金属盐时，X射线光电子能谱、X射线衍射和对分布函数分析表明，MSCs在成分和结构上都完全转变为铟完全挤出的新的超小铸币金属磷化物纳米晶。我们进一步利用这些掺杂的InP MSCs和超小的铸造金属磷化物纳米晶体来合成更大的掺杂InP纳米晶体和各种尺寸在3-15 nm范围的铸造金属磷化物纳米晶体。
We report the conversion of In37P20magic-sized clusters (MSCs) via cation exchange at room temperature to obtain doped InP clusters and nanocrystals, as well as Cu3–xP, Ag3–xP, and Au3–xP nanocrystals. Using a combination of spectroscopic and structural characterization, we determine that the InP clusters undergo doping with significant rearrangement of their ligand shells, but only minor changes in their cores when 1 to 5 equiv of coinage metal salt (per cluster) are added. However, when 37 equiv of coinage metal salt are added, the MSCs fully transform both compositionally and structurally into new ultrasmall coinage metal phosphide nanocrystals with complete extrusion of indium, as determined via X-ray photoelectron spectroscopy, X-ray diffraction, and pair distribution function analysis. We further document the use of these doped InP MSCs and ultrasmall coinage metal phosphide nanocrystals for the synthesis of larger doped InP nanocrystals and a variety of coinage metal phosphide nanocrystals in the 3–15 nm size range.