The intrinsic factors affecting the bulk structures of nanocrystallites are not well explored during crystallization. In this study, it is demonstrated that the chemical potential of growth units plays decisive role in governing the final structure of nanocrystals. It is found that the types of reaction vessels are able to vary the chemical potential of growth units, and make the Pt and Pd nanocrystals (NCs) unexpectedly evolve from the cyclic penta‐twinned to the single‐crystal nanostructures. In turn, it is concluded that the crystal growth units with lower chemical potential favor the formation of crystal nuclei with lower chemical potential during the nucleation. This new approach in tuning the bulk structures of NCs enriches the understanding of the crystallization process under supersaturated (nonequilibrium) condition, and would provide a general guidance for controlling nanocrystals with various thermodynamic forms.

中文翻译：

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调整晶体生长单元的化学势以调整纳米晶体的本体结构

在结晶过程中没有很好地探索影响纳米微晶整体结构的内在因素。在这项研究中，证明生长单元的化学势在控制纳米晶体的最终结构中起着决定性的作用。研究发现，反应容器的类型能够改变生长单元的化学势，使铂和钯纳米晶（NCs）意外地从环状五孪晶演化为单晶纳米结构。反过来，可以得出结论，具有较低化学势的晶体生长单元有利于在成核过程中形成具有较低化学势的晶核。这种调节 NC 体结构的新方法丰富了对过饱和（非平衡）条件下结晶过程的理解，