Oscillation is an intriguing phenomenon in nature. However, structural oscillation has not yet been found in semiconducting nanoparticles, primarily due to the difficulty of structural resolution at the atomic level. The emergence of gold nanoclusters (ultrasmall nanoparticles) has provided an excellent opportunity to address some challenging issues in the nanoparticle field. Herein, two Au28(CHT)20 (CHT: cyclohexanethiolate) structural isomers (Au28i and Au28ii for short) were concurrently synthesized by employing a quasi-antigalvanic method, and they could be reversibly transformed into each other for at least 10 cycles, driven by dissolution and crystallization processes. The transformation from Au28ii to Au28i is solvent dielectric constant-dependent, with a notable deuteration effect from CH2Cl2. The markedly different photoluminescence values of these two isomers not only have important implications for the structure-property correlations but also have potential applications in converting, sensing, etc.

中文翻译：

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金纳米粒子中揭示的结构振荡

振荡是自然界中一种有趣的现象。然而，在半导体纳米粒子中尚未发现结构振荡，这主要是由于在原子水平上难以进行结构解析。金纳米团簇（超小纳米粒子）的出现为解决纳米粒子领域的一些具有挑战性的问题提供了极好的机会。在此，采用准抗电偶法同时合成了两种 Au28(CHT)20（CHT：环己硫醇盐）结构异构体（简称 Au28i 和 Au28ii），并且它们可以在至少 10 个循环的驱动下可逆地相互转化。溶解和结晶过程。从 Au28ii 到 Au28i 的转变依赖于溶剂介电常数，具有显着的 CH2Cl2 氘代效应。