Oxidation-Induced Transformation of Eight-Electron Gold Nanoclusters: [Au23(SR)16]− to [Au28(SR)20]0

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• 作者：Tatsuya Higaki ; Chong LiuYuxiang Chen ; Shuo Zhao ; Chenjie Zeng ; Renxi JinShuxin Wang ; Nathaniel L. Rosi ; Rongchao Jin
• 刊名：The Journal of Physical Chemistry Letters
• 出版年：2017
• 出版时间：February 16, 2017
• 年：2017
• 卷：8
• 期：4
• 页码：866-870
• 全文大小：395K
• ISSN：1948-7185

文摘

Here we report an oxidation-induced transformation of [Au₂₃(S-c-C₆H₁₁)₁₆]⁻TOA⁺ (S-c-C₆H₁₁: cyclohexanethiolate; TOA: tetraoctylammonium) to the [Au₂₈(S-c-C₆H₁₁)₂₀]⁰ nanocluster by H₂O₂ treatment under ambient conditions. This is the first example of oxidation-induced transformation of one stable size to another with atomic precision. The product was crystallized and analyzed by X-ray crystallography. Further insights into the transformation process were obtained by monitoring the process with optical spectroscopy and also by electrochemical analysis. This work adds a new dimension to the recently established transformation chemistry of nanoclusters that involves size and structure transformations.