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

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 siz...

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Bibliographic Details
Published in:The journal of physical chemistry letters 2017-02, Vol.8 (4), p.866-870
Main Authors: Higaki, Tatsuya, Liu, Chong, Chen, Yuxiang, Zhao, Shuo, Zeng, Chenjie, Jin, Renxi, Wang, Shuxin, Rosi, Nathaniel L, Jin, Rongchao
Format: Article
Language:English
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Summary: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.
ISSN:1948-7185
1948-7185
DOI:10.1021/acs.jpclett.6b03061