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Kinetically controlled, high-yield, direct synthesis of [Au25(SePh)18]−TOA+

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Abstract

In this article, we present a facile, direct, synthetic approach of preparing monodisperse [Au25(SePh)18]− nanoclusters in high yield. In this synthetic approach, two-phase Brust-Schiffrin method is used. Both PhSeH and NaBH4 should be added drop-wise to the solution of Au (III) at the same time. The formula and molecular purity of [Au25(SePh)18]−TOA+ clusters are characterized by MALDI-TOF mass spectrometry, NMR and TGA analysis. Furthermore, some critical parameters to obtain pure [Au25(SePh)18]−TOA+ are identified, including the NaBH4-to-Au ratio, the selenolate-to-Au ratio and the temperature. The facile, direct, high yield synthetic method can be widely applied in the theoretical research of Au clusters protected by selenol.

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Authors and Affiliations

  1. Department of Chemistry, Anhui University, Hefei, 230601, China

    YongBo Song, TianTian Cao, HuiJuan Deng, XiuYi Zhu, Peng Li & ManZhou Zhu

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  1. YongBo Song
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  2. TianTian Cao
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  3. HuiJuan Deng
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  4. XiuYi Zhu
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  5. Peng Li
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  6. ManZhou Zhu
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Correspondence to Peng Li or ManZhou Zhu.

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Song, Y., Cao, T., Deng, H. et al. Kinetically controlled, high-yield, direct synthesis of [Au25(SePh)18]−TOA+ . Sci. China Chem. 57, 1218–1224 (2014). https://doi.org/10.1007/s11426-014-5071-5

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  • DOI: https://doi.org/10.1007/s11426-014-5071-5

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