Controlled Synthesis of Au25 Superatom Using a Dendrimer Template

Hisanori Muramatsu; Tetsuya Kambe; Takamasa Tsukamoto; Takane Imaoka; Kimihisa Yamamoto

doi:10.3390/molecules27113398

Controlled Synthesis of Au₂₅ Superatom Using a Dendrimer Template

Molecules. 2022 May 25;27(11):3398. doi: 10.3390/molecules27113398.

Authors

Hisanori Muramatsu¹, Tetsuya Kambe^{1

2}, Takamasa Tsukamoto^{1

2

3}, Takane Imaoka^{1

2}, Kimihisa Yamamoto^{1

2}

Affiliations

¹ Laboratory of Chemistry and Life Science (CLS), Tokyo Institute of Technology, Yokohama 226-8503, Japan.
² JST-ERATO, Yamamoto Atom Hybrid Project, Tokyo Institute of Technology, Yokohama 226-8503, Japan.
³ JST-PRESTO, Kawaguchi 332-0012, Japan.

Abstract

Superatoms are promising materials for their potential in elemental substitution and as new building blocks. Thus far, various synthesis methods of thiol-protected Au clusters including an Au₂₅ superatom have been investigated. However, previously reported methods were mainly depending on the thermodynamic stability of the aimed clusters. In this report, a synthesis method for thiol-protected Au clusters using a dendrimers template is proposed. In this method, the number of Au atoms was controlled by the stepwise complexation feature of a phenylazomethine dendrimer. Therefore, synthesis speed was increased compared with the case without the dendrimer template. Hybridization for the Au₂₅ superatoms was also achieved using the complexation control of metals.

Keywords: dendrimers; gold clusters; superatoms.

Abstract

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