Controlled Synthesis of Au25 Superatom Using a Dendrimer Template |
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| Authors: | Hisanori Muramatsu Tetsuya Kambe Takamasa Tsukamoto Takane Imaoka Kimihisa Yamamoto |
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| Institution: | 1.Laboratory of Chemistry and Life Science (CLS), Tokyo Institute of Technology, Yokohama 226-8503, Japan; (H.M.); (T.K.); (T.T.); (T.I.);2.JST-ERATO, Yamamoto Atom Hybrid Project, Tokyo Institute of Technology, Yokohama 226-8503, Japan;3.JST-PRESTO, Kawaguchi 332-0012, Japan |
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| 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. |
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| Keywords: | superatoms dendrimers gold clusters |
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