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  1. Article ; Online: Controlled Synthesis of Au 25 Superatom Using a Dendrimer Template

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

    Molecules, Vol 27, Iss 3398, p

    2022  Volume 3398

    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 Au 25 superatom have been investigated. However, previously ... ...

    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 Au 25 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 Au 25 superatoms was also achieved using the complexation control of metals.
    Keywords superatoms ; dendrimers ; gold clusters ; Organic chemistry ; QD241-441
    Language English
    Publishing date 2022-05-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Artificial Photosynthesis Model

    Takamasa Tsukamoto / Tetsuya Shimada / Shinsuke Takagi

    ACS Omega, Vol 3, Iss 12, Pp 18563-

    Photochemical Reaction System with Efficient Light-Harvesting Function on Inorganic Nanosheets

    2018  Volume 18571

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2018-12-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Periodicity of molecular clusters based on symmetry-adapted orbital model

    Takamasa Tsukamoto / Naoki Haruta / Tetsuya Kambe / Akiyoshi Kuzume / Kimihisa Yamamoto

    Nature Communications, Vol 10, Iss 1, Pp 1-

    2019  Volume 8

    Abstract: Prediction of stable clusters based on the jellium model is limited because of the usual assumption of their spherical symmetry. Here the authors propose a symmetry adapted orbital model by quantum chemistry calculations for the prediction of stable ... ...

    Abstract Prediction of stable clusters based on the jellium model is limited because of the usual assumption of their spherical symmetry. Here the authors propose a symmetry adapted orbital model by quantum chemistry calculations for the prediction of stable clusters with various shapes that obey a certain periodicity.
    Keywords Science ; Q
    Language English
    Publishing date 2019-08-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Periodicity of molecular clusters based on symmetry-adapted orbital model

    Takamasa Tsukamoto / Naoki Haruta / Tetsuya Kambe / Akiyoshi Kuzume / Kimihisa Yamamoto

    Nature Communications, Vol 10, Iss 1, Pp 1-

    2019  Volume 8

    Abstract: Prediction of stable clusters based on the jellium model is limited because of the usual assumption of their spherical symmetry. Here the authors propose a symmetry adapted orbital model by quantum chemistry calculations for the prediction of stable ... ...

    Abstract Prediction of stable clusters based on the jellium model is limited because of the usual assumption of their spherical symmetry. Here the authors propose a symmetry adapted orbital model by quantum chemistry calculations for the prediction of stable clusters with various shapes that obey a certain periodicity.
    Keywords Science ; Q
    Language English
    Publishing date 2019-08-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Nanomaterials design for super-degenerate electronic state beyond the limit of geometrical symmetry

    Naoki Haruta / Takamasa Tsukamoto / Akiyoshi Kuzume / Tetsuya Kambe / Kimihisa Yamamoto

    Nature Communications, Vol 9, Iss 1, Pp 1-

    2018  Volume 6

    Abstract: No substances with greater degrees of degeneracy than spherical atoms are known, due to geometrical limitations. In this work the authors combine density functional theory and tight-binding models to predict metal clusters with higher-fold degeneracies ... ...

    Abstract No substances with greater degrees of degeneracy than spherical atoms are known, due to geometrical limitations. In this work the authors combine density functional theory and tight-binding models to predict metal clusters with higher-fold degeneracies than spherical atoms, which are ascribed to dynamical symmetry.
    Keywords Science ; Q
    Language English
    Publishing date 2018-09-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Atom-hybridization for synthesis of polymetallic clusters

    Takamasa Tsukamoto / Tetsuya Kambe / Aiko Nakao / Takane Imaoka / Kimihisa Yamamoto

    Nature Communications, Vol 9, Iss 1, Pp 1-

    2018  Volume 7

    Abstract: Multimetallic clusters are difficult to synthesize with control over elemental composition and organization. Here, the authors use dendrimers to precisely template the formation of five-element sub-nanoclusters, providing an elegant route to otherwise- ... ...

    Abstract Multimetallic clusters are difficult to synthesize with control over elemental composition and organization. Here, the authors use dendrimers to precisely template the formation of five-element sub-nanoclusters, providing an elegant route to otherwise-inaccessible multinary compounds.
    Keywords Science ; Q
    Language English
    Publishing date 2018-09-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Nanomaterials design for super-degenerate electronic state beyond the limit of geometrical symmetry

    Naoki Haruta / Takamasa Tsukamoto / Akiyoshi Kuzume / Tetsuya Kambe / Kimihisa Yamamoto

    Nature Communications, Vol 9, Iss 1, Pp 1-

    2018  Volume 6

    Abstract: No substances with greater degrees of degeneracy than spherical atoms are known, due to geometrical limitations. In this work the authors combine density functional theory and tight-binding models to predict metal clusters with higher-fold degeneracies ... ...

    Abstract No substances with greater degrees of degeneracy than spherical atoms are known, due to geometrical limitations. In this work the authors combine density functional theory and tight-binding models to predict metal clusters with higher-fold degeneracies than spherical atoms, which are ascribed to dynamical symmetry.
    Keywords Science ; Q
    Language English
    Publishing date 2018-09-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Atom-hybridization for synthesis of polymetallic clusters

    Takamasa Tsukamoto / Tetsuya Kambe / Aiko Nakao / Takane Imaoka / Kimihisa Yamamoto

    Nature Communications, Vol 9, Iss 1, Pp 1-

    2018  Volume 7

    Abstract: Multimetallic clusters are difficult to synthesize with control over elemental composition and organization. Here, the authors use dendrimers to precisely template the formation of five-element sub-nanoclusters, providing an elegant route to otherwise- ... ...

    Abstract Multimetallic clusters are difficult to synthesize with control over elemental composition and organization. Here, the authors use dendrimers to precisely template the formation of five-element sub-nanoclusters, providing an elegant route to otherwise-inaccessible multinary compounds.
    Keywords Science ; Q
    Language English
    Publishing date 2018-09-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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