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  1. Article ; Online: Recent advances in atomic cluster synthesis: a perspective from chemical elements.

    Tsukamoto, Takamasa

    Nanoscale

    2024  

    Abstract: Despite its potential significance, "cluster chemistry" remains a somewhat marginalized topic within the chemistry field. However, atomic clusters with their unusual and unique structures and properties represent a novel material group situated between ... ...

    Abstract Despite its potential significance, "cluster chemistry" remains a somewhat marginalized topic within the chemistry field. However, atomic clusters with their unusual and unique structures and properties represent a novel material group situated between molecules and nanoparticles or solid matter, judging from both scientific standpoints and historical backgrounds. Surveying an entire material group, including all substances that can be regarded as a cluster, is essential for establishing cluster chemistry as a more prominent chemistry field. This review aims to provide a comprehensive understanding by categorizing, summarizing, and reviewing clusters, focusing on their constituent elements in the periodic table. However, because numerous disparate synthetic processes have been individually developed to date, their straightforward and uniform classification is a challenging task. As such, comprehensively reviewing this field from a chemical composition viewpoint presents significant obstacles. It should be therefore noted that despite adopting a synthetic method-based classification in this review, the discussions presented herein could entail inaccuracies. Nevertheless, this unorthodox viewpoint unfolds a new scientific perspective which accentuates the common ground between different development processes by emphasizing the lack of a definitive border between their synthetic methods and material groups, thus opening new avenues for cementing cluster chemistry as an attractive chemistry field.
    Language English
    Publishing date 2024-04-23
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2515664-0
    ISSN 2040-3372 ; 2040-3364
    ISSN (online) 2040-3372
    ISSN 2040-3364
    DOI 10.1039/d3nr06522g
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Synthesis and functionalities of FeSn

    Muramatsu, Hisanori / Kambe, Tetsuya / Tsukamoto, Takamasa / Kuzume, Akiyoshi / Hosono, Reina / Imaoka, Takane / Yamamoto, Kimihisa

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2024  Volume 30, Issue 20, Page(s) e202400060

    Abstract: Superatoms are promising as new building block materials that can be designed by precise controlling of the constituent atoms. Stannaspherene ( ... ...

    Abstract Superatoms are promising as new building block materials that can be designed by precise controlling of the constituent atoms. Stannaspherene (Sn
    Language English
    Publishing date 2024-02-19
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1478547-X
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.202400060
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Controlled Synthesis of Au

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

    Molecules (Basel, Switzerland)

    2022  Volume 27, Issue 11

    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 ... ...

    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
    Language English
    Publishing date 2022-05-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules27113398
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.MO 81: Show issues

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  4. Article ; Online: Unique Functions and Applications of Rigid Dendrimers Featuring Radial Aromatic Chains.

    Tsukamoto, Takamasa / Imaoka, Takane / Yamamoto, Kimihisa

    Accounts of chemical research

    2021  Volume 54, Issue 24, Page(s) 4486–4497

    Abstract: Dendrimers, which are highly branched polymers and regarded as huge single molecules, are interesting substances from the aspect of not only polymer chemistry but also molecular chemistry. Various applications in materials science and life science have ... ...

    Abstract Dendrimers, which are highly branched polymers and regarded as huge single molecules, are interesting substances from the aspect of not only polymer chemistry but also molecular chemistry. Various applications in materials science and life science have been investigated by taking advantage of the radially layered structures and intramolecular nanospaces of dendrimers. Most dendrimers have flexible structures that originate from their organic chains which contain many
    Language English
    Publishing date 2021-12-03
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1483291-4
    ISSN 1520-4898 ; 0001-4842
    ISSN (online) 1520-4898
    ISSN 0001-4842
    DOI 10.1021/acs.accounts.1c00530
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  5. Article ; Online: Modern cluster design based on experiment and theory.

    Tsukamoto, Takamasa / Kambe, Tetsuya / Imaoka, Takane / Yamamoto, Kimihisa

    Nature reviews. Chemistry

    2021  Volume 5, Issue 5, Page(s) 338–347

    Abstract: For decades, chemists have explored cluster compounds according to theoretical models that have proved too simplistic to accurately predict cluster properties, stabilities and functions. By incorporating molecular symmetry into existing cluster models, ... ...

    Abstract For decades, chemists have explored cluster compounds according to theoretical models that have proved too simplistic to accurately predict cluster properties, stabilities and functions. By incorporating molecular symmetry into existing cluster models, we can better study real polyatomic molecules and have new guidelines for their design. This symmetry-adapted cluster model allows us to discover substances that shatter the conventional notion of clusters. Theoretical predictors will point to the viability of new clusters, whose syntheses can be realized with parallel advances in experimental methods. This Perspective describes these modern experimental and theoretical strategies for cluster design and how they may give rise to new fields in cluster chemistry.
    Language English
    Publishing date 2021-03-24
    Publishing country England
    Document type Journal Article ; Review
    ISSN 2397-3358
    ISSN (online) 2397-3358
    DOI 10.1038/s41570-021-00267-4
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  6. Article: Poly-phenylene jacketed tailor-made dendritic phenylazomethine ligand for nanoparticle synthesis.

    Albrecht, Ken / Taguchi, Maki / Tsukamoto, Takamasa / Moriai, Tatsuya / Yoshida, Nozomi / Yamamoto, Kimihisa

    Chemical science

    2022  Volume 13, Issue 20, Page(s) 5813–5817

    Abstract: Synthesizing metal clusters with a specific number of atoms on a preparative scale for studying advanced properties is still a challenge. The dendrimer templated method is powerful for synthesizing size or atomicity controlled nanoparticles. However, not ...

    Abstract Synthesizing metal clusters with a specific number of atoms on a preparative scale for studying advanced properties is still a challenge. The dendrimer templated method is powerful for synthesizing size or atomicity controlled nanoparticles. However, not all atomicity is accessible with conventional dendrimers. A new tailor-made phenylazomethine dendrimer (DPA) with a limited number of coordination sites (
    Language English
    Publishing date 2022-03-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 2559110-1
    ISSN 2041-6539 ; 2041-6520
    ISSN (online) 2041-6539
    ISSN 2041-6520
    DOI 10.1039/d1sc05661a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Highly Accurate Synthesis of Quasi-sub-nanoparticles by Dendron-assembled Supramolecular Templates.

    Tsukamoto, Takamasa / Tomozawa, Kosuke / Moriai, Tatsuya / Yoshida, Nozomi / Kambe, Tetsuya / Yamamoto, Kimihisa

    Angewandte Chemie (International ed. in English)

    2022  Volume 61, Issue 8, Page(s) e202114353

    Abstract: Quasi-sub-nanomaterials (1-3 nm) have been predicted to exhibit unique properties originating from the gray structures considered both bulk solids and molecules, while their synthesis is extremely difficult. The present study describes a new template ... ...

    Abstract Quasi-sub-nanomaterials (1-3 nm) have been predicted to exhibit unique properties originating from the gray structures considered both bulk solids and molecules, while their synthesis is extremely difficult. The present study describes a new template synthesis method for quasi-sub-nanosized materials using a combination of coordination chemistry and polymer chemistry. Utilizing self-assembly of guest basic phenylazomethine dendron units onto host acidic core units with six tritylium cations, the dendron-assembled supramolecules were constructed easily and quantitatively without costly techniques. This huge supramolecular capsule accumulating multiple acidic rhodium salts in its basic ligands enabled a precise synthesis of rhodium particles via formation of multinuclear complexes. The obtained particles (Rh
    Language English
    Publishing date 2022-01-27
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2011836-3
    ISSN 1521-3773 ; 1433-7851
    ISSN (online) 1521-3773
    ISSN 1433-7851
    DOI 10.1002/anie.202114353
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  8. Article ; Online: Selective Hydroperoxygenation of Olefins Realized by a Coinage Multimetallic 1-Nanometer Catalyst.

    Moriai, Tatsuya / Tsukamoto, Takamasa / Tanabe, Makoto / Kambe, Tetsuya / Yamamoto, Kimihisa

    Angewandte Chemie (International ed. in English)

    2020  Volume 59, Issue 51, Page(s) 23051–23055

    Abstract: The science of particles on a sub-nanometer (ca. 1 nm) scale has attracted worldwide attention. However, it has remained unexplored because of the technical difficulty in the precise synthesis of sub-nanoparticles (SNPs). We recently developed the "atom- ... ...

    Abstract The science of particles on a sub-nanometer (ca. 1 nm) scale has attracted worldwide attention. However, it has remained unexplored because of the technical difficulty in the precise synthesis of sub-nanoparticles (SNPs). We recently developed the "atom-hybridization method (AHM)" for the precise synthesis of SNPs by using a suitably designed macromolecule as a template. We have now investigated the chemical reactivity of alloy SNPs obtained by the AHM. Focusing on the coinage metal elements, we systematically evaluated the oxidation reaction of an olefin catalyzed by these SNPs. The SNPs showed high catalytic performance even under milder conditions than those used with conventional catalysts. Additionally, the hybridization of multiple elements enhanced the turnover frequency and the selectivity for the formation of the hydroperoxide derivative. We discuss the unique quantum-sized catalysts providing generally unstable hydroperoxides from the viewpoint of the miniaturization and hybridization of materials.
    Language English
    Publishing date 2020-10-12
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2011836-3
    ISSN 1521-3773 ; 1433-7851
    ISSN (online) 1521-3773
    ISSN 1433-7851
    DOI 10.1002/anie.202010190
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  9. Article ; Online: Quantum Materials Exploration by Sequential Screening Technique of Heteroatomicity.

    Tsukamoto, Takamasa / Kuzume, Akiyoshi / Nagasaka, Masanari / Kambe, Tetsuya / Yamamoto, Kimihisa

    Journal of the American Chemical Society

    2020  Volume 142, Issue 45, Page(s) 19078–19084

    Abstract: Subnanoparticles (SNPs) exhibit unique properties and functions due to their extremely small particle sizes which extend into the quantum scale. Although the synthesis of SNPs requiring precise control of atomicity and composition has not been ... ...

    Abstract Subnanoparticles (SNPs) exhibit unique properties and functions due to their extremely small particle sizes which extend into the quantum scale. Although the synthesis of SNPs requiring precise control of atomicity and composition has not been accomplished, we recently developed an atom-hybridization method (AHM) that realizes such atomic-level control using a macromolecular template. As a next step in the quest for innovative quantum materials, the practical creation of functional subnanomaterials will become a central subject. In this study, we established a new screening technique for functional SNPs by focusing on the simple indium-tin binary system with sequential compositions using the latest AHM. As a result, it was revealed that a thermodynamically unstable indium species was produced only at a certain composition leading to a durable luminescent function. Such a phenomenon in subnanosized substances will play an important role in the development of the as-yet-unknown field of quantum materials.
    Language English
    Publishing date 2020-09-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.0c06653
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    In stock of ZB MED Bonn / Germany

    Z 4' 55/32: Show issues
    Z 7.3: Show issues

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

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

    Nature communications

    2019  Volume 10, Issue 1, Page(s) 3727

    Abstract: The periodic table has always contributed to the discovery of a number of elements. Is there no such principle for larger-scale substances than atoms? Many stable substances such as clusters have been predicted based on the jellium model, which usually ... ...

    Abstract The periodic table has always contributed to the discovery of a number of elements. Is there no such principle for larger-scale substances than atoms? Many stable substances such as clusters have been predicted based on the jellium model, which usually assumes that their structures are approximately spherical. The jellium model is effective to explain subglobular clusters such as icosahedral clusters. To broaden the scope of this model, we propose the symmetry-adapted orbital model, which explicitly takes into account the level splittings of the electronic orbitals due to lower structural symmetries. This refinement indicates the possibility of an abundance of stable clusters with various shapes that obey a certain periodicity. Many existing substances are also governed by the same rule. Consequently, all substances with the same symmetry can be unified into a periodic framework in analogy to the periodic table of elements, which will act as a useful compass to find missing substances.
    Language English
    Publishing date 2019-08-19
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-019-11649-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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