Grant-in-Aid for Scientific Research on Innovative Areas FY2017-2021Hybrid Catalysis

Kazuki Sada » Japanese

Affiliation Department of Chemistry, Faculty of Science, Hokkaido University
Position Professor
Contact Email
HP http://wwwchem.sci.hokudai.ac.jp/~matchemS/english/index.html
Speciality Supramolecuar Chemistry, Polymer Science, Crystal Engineering, Soft Matter
Keyword Gels, Stimili-Sensitive Polymers, Metal Organic Frameworks, Catalysis, Biomolecular Motors, Active Self-Organization, Aggregation-induced Emission
Institute The Chemical Society of Japan, American Chemical Society, The Society of Polymer Science, Japan,

Abstract

Based on our design of thermo-responsive polymer systems in organic solvents, an organic catalyst or a transition metal catalyst will be introduced into the polymer chain of the thermo-responsive polymers by copolymerization to construct an on-demand hybrid catalyst. Controlling dissolution or aggregation of the thermo-responsive part by the presence or absence of appropriate pseudo-solvating molecules, called effectors, will provide controlled ON-OFF catalytic ability of the catalytic part. The structural parameters of the on-demand hybrid catalysts such as molecular weight and copolymerization ratios will be optimized for drastic ON-OFF cut-off. Moreover, parallel use of these on-demand catalysts should access to more sophisticated control of some chemical reactions. In particular, I also aim to construct a catalyst that exhibits hetero-allosteric behavior by designing the on-demand hybrid catalyst in which the effector can be transformed to be a non-effector.

Achievement

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Original papers

  • "Metal-Organic Framework Tethering pH- and Thermo-Responsive Polymer for ON-OFF Controlled Release of the Guest Molecule"
    Nagata, S.; Kokado, K.; Sada, K.
    CrystEngComm, 2/14/2020, 22(6), 1106-1111
  • "Supramolecularly Designed Thermoresponsive Polymers in Different Polymer Backbones"
    Naya, M.; Kokado, K.; Landenberger, K. B; Kanaoka, S., Aoshima, S.; Sada, K.
    Macromol. Chem. Phys., 1/29/2020, 221(5), 1900455
  • "Synthesis of pyramidal tetraarylborate pentads"
    Sakamoto, N.; Kokado, K.; Sada, K.
    New J. Chem., 10/7/2019, 43(37), 14853-14858
  • "Step-growth copolymerization between immobilized monomer and mobile monomer in metal‐organic frameworks"
    Anan, S.; Mochizuki, Y.; Kokado, K.; Sada, K.
    Angew. Chem. Int. Ed., 6/11/2019, 58(24), 8018-8023

Collaborative Research