| Project/Area Number |
22K20526
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
0501:Physical chemistry, functional solid state chemistry, organic chemistry, polymers, organic materials, biomolecular chemistry, and related fields
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| Research Institution | Chiba University |
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Principal Investigator |
DATTA Sougata 千葉大学, 大学院工学研究院, 特任研究員 (60965036)
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| Project Period (FY) |
2022-08-31 – 2024-03-31
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| Project Status |
Completed (Fiscal Year 2023)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | Supramolecular polymer / Nanotoroid / barbiturate / secondary nucleation / catenane / supramolecular polymer / nanotroid / nanostructures / topological structures / mechanical bonding / self-assembly / supramolecular chemistry / Supramolecular Polymer / 2D-Nanomaterial / Interlocked Assembly / Ring / Interfacial Synthesis |
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| Outline of Research at the Start |
This research is a vital step for creating chainmail-type mesoscale architectures, thereby offering opportunities for future exploration of the properties of a new generation of 2D nanomaterials. This project will advance the area of 2D molecular architectonics toward mesoscale robotics.
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| Outline of Final Research Achievements |
In this study, we developed a unique methodology to control the catenation tendency for self-assembled toroidal nanoaggregates of barbituric acid molecules by tuning the inner void space of nanotoroids and the frequency of secondary nucleation. A reduction in the inner diameter of the nanotoroids results in nano-[2]catenanes in a high yield due to enhanced secondary nucleation and subsequent steric suppression of further catenation. Furthermore, we demonstrated the influence of seed topologies on seeded supramolecular polymerization by studying distinct kinetics of secondary nucleation and elongation using unique open- and close-ended seeds. These results will provide new molecular design guidelines for developing mesoscale functional materials.
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| Academic Significance and Societal Importance of the Research Achievements |
Efficient surface-catalyzed heterogeneous nucleation combined with nanospace engineering in toroidal molecular assembly enables precise control over the synthesis of self-assembled catenated materials. This research project undoubtedly paves new avenues for exploring advanced mesoscale materials.
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