2020 Fiscal Year Final Research Report
Design and Exploring Photonic/Electronic Functions of Asymmetric Nanoparticles System Based on Surface Coordination
| Project Area | Coordination Asymmetry: Design of Asymmetric Coordination Sphere and Anisotropic Assembly for the Creation of Functional Molecules |
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| Project/Area Number |
16H06522
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| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Nara Institute of Science and Technology |
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Principal Investigator |
Nakashima Takuya 奈良先端科学技術大学院大学, 先端科学技術研究科, 准教授 (70379543)
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| Project Period (FY) |
2016-06-30 – 2021-03-31
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| Keywords | キラリティー / ナノ粒子 / クラスター / 自己組織化 |
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| Outline of Final Research Achievements |
Extensive research has been conducted on chirality-related phenomena in organic molecular systems including metal complexes and polymers. Contrarily, the subject of chirality in inorganic nanomaterials has emerged only in the last two decades, while some minerals have long been known to possess intrinsically chiral crystalline structures, as represented by quartz. Semiconductor nanocrystals and metal clusters with intrinsic chirality (crystallographic chirality) constitute an important part of novel chiral nanomaterials. We have made efforts to control the handedness in such chiral nanomaterials through interactions with organic molecules including chiral ligands. The handedness of atomic arrangement in the nanoparticles and clusters could be regulated by means of control of energy landscape in the nanoparticle growth. The structural control could be a result of interplay of chiralities between organic ligands and inorganic compounds.
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| Free Research Field |
光化学
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| Academic Significance and Societal Importance of the Research Achievements |
無機物質の特徴は構造堅牢性にある。応答性や柔軟性などの構造制御性は有機物の高次構造や金属錯体の配位構造特有のものであり、無機結晶とは縁遠い性質であるというのが共通認識とされてきた。本課題では、無機結晶の構造制御剤としてキラル有機配位子を用い、ナノ粒子の構造非対称化に取り組み、ナノ粒子特有の高度な構造制御性を見出した。すなわち、無機ナノ結晶やクラスターにおいて、応答性を含めた動的構造制御性を実証できたことに学術的意義を有する。
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