| Project/Area Number |
18K04724
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 26030:Composite materials and interfaces-related
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| Research Institution | University of Yamanashi |
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Principal Investigator |
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | 金ナノロッド / 自己組織化 / タンパク質 / キラル組織体 / シリカコーティング / コアシェル構造 / 熱安定性 / CD活性 / side-by-side型会合 / end-to-end型会合 / 金属ナノロッド / キラル / 不斉記憶 |
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| Outline of Final Research Achievements |
The synthesis of a silica shell over chiral gold-nanorod assemblies produced using proteins as chiral sources and their thermal stabilization for chirality were investigated. We successfully prepared chiroptical core-shell nanoparticles by the surface silica coating onto chiral-organized arrays of gold nanorods by plasma proteins in colloidal solution. The core-shell nanoparticles contained plural gold nanorods in the core and were removed chiral proteins. Also, the chiroptical activity of the core-shell nanoparticles was thermally stabilized by the silica coating. Thus, stable silica-coated chiral gold-nanorod assemblies with plasmonic circular dichroism response, which crucial for practical application of chiral nanomaterials, can be fabricated by the core-shell nanostructures.
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| Academic Significance and Societal Importance of the Research Achievements |
光学活性を有する複合ナノ材料は安定性が高く、多くの情報を記憶でき、実用化が十分期待される物質である。そこで本研究では、多様性を持つタンパク質によって棒状の金微粒子をらせん状に配列させ、そのナノ界面を無機系シリカでコーティングすることで頑丈で安定的に光学的不斉シグナルを発する、即ち不斉記憶された複合ナノ材料を創出した。これは、光学的マルチ情報を組み込んだ新たなナノマテリアルと成り得るために学術的に意義深い。
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