2021 Fiscal Year Final Research Report
Construction and Precise Control of the Highly Functionalized Assembly for Giant Nanographenes using "Molecular Container" Method
Project/Area Number |
19H02560
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 28030:Nanomaterials-related
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Research Institution | Kumamoto University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
吉沢 道人 東京工業大学, 科学技術創成研究院, 教授 (70372399)
深港 豪 熊本大学, 大学院先端科学研究部(工), 准教授 (80380583)
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Project Period (FY) |
2019-04-01 – 2022-03-31
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Keywords | ナノグラフェン / ミセル型カプセル / 電極界面 / 金属フタロシアニン / 走査型トンネル顕微鏡 / 原子間力顕微鏡 |
Outline of Final Research Achievements |
We have established a methodology for encapsulating water-insoluble nanographenes in water-soluble micellar capsules and transporting the nanographenes to the surface of gold and/or graphite. Particularly, we succeeded to obtain the molecular resolution scanning tunneling microscopy (STM) images of the triangle-shaped C96H30 and the three-leafed C150H42, and hexagonal C222H42. We also succeeded to find the structural changes of the ovalene adlayer on Au(111) at the electrochemical interface and one of the thiolate molecules into the gap site, by the so-called “molecular planting”. In addition to the results related to the adsorption and organization of hydrophobic molecules, we also focused on metal complex molecules such as iron phthalocyanine (FePc). The FePcs-encapsulating capsules exhibit the function as a “nanoreactor” that promotes the oxygen reduction reaction (ORR).
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Free Research Field |
表面科学・電気化学
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Academic Significance and Societal Importance of the Research Achievements |
これまで機能性を有するパイ電子化合物(特に疎水性が高い多環系化合物)の多くは水溶液中はおろか有機溶媒への極めて低い溶解性から溶液中における分子自体の電気化学特性はじめ種々の基礎物性についてはほぼ未解明であったが,本研究で確立した手法によって未解明な化合物の物性を理解できるようになった点は大変意義深く,また水溶化できたことで自然環境に必ずしも良い影響を及ぼさない有機溶媒の使用を削減するとともに,実験者の健康上の安全性(負荷低減)にも繋がった。
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