2021 Fiscal Year Final Research Report
Creation of Carbon Nanocages Targeting Single Molecule Chemistry
| Project/Area Number |
20K15260
|
|---|
| Research Category |
Grant-in-Aid for Early-Career Scientists
|
| Allocation Type | Multi-year Fund |
|---|
| Review Section |
Basic Section 33010:Structural organic chemistry and physical organic chemistry-related
|
|---|
| Research Institution | Kyoto University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2020-04-01 – 2022-03-31
|
| Keywords | ナノカーボン / π共役系 / フラーレン |
|---|
| Outline of Final Research Achievements |
For the expansion of effective inner space inside fullerenes, we developed two methods, i.e., (1) synthesis of double-holed fullerenes by the use of releasing the cage strain and (2) introduction of a C2 unit into the carbon framework of cage-opened fullerene derivatives. Following the former approach, we obtained elbow-shaped carbon nanocages with different directionality, whose structures were determined by X-ray crystallography. In the latter case, C60 and C70, used as starting materials, were found to be transformed into C65N and C75N via only two steps. In addition, the encapsulated H2O molecule was confirmed to lie at the position where it gains a substantial stabilization energy via interactions with the fullerene cage.
|
| Free Research Field |
構造有機化学
|
| Academic Significance and Societal Importance of the Research Achievements |
サブナノ空間への小分子の導入は，構造や相互作用が究極的に規定された単純な物理モデルへと落とし込むことができ，これまでに構築された理論や物理現象を観測する上で極めて有用である．しかし，そのような実験系モデルを構築する手法は限られている．その代表例としてπ共役分子であるフラーレンが挙げられるが，それらが固有にもつサブナノ空間に包摂できる分子種（または適用範囲）はフラーレンの実効体積によって大きな制約を受ける．すなわち，フラーレンの有効内部空間の拡張を達成したという本研究の成果は，こうした制約を打破する一手になると期待され，これまでに実現が不可能であった新奇な超分子システムを構築できると考えられる．
|
