| Project/Area Number |
13450367
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Synthetic chemistry
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
AIDA Takuzo The University of Tokyo, Graduate School of Engineering, Professor, 大学院・工学系研究科, 教授 (00167769)
|
|---|
| Project Period (FY) |
2001 – 2002
|
| Project Status |
Completed (Fiscal Year 2002)
|
| Budget Amount *help |
¥11,500,000 (Direct Cost: ¥11,500,000)
Fiscal Year 2002: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2001: ¥9,000,000 (Direct Cost: ¥9,000,000)
|
|---|
| Keywords | Fullerene / Porphyrin / π-Conjugated System / Suplamolecule / ?共役系 |
|---|
| Research Abstract |
A methylrhodium(III) porphyrin cyclic dimer was found to form supramolecular oscillators with fullerene homo and hetero dimers such as C_<120> and C_<130>, where included fullerenes oscillate back and forth within the porphyrin dimer iso- and anisotropically, respectively, without dissociation. From thermodynamic analysis of the oscillation processes via simulation of VT-NMR spectral profiles of the complexes and saturation transfer experiments, these oscillations are found to be entropy-driven and retarded by the solvent-fullerene interactions.
From SQUID and 2D-ESR measurements, ferromagnetic coupling of spins between paramagnetic copper porphyrin cyclic dimers and La@C_<82> was found upon complextaion of the host and guest molecules, while the dimer alone or with diamagnetic C_<60> does not show any interaction of the spins at the host molecules.
|
