2022 Fiscal Year Research-status Report
Development of new high Tc superconductors through electron injection of hybrid pi-electron nanocarbon architectures
| Project/Area Number |
22K18693
|
|---|
| Research Institution | Osaka Metropolitan University |
|---|
Principal Investigator |
プラシデス コスマス 大阪公立大学, 大学院工学研究科, 教授 (90719006)
|
|---|
| Project Period (FY) |
2022-06-30 – 2024-03-31
|
| Keywords | Superconductivity / Molecular nanocarbons / Co-crystals / Charge injection / 2-dimensional |
|---|
| Outline of Annual Research Achievements |
The project has been targeting the synthesis of new crystalline materials with two-dimensional-layered hybrid architectures comprising C60 and polyaromatic hydrocarbon building blocks. This has been successful for the polyaromatic hydrocarbon, triphenylene. The resulting strongly-correlated Mott insulating phases have been structurally characterized down to cryogenic temperatures and reveal unique architectures and a variety of phase transitions. They have now been chemically manipulated to afford crystalline reduced materials with two-dimensional architectures. Their properties focusing on metallicity and superconductivity are being actively pursued.
|
| Current Status of Research Progress |
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
Reason
The purpose of the project was to assemble unsaturated hydrocarbons of varying size, shape and electronic state together with C60 to generate new molecular electronic materials. This has been successfully carried out to an advanced stage. In particular, the resulting low-dimensional strongly correlated architectures
are being manipulated chemically to investigate the possibility of switching on superconductivity.
|
| Strategy for Future Research Activity |
The research plan for the future years consists of two integrated components.
(A) Chemical synthesis.
We will create hybrid co-crystals of PAHs of varying size and shape and C60 and initiate attempts to intercalate them with alkali metals to produce electron-doped systems.
(B) Structural analysis.
We will carry out precise structural determination at low temperature and/or high pressure with synchrotron X-ray and neutron diffraction.
|
| Causes of Carryover |
The original targets of this research project are rapidly achieved and we are proceeding in targeting the availability of the hybrid C6o-polyaromatic hydrocarbon materials in large-quantities to allow full physical characterization. The next steps involve more elaborate structural and physical characterization as a function of temperature as well as the utilization of high pressure to enhance the properties. Progress along these lines is extremely challenging. We anticipate that the significant resources necessary to proceed with the implementation, including those carried over will allow completion of the project.
|
