| 研究課題/領域番号 |
21F21337
|
|---|
| 配分区分 | 補助金 |
|---|
| 研究機関 | 国立研究開発法人理化学研究所 |
|---|
研究代表者 |
相田 卓三 国立研究開発法人理化学研究所, 創発物性科学研究センター, グループディレクター (00167769)
|
|---|
| 研究分担者 |
SU ZEBIN 国立研究開発法人理化学研究所, 創発物性科学研究センター, 外国人特別研究員
|
|---|
| 研究期間 (年度) |
2021-11-18 – 2024-03-31
|
| キーワード | Supramolecyular polymer / Phase seperation / Self-assembly |
|---|
| 研究実績の概要 |
I have successfully designed and synthesized a library of novel molecules (or supramolecular monomers). Each supramolecular monomer contains four funcional parts, including a gunidinium group, a carboxylate group and two thermodynamically incompatible side chains. As a proof of concept, a polystyrene chain and a polysiloxane are utilized as the side chains. These supramolecular monomers polymerized into supramolecular polymers via salt-bridge interactions between a gunidinium group and a carboxylate group. These supramolecular polymers further self-assemble into various ordered nanostructures by microphase separation due to the thermodynamically incompatible side chains. These ordered nanostructures are unambiguously characterized by SAXS in reciprocal space and TEM in real space.
|
| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
I am now doing the scale-up synthesis of monomers. A series of solid-state supramolecular polymeric films have been prepared by cast-coating for by indentation, tension, and rheology tests, from which I can obtain the mechanical properties of supramolecular polymers with varied nanostructures, such as Young’s modulus, storage modulus, and loss modulus. Moreover, I am collaborating with our colleagues in Riken for in-situ TEM observation of the phase-transition of supramolecular polymers. I am preparing thin-film smaples by ultra-microtone methods, and will do the TEM expeiment on varying temerature.
|
| 今後の研究の推進方策 |
I am going to systematically investigate the phase diagram of the supramolecular polymers in the solid state by changing the molecular weight of both polystyrene and polysiloxane. Therefore, I am going to synthesized polystyrene side chains with different molecular weight by ATRP polymerization and functionalized these polystyrenes by alkyne groups. Similarly, polysiloxanes with different molecular weights will also be functionalized by alkyne groups. Based on these new synthesized polystyrenes and polysiloxanes, I can systematically change the volume fraction of polystyrene in our supamolecular monomers and polymers. Therefore, I am going to complete the phase diagram of the solid-state supramolecular polymers.
|
