Studies on Associated Structures of Planar Ion Species and Their Functionalities

2023 Fiscal Year Final Research Report

• Project/Area Number: 20H02692
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 32010:Fundamental physical chemistry-related
• Research Institution: Osaka University
• Principal Investigator: Suzuki Shuichi 大阪大学, 大学院基礎工学研究科, 准教授 (80433291)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: 分子集積体 / 刺激応答性 / 開殻分子 / 発光分子 / 液状化可能なイオン性化合物

Outline of Final Research Achievements

In this study, we promoted the development of ionic molecular association whose functionalities can drastically change in response to external stimulus and/or environment. The specific achievements are as follows:
1.We successfully prepared liquescent ionic open-shell species based on dihydrophenazine, TTF, TCNQ, and Ni(mnt)2 salt, and found that simultaneous modulation of magnetic properties and near-infrared absorption characteristics.
2.We successfully prepared a metal complex salts with intriguing luminescent properties, such as rapid luminescence enhancement upon needle-stick stimulation, changes in emission wavelength significantly depending on the cooling rate after the solid-liquid phase transition, and significant changes in the luminescent properties depending on counter ions.

Free Research Field

機能分子化学

Academic Significance and Societal Importance of the Research Achievements

機能性カチオン種の集積体内および対イオンとの相互作用を適度にコントロールすることで、イオン性化学種が常識的でない柔軟性と運動性を獲得し、その結果により外部環境に対して極めて鋭敏に物性が変化させることに成功した。本研究で明らかになった手法により従来達成できない任意のイオン性分子集積体が構築できる。またそれらに付随してこれまでに報告例のない現象や機能への展開が期待される。