Development of molecular functional compounds through electron-proton manipulation

2020 Fiscal Year Final Research Report

• Project/Area Number: 17H01197
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Inorganic chemistry
• Research Institution: Kyushu University
• Principal Investigator: Sato Osamu 九州大学, 先導物質化学研究所, 教授 (80270693)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Keywords: プロトン

Outline of Final Research Achievements

We aim to attain the photo-control of the proton transfer in molecular compounds. We achieved the light-induced proton transfer and the trapping of the light-induced excited proton transfer state using the proton-transfer coupled spin transition (PCST) mechanism for Fe(II) compounds through a precise molecular design. It should be noted that several molecular compounds, in which proton-transfer coupled electron transfer (PCET) is induced, have recently been synthesized. However, although spin and charge are two important aspects of electrons, no previous study has succeeded in demonstrating proton-transfer coupled spin transition (PCST) behavior in crystalline materials. The Fe(II) complexes are the first examples to display thermal and photoinduced PCST behavior.

Free Research Field

光化学

Academic Significance and Societal Importance of the Research Achievements

プロトン移動を温度、及び光により制御できる物質を開発した。プロトニクスデバイスにおけるプロトン制御分子としての応用が期待される。