Synthesis and molecular recognition property of emissive macrocyclic host molecules based on their flexibility

2022 Fiscal Year Final Research Report

• Project/Area Number: 21K20533
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0501:Physical chemistry, functional solid state chemistry, organic chemistry, polymers, organic materials, biomolecular chemistry, and related fields
• Research Institution: Kyoto University
• Principal Investigator: Ohtani Shunsuke 京都大学, 工学研究科, 助教 (90911503)
• Project Period (FY): 2021-08-30 – 2023-03-31
• Keywords: 環状分子 / ケイ素 / ヘテロ元素

Outline of Final Research Achievements

We synthesized macrocyclic molecules having silicon atom bridging moiety. In this study, we also isolated macrocyclic molecules with different ring sizes. From single-crystal X-ray analysis, we found that the macrocyclic structures were depending on the ring size. In addition, as initially expected, the UV-vis absorption and emission spectra showed red-shit by replacing bridging atoms. We expect that this study will provide important findings in the fields of structural organic chemistry and photochemistry.

Free Research Field

超分子化学

Academic Significance and Societal Importance of the Research Achievements

すべての状態で同じ発光色を示す『剛直な発光分子』に対して、『柔軟な発光分子』は、容易に構造変化を引き起こし、分子の集合状態に応じて発光色が切り替わる『環境応答性の発光』を示す。一方、この柔軟な発光分子の歴史は浅く、その柔軟性に基づく機能性は単一の分子系で発現するものが大半であった。したがって、二種類以上の分子を組み合わせる、『多成分系』における『柔軟な発光分子』の機能性は未踏領域であり、その機能性や分子設計指針が明らかになれば、新たな原理に基づくセンサー材料の開発が可能である。