Rational Construction of Asymmetric Porous Structure and Cooperative Control of Symmetry

2021 Fiscal Year Final Research Report

• Project Area: Coordination Asymmetry: Design of Asymmetric Coordination Sphere and Anisotropic Assembly for the Creation of Functional Molecules
• Project/Area Number: 16H06519
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Kyushu University
• Principal Investigator: Ohba Masaaki 九州大学, 理学研究院, 教授 (00284480)
• Project Period (FY): 2016-06-30 – 2021-03-31
• Keywords: 多孔性金属錯体 / 配位高分子 / MOF / 磁気特性 / 発光特性 / 脂質膜 / アモルファス

Outline of Final Research Achievements

In this project, asymmetric porous structures formed by the integration of metal complexes were used as a platform to create unique functions and properties by utilizing flexible asymmetric space and changes in the arrangement and phase of guest molecules.
We have established original in situ measurement systems for magnetism, powder X-ray diffraction, emission spectra, Raman and IR spectra, etc. under pressure-controlled guest atmosphere, and mainly proceeded (1) macroscopic polarity control by cooperative changes in space and guest molecular arrangement and (2) control of physical properties triggered by structural changes with loss of symmetry, by using cyano-bridged MOFs with flexible coordination structures as key materials.

Free Research Field

錯体化学

Academic Significance and Societal Importance of the Research Achievements

本研究では、金属錯体を基盤に作り上げた「非対称な空間」において、空間構造の変化、ならびに空間内に取り込んだゲスト分子の配列や相の変化を利用して、既存の材料にはない特異な機能・物性の創出を目指した。
非対称な金属錯体の集積に加えて、金基盤や脂質膜表面を利用して合理的な非対称空間構築法を開発し、空間構造ならびにゲスト分子と物性・機能の相関の研究を系統的に展開した。ゲスト分子の吸脱着に連動した「構造の極性と次元性変換」、「非晶質-結晶相変換」、脂質膜表面での配位高分子膜形成による「異方的空間の構築」などの特性の発現と相関機構や変形機構の解明に成功し、新材料開発に繋がる空間の科学の深化に貢献した。