Exploration of Nanoporous Liquid Crystals Realizing Size-selective Transporting Functional Materials

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K05493
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 34010:Inorganic/coordination chemistry-related
• Research Institution: Nagoya University
• Principal Investigator: Kawano Shin-ichiro 名古屋大学, 理学研究科, 講師 (10508584)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 液晶 / 大環状化合物 / 分子認識 / ホストーゲスト化学

Outline of Final Research Achievements

Well-defined nanospaces in nanoporous materials are of significant interests due to their promising applications such as separation, transportation, and specific chemical reactions. The molecular structure containing lithium and salphen, which are a part of the liquid-crystalline macrocycle, as well as the dynamic properties in solution of the molecule were investigated by X-ray crystallographic analysis and VT-NMR measurement. Furthermore, we successfully prepared periodic monolayer arrays of discrete C60s generated on an atomically flat Au(111) surface with the aid of a template adlayer. The template was a two-dimensional (2D) array of molecular pits prepared on an Au(111) surface through 2D crystallization of shape-persistent macrocycles composed of four carbazole and four salphens/Ni-salphens with a 1 nm hollow. The periodic pattern of C60s on the surface was thermally stable up to approximately 200 °C, even under ambient pressure.

Free Research Field

超分子化学、材料科学、ナノ構造

Academic Significance and Societal Importance of the Research Achievements

本研究で開発した液晶性大環状分子とその一連の化合物は、その自己集合構造により、一義的なサイズや化学的性質をもつ特異なナノ空間をもつ液晶物質や、二次元多孔性物質の創製に成功した。これらは、特異的にリチウムオンを捕捉する分子構造の解明、フラーレンなどの機能性分子の分子認識と精密配列化を可能とした。本研究により、イオンを伝導するソフトな多孔性物質の創製、電子リソグラフィーを超える分解能でフラーレンの精密の配列化を実現したものであり、多孔性ソフトマテリアルの機能化や新規特性を機能性界面の展望を大きく前進させたため、学術的に重要な意義があり、社会的にインパクトの高い研究成果といえる。