Development of molecular-single-crystalline-catalyst cartridges

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K18961
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 33:Organic chemistry and related fields
• Research Institution: Osaka University
• Principal Investigator: Hisaki Ichiro 大阪大学, 大学院基礎工学研究科, 教授 (90419466)
• Project Period (FY): 2021-07-09 – 2024-03-31
• Keywords: 水素結合 / 多孔質構造体 / 単結晶

Outline of Final Research Achievements

Isostructural porous crystals with various pore diameters can be used as a library of porous materials. However, it has been difficult to construct a such library of single-crystalline porous organic crystals with channel structures. In this study, by utilizing shape-fitted stacking of twisted π-conjugated molecules, we succeeded in constructing rigid porous organic crystals that can maintain single crystallinity after activation, even with simple hydrogen bonding dimerization of carboxy groups. These results can be used as a guideline for constructing single-crystalline porous crystals, and are expected to be applied to reaction channels using single crystals by finding conditions to control the morphology of single crystals in the future.

Free Research Field

有機結晶化学

Academic Significance and Societal Importance of the Research Achievements

多様な分子を用いることで、チャネル空間の形状、開口サイズおよびチャネル表面の性質を必要に応じて変調させた多孔質材料が構築できるが、これまでは、十分な大きさのチャネル空間を有した「堅牢な有機結晶」を、非共有結合によって構築することは困難であり、特に同型構造をもつライブラリー構築に指針は無かった。これに対し、カルボン酸の2量化という単純な分子結合モチーフをπ共役骨格の剛直な積層構造と同時に用いるという普遍性のある手法で、十分な大きさのチャネル空間を有した「堅牢な有機結晶」を構築できた点に学術的な意義がある。