A Hydrogen-Bonded, Hexagonally Networked, Layered Framework with Large Aperture Designed by Structural Synchronization of a Macrocycle and Supramolecular Synthon

Precision Chemistry Pub Date : 2024-04-12 DOI:10.1021/prechem.4c00019

Hiroki Yoshimura, Ryusei Oketani, Miki Naruoka, Norimitsu Tohnai and Ichiro Hisaki*,

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Abstract

To develop porous organic frameworks, precise control of the stacking manner of two-dimensional porous motifs and structural characterization of the resultant framework are important. From these points of view, porous molecular crystals formed through reversible intermolecular hydrogen bonds, such as hydrogen-bonded organic frameworks (HOFs), can provide deep insight because of their high crystallinity, affording single-crystalline X-ray diffraction analysis. In this study, we demonstrate that the stacking manner of hydrogen-bonded hexagonal network (HexNet) sheets can be controlled by synchronizing a homological triangular macrocyclic tecton and a hydrogen-bonded cyclic supramolecular synthon called the phenylene triangle. A structure of the resultant HOF was crystallographically characterized and revealed to have a large channel aperture of 2.4 nm. The HOF also shows thermal stability up to 290 °C, which is higher than that of the conventional HexNet frameworks.

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通过大循环和超分子合成物的结构同步设计出具有大孔径的氢键六边形网络化层状框架

要开发多孔有机框架，必须精确控制二维多孔图案的堆叠方式，并对所形成的框架进行结构表征。从这些角度来看，通过分子间可逆氢键形成的多孔分子晶体，如氢键有机框架（HOFs），由于其结晶度高，可进行单晶 X 射线衍射分析，因此可以提供深入的见解。在这项研究中，我们证明了氢键六边形网络（HexNet）薄片的堆积方式可以通过同步同源三角形大环构造体和氢键环状超分子合成体（称为亚苯基三角形）来控制。对由此产生的 HOF 结构进行了晶体学表征，发现它具有 2.4 纳米的大通道孔径。HOF 还具有高达 290 °C 的热稳定性，高于传统的 HexNet 框架。

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Precision Chemistry 精密化学技术-

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0.80

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0.00%

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期刊介绍： Chemical research focused on precision enables more controllable predictable and accurate outcomes which in turn drive innovation in measurement science sustainable materials information materials personalized medicines energy environmental science and countless other fields requiring chemical insights.Precision Chemistry provides a unique and highly focused publishing venue for fundamental applied and interdisciplinary research aiming to achieve precision calculation design synthesis manipulation measurement and manufacturing. It is committed to bringing together researchers from across the chemical sciences and the related scientific areas to showcase original research and critical reviews of exceptional quality significance and interest to the broad chemistry and scientific community.

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