京都大学Shuhei Furukawa研究组近日取得一项新成果。经过不懈努力，他们开发出三维范德华开放框架。这一研究成果发表在2025年3月18日出版的国际学术期刊《自然-化学》上。

在这里，课题组展示了范德华相互作用使机器人三维框架的构建成为可能，被称为范德华开放框架（WaaFs）。成功合成WaaFs的关键是制备尺寸大于2纳米作为构建块，并将其打包成具有大外在孔隙度的稀疏金刚石网络。由多个平面部分组成的明确的面增加了分子间的接触面积，使相互作用能达到400kj mol ^-1以上。课题组发现WaaFs具有高热稳定性和高比表面积，以及具有可逆性质的框架组装。

据介绍，开放框架材料是通过强键连接分子组分而构建的。一般认为，非共价相互作用太弱，无法保持构件并产生稳定的开放空隙。

附：英文原文

Title: Three-dimensional van der Waals open frameworks

Author: Tokuda, Shun, Furukawa, Shuhei

Issue&Volume: 2025-03-18

Abstract: Open-framework materials are constructed by connecting molecular components via strong bonds. It is generally believed that non-covalent interactions are too weak to hold the building blocks and generate stable open voids. Here we show that van der Waals interactions enable the construction of robust three-dimensional frameworks, referred to as van der Waals open frameworks (WaaFs). The key to successful synthesis of WaaFs is the use of octahedral metal–organic polyhedra with size larger than 2nm as building blocks and their packing into a sparse diamond network with large extrinsic porosity. The well-defined faces composed of multiple planar moieties increase the intermolecular contact area to achieve an interaction energy above 400kJmol1. We show that the WaaFs exhibit high thermal stability and high specific surface area as well as framework assembly with a reversible nature.

DOI: 10.1038/s41557-025-01777-0

Source: https://www.nature.com/articles/s41557-025-01777-0