State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, P.R. China.
Ma' anshan High-Tech Research Institute of Nanjing University, Ma' anshan, 238200, P.R. China.
Chemistry. 2023 Jun 22;29(35):e202300410. doi: 10.1002/chem.202300410. Epub 2023 May 8.
Cuboid, a basic geometric structure, has been widely applied in architecture and mathematics. In chemistry, the introduction of cuboid structures always provides a specific structural shape, enhances the stability of the structure and improves the performance of materials. Herein, a simple strategy exploiting self-discrimination to construct a cuboid-stacking crystal material is proposed, in which a chiral macrocycle (TBBP) based on Tröger's base (TB) and benzophenone (BP) was synthesized as the building element of the cuboid. The cuboid is designed to be transformable compared with cuboid structures in previous work. For this reason, it is considered that the cuboid-stacking structure can be transformed through external stimulation. Iodine vapor is selected as the external stimulus to transform the cuboid-stacking structure due to the favorable interaction between iodine and the cuboid. The changes in the stacking mode of TBBP is studied by single-crystal X-ray diffraction (SCXRD) and powder X-ray diffraction (PXRD). To our surprise, this Tröger's base-based cuboid shows strong iodine adsorption capacity up to 3.43 g g and exhibits potential as a crystal material for iodine adsorption.
盒状结构是一种基本的几何结构，在建筑和数学领域得到了广泛应用。在化学中，引入盒状结构通常会提供特定的结构形状，增强结构的稳定性并提高材料的性能。在这里，我们提出了一种利用自识别构建盒状堆积晶体材料的简单策略，其中基于 Tröger 碱（TB）和二苯甲酮（BP）的手性大环（TBBP）被用作盒状结构的构筑单元。与之前工作中的盒状结构相比，所设计的盒状具有可变形性。因此，认为盒状堆积结构可以通过外部刺激进行转化。选择碘蒸气作为外部刺激来转化盒状堆积结构，因为碘与盒状之间存在有利的相互作用。通过单晶 X 射线衍射（SCXRD）和粉末 X 射线衍射（PXRD）研究了 TBBP 的堆积方式的变化。令我们惊讶的是，这种基于 Tröger 碱的盒状结构表现出很强的碘吸附能力，高达 3.43g/g，有望成为一种用于碘吸附的晶体材料。
