Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany.
Centre for Advanced Materials, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 225, 69120, Heidelberg, Germany.
Chemistry. 2018 Aug 6;24(44):11438-11443. doi: 10.1002/chem.201802123. Epub 2018 Jul 6.
In recent years the interest of shape-persistent organic cage compounds synthesized by dynamic covalent chemistry (DCC) has risen, because these cages are potentially interesting for gas sorption or -separation. One such reaction in DCC is the condensation of boronic acids with diols to form boronic esters. Most interestingly, the variety of geometries and sizes for boronic ester cages is much lower than that of, for example, imine-based cages. Here, a small series of shape-persistent [4+6] tetrahedral boronic ester cages is introduced. One cage has a high specific surface area of 511 m g and selectively adsorbs ethane over ethylene and acetylene.
近年来，通过动态共价化学（DCC）合成的形状保持有机笼化合物引起了人们的兴趣，因为这些笼状化合物在气体吸附或分离方面具有潜在的应用价值。DCC 中的一种反应是硼酸与二醇缩合形成硼酸酯。最有趣的是，硼酸酯笼的几何形状和尺寸种类要比例如亚胺基笼的种类少得多。在这里，我们引入了一系列较小的形状保持的[4+6]四面体硼酸酯笼。其中一个笼的比表面积高达 511 m g ，对乙烷的吸附具有选择性，可优先吸附乙烷而不是乙烯和乙炔。
