However, to develop a new type of linkages has been a great challenge. We herein report the first two COFs using aminal as the linkages. These two COFs have been synthesized by condensation of secondary amine and aldehyde. They crystallize in cpi net, which is a new topology for COFs. The aminal linkage is found to favor reservation of photophysical property of the monomers due to its tetrahedral
新的连接
化学将使共价有机框架 (COF) 不仅具有结构多样性,而且还具有迷人的特性。然而,开发一种新型的联系一直是一个巨大的挑战。我们在此报告前两个 COF 使用
氨基作为联系。这两种 COF 是通过仲胺和醛缩合合成的。它们在 cpi 网络中结晶,这是 COF 的新拓扑。由于其四面体几何形状和非共轭特征,发现
氨基键有利于保留单体的光物理性质。这些
氨基-COF在中性和碱性条件下表现出良好的热稳定性和高
化学稳定性。