Simultaneous construction of two linkages for the on-surface synthesis of imine-boroxine hybrid covalent organic frameworks.
Simultaneous construction of two linkages for the on-surface synthesis of imine-boroxine hybrid covalent organic frameworks.
复制标题
同时构建两个键用于亚胺-环硼氧烷杂化共价有机框架的表面合成
DOI：
10.1039/c6sc03590f
复制
发表时间：
2017-03-01
期刊：
影响因子：
8.4
通讯作者：
Wang D
中科院分区：
文献类型：
--
作者：
Yue JY;Mo YP;Li SY;Dong WL;Chen T;Wang D
在表面合成过程中，探讨了席夫碱反应和硼酸脱水反应的正交性。在表面合成过程中，探讨了席夫碱反应和硼酸脱水反应的正交性。通过采用不对称取代单体和3重对称单体1，3，5-三(4-氨基苯基)苯(TAPB)一步活化上述两个反应，采用气固界面反应方法在HOPG表面成功构建了高度有序的亚胺-硼氧辛杂化单层共价有机骨架(SCOF)，并用扫描隧道显微镜(STM)对其进行了表征。特别是，间位取代单体与TAPB反应生成了具有风车结构的sCOFB，这是迄今为止报道的第一个具有表面手性的sCOFB。多键一步合成sCOF的展示可以进一步扩大SCOF家族，拓展功能2D有机纳米材料的设计路线。
The orthogonality between the Schiff base reaction and the boronic acid dehydration reaction is explored during the on-surface synthesis process. The orthogonality between the Schiff base reaction and the boronic acid dehydration reaction is explored during the on-surface synthesis process. By activating the above two reactions in one-step and employing asymmetrical substituted monomers and the 3-fold symmetric monomer 1,3,5-tris(4-aminophenyl)benzene (TAPB), highly ordered imine–boroxine hybrid single-layered covalent organic frameworks (sCOFs) have been successfully constructed on HOPG by a gas–solid interface reaction method and characterized by scanning tunnelling microscopy (STM). In particular, the reaction between the meta-substituted monomer and TAPB generates sCOFB with a windmill structure, which is the first sCOF with surface chirality so far reported. The demonstration of the one-step synthesis of multiple linkages to form sCOFs can further enlarge the sCOF family and expand the design routes for functional 2D organic nanomaterials.