Journal
CHEMICAL SCIENCE
Volume 8, Issue 3, Pages 2169-2174Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6sc03590f
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Funding
- National Natural Science Foundation of China [21433011, 91527303, 21233010, 21373236, 21127901]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB12020100]
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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.
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