Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 53, Issue 36, Pages 9564-9568Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201400273
Keywords
density functional calculations; graphene; Schiff base; STM; surface covalent organic framework
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Funding
- HIT
- National Science Foundation of China [21373070, 21173061, 21303030]
- State Key Lab of Urban Water Resource and Environment (HIT) [2014TS01]
- State Key Laboratory of Supramolecular Structure and Materials (JLU) [SKLSSM201404]
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The integration of 2D covalent organic frameworks (COFs) with atomic thickness with graphene will lead to intriguing two-dimensional materials. A surface-confined covalently bonded Schiff base network was prepared on single-layer graphene grown on copper foil and the dynamic reaction process was investigated with scanning tunneling microscopy. DFT simulations provide an understanding of the electronic structures and the interactions between the surface COF and graphene. Strong coupling between the surface COF and graphene was confirmed by the dispersive bands of the surface COF after interaction with graphene, and also by the experimental observation of tunneling condition dependent contrast of the surface COF.
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