title: Substrate Orientation Effect in the On-Surface Synthesis of Tetrathiafulvalene-Integrated Single-Layer Covalent Organic Frameworks.
abstract: The on-surface reactions of tetrathiafulvalene equipped with four benzaldehyde groups (4ATTF) and ditopic diamine molecules are investigated. 4ATTF tends to form large-scale-ordered rhombus structures when reacted with p-phenylenediamine (PPDA). A longer ditopic diamine molecule, 1,1'-biphenyl-4,4'-diamine dihydrochloride (BPDA), causes the domain size of the regular rhombus structure to decrease and triangular and irregular rhombus structures to appear upon reaction with 4ATTF. However, in the rhombus structures formed by different-length ditopic diamine molecules, the single-layer covalent organic frameworks on the graphite surface preferentially orient in alignment with the underlying HOPG substrate lattice.
authors.affiliation: Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, PR China.|University of CAS , Beijing, PR China.
authors.forename: Wei-long
authors.initials: WL
authors.lastname: Dong
authors.affiliation: Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, PR China.|University of CAS , Beijing, PR China.
authors.forename: Lin
authors.initials: L
authors.lastname: Wang
authors.affiliation: Key Laboratory of Biomedical Polymers (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, PR China.
authors.forename: Hui-min
authors.initials: HM
authors.lastname: Ding
authors.affiliation: Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, PR China.
authors.forename: Lu
authors.initials: L
authors.lastname: Zhao
authors.affiliation: Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, PR China.
authors.forename: Dong
authors.initials: D
authors.lastname: Wang
authors.affiliation: Key Laboratory of Biomedical Polymers (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, PR China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Wang
authors.affiliation: Institute of Chemistry, Chinese Academy of Sciences (CAS) , Beijing 100190, PR China.
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Wan
mesh_terms: D006571:Heterocyclic Compounds / Q000138:chemical synthesis*; D016252:Microscopy, Scanning Tunneling; D009930:Organic Chemicals / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D006571:Heterocyclic Compounds; D009930:Organic Chemicals; C063887:tetrathiafulvalene