Self-assembly of a sulfur-bridged annulene: Substrate effect and donor-acceptor complex
We have studied the self-assembly structure of meso-diphenyltetrathia 22-annulene 2,1,2,1 (DPTTA) on highly oriented pyrolytic graphite (HOPG),Au(111),and single-layer graphene (SLG) modified Au(111) substrates.High resolution scanning tunneling microscopy (STM) reveals that DPTTA molecules pack into one dimensionally ordered row structure on graphene and HOPG surfaces,while assemble into two dimensional close-packed structure on Au(111) surface.We ascribe this difference to the effect of the substrate.The addition of C60 molecules on these DPTTA modified substrates further reveals that the structural difference in DPTTA adlayer can affect its ability to form donor-acceptor (D-A) hierarchical structure with C60 molecules.The results provide an example of substrate effect in self-assemblies of functional molecules,which is significant for the design of molecular based devices.
Scanning tunneling microscopy Substrate effect Sulfur-bridged annulene Self-assembly
Zhen-Feng Cai Jie-Yu Yue Jing Li Dong Wang Wei Xu Li-Jun Wan
CAS Key Laboratory of Molecular Nanostructure and Nanotechnology,Beijing National Laboratory for Mol CAS Key Laboratory of Molecular Nanostructure and Nanotechnology,Beijing National Laboratory for Mol CAS Key Laboratory of Organic Solids,Institute of Chemistry,Chinese Academy of Sciences(CAS),Beijing
国际会议
南京
英文
20-23
2016-12-23（万方平台首次上网日期，不代表论文的发表时间）