Premium
Self‐Assembly and Local Manipulation of Au‐Pyridyl Coordination Networks on Metal Surfaces
Author(s) -
Song Yang,
Wang Yuxu,
Jin Qiao,
Zhou Kun,
Shi Ziliang,
Liu PeiNian,
Ma Yuqiang
Publication year - 2017
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201700439
Subject(s) - scanning tunneling microscope , crystallography , homogeneous , nanotechnology , network structure , coordination complex , materials science , molecule , coordination number , ligand (biochemistry) , annealing (glass) , metal , chemical physics , chemistry , physics , computer science , ion , biochemistry , receptor , organic chemistry , machine learning , metallurgy , composite material , thermodynamics
Abstract Using scanning tunnelling microscopy (STM), we demonstrate that Au‐pyridyl coordination can be used to assemble two‐dimensional coordination network structures on metal surfaces. The polymorphism of the coordination network structures can be manipulated at both the micro‐ and nanoscale. Using the same organic ligand, we assembled two distinct polymorphic network structures, which were assisted by threefold Au‐pyridyl coordination on Ag(111) with predeposited Au atoms (α‐network), and by twofold Au‐pyridyl coordination on Au(111) (β‐network), respectively. Specifically on the Au(111) surface, single‐oriented β‐network domains as large as ≈400 nm were selected by thermal annealing. We ascribe this global control strategy to distinct Au bonding modes tuned by molecule–substrate interactions. Using an STM tip, we succeeded in creating α‐network domains (≈10 nm) locally within the homogeneous β‐network domain areas on Au(111) in a controlled manner.