title: Building chessboard-like supramolecular structures on Au(111) surfaces.
abstract: We investigate an anthracene derivative, 3(5)-(9-anthryl) pyrazole (ANP), self-assembled on the Au(111) surface by means of scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. A chessboard-like network structure composed of ANP molecules is found, covering the whole Au(111) substrate. Our STM results and DFT calculations reveal that the formation of chessboard-like networks originates from a basic unit cell, a tetramer structure, which is formed by four ANP molecules connected through C-H…N hydrogen bonds. The hydrogen bonds inside each tetramer and the molecule-substrate interaction are fundamentally important in providing a driving force for formation of the supramolecular networks.
authors: Department of Physics, Beijing Normal University, Beijing 100875, People's Republic of China.
authors: Ruifen
authors: R
authors: Dou
authors: Yu
authors: Y
authors: Yang
authors: Ping
authors: P
authors: Zhang
authors: Dingyong
authors: D
authors: Zhong
authors: Harald
authors: H
authors: Fuchs
authors: Yue
authors: Y
authors: Wang
authors: Lifeng
authors: L
authors: Chi