文献类型：期刊文献

英文题名：Thermodynamics and Selectivity of Two-Dimensional Metallo-supramolecular Self-Assembly Resolved at Molecular Scale

作者：Shi, Ziliang[3];Liu, Jun[1,2];Lin, Tao[3];Xia, Fei[1,2];Liu, Pei Nian[1,2];Lin, Nian[3]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China

年份：2011

卷号：133

期号：16

起止页码：6150

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：20111713932857);WOS:【SCI-EXPANDED(收录号:WOS:000292715500014)】；

基金：This work was financially supported by the Hong Kong RGC (Grants 602008 and 602409), the NSFC (Project 20902020), and the Shanghai Pujiang Talent Program (Project 09PJI403500).

语种：英文

外文关键词：Electrons - Thermodynamics - Binding energy - Self assembly - Supramolecular chemistry

摘要：We investigated the thermodynamic processes of two-dimensional (2D) metallo-supramolecular self-assembly at molecular resolution using scanning tunneling microscopy and variable-temperature low-energy electron diffraction. On a Au-(111) substrate, tripyridyl ligands coordinated with Cu in a twofold Cu-pyridyl binding mode or with Fe in a threefold Fe-pyridyl binding mode, forming a 2D open network structure in each case. The network structures exhibited remarkable thermal stability (600 K for the Cu-coordinated network and 680 K for the Fe-coordinated network). The Fe-pyridyl binding was selected thermodynamically as well as kinetically in self-assembly involving both modes. The selectivity can be effectively suppressed in a specifically designed self-assembly route.