Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 132, Issue 31, Pages 10756-10761Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja1018578
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- Hong Kong RGC [602008]
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Surface-supported supramolecular self-assembly has been used to generate multicomponent two-dimensional metal organic coordination networks on a Au(111) surface. The networks consist of linker ligands of 4',4''''-(1,4-phenylene)bis(2,2':6',2 ''-terpyridine) and nodal ligands of 5,10,15,20-tetra(4-pyridyl)porphyrin that are connected by pyridine Fe terpyridine motifs. Scanning tunneling microscopy revealed the coexistence of two polymorphic types of network structures (rhombus and Kagome). Through control of the dosage of the constituent ligands, homogeneous structural phases were obtained selectively. In particular, the rhombus structure could be converted into the more complex and more open Kagome structure by inclusion of guest molecules. Finally, coordination networks providing structural and chemical homogeneity were realized by judiciously choosing the dosages of the constituent ligands and the chemical substitution of the porphyrin ligands.
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