2011
DOI: 10.1021/ja2056193
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Structural Transformation of Two-Dimensional Metal–Organic Coordination Networks Driven by Intrinsic In-Plane Compression

Abstract: The coordination assembly of 1,3,5-trispyridylbenzene with Cu on a Au(111) surface has been investigated by scanning tunneling microscopy under ultrahigh vacuum conditions. An open two-dimensional (2D) metal-organic network of honeycomb structure is formed as the 2D network covers partial surface. Upon the 2D network coverage of the entire surface, further increment of molecular density on the surface results in a multistep nonreversible structural transformation in the self-assembly. The new phases consist of… Show more

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Cited by 105 publications
(147 citation statements)
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References 74 publications
(28 reference statements)
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“…Copper and gold are known to be miscible already from room temperature [3], can form binary solid solutions across the full compositional range, and can also form ordered alloys in the bulk phase, most notably Cu 3 Au, CuAu and CuAu 3 . For the coppergold system different top layer structures have been proposed: segregation [7,30,35,36], complete encapsulation, whereby a single layer of copper is covered by a single layer of gold [32,[36][37][38] and intermixing [28,32,[36][37][38][39][40] have been considered. Often varying electronic contrast observed via STM when imaging an island has been considered as an indication that the top layer is of mixed (random) composition, as in surface solid solution [12,32,[41][42][43].…”
Section: Resultsmentioning
confidence: 99%
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“…Copper and gold are known to be miscible already from room temperature [3], can form binary solid solutions across the full compositional range, and can also form ordered alloys in the bulk phase, most notably Cu 3 Au, CuAu and CuAu 3 . For the coppergold system different top layer structures have been proposed: segregation [7,30,35,36], complete encapsulation, whereby a single layer of copper is covered by a single layer of gold [32,[36][37][38] and intermixing [28,32,[36][37][38][39][40] have been considered. Often varying electronic contrast observed via STM when imaging an island has been considered as an indication that the top layer is of mixed (random) composition, as in surface solid solution [12,32,[41][42][43].…”
Section: Resultsmentioning
confidence: 99%
“…These networks show great structural flexibility as several phases of different geometry and/or coordination appeared upon varying the coverage in organic linker (and hence the stoichiometric ratio with copper, and the surface density) [7].…”
Section: B Reactivitymentioning
confidence: 99%
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“…As shown in Fig. 1(a), molecules of 1,3,5-tris(pyridyl)benzene (TPyB) self-assemble into a honeycomb network structure, wherein the adjacent TPyB molecules are linked via pyridyl-Cu-pyridyl coordination bonds involving the molecules' N atoms [22,23]. In the interior of the network domains each molecule is laterally coupled through three coordination bonds while at the edge of the network domains each molecule is coupled through two coordination bonds.…”
mentioning
confidence: 99%
“…Self-assembled metal-organic networks consisting of molecular linkers and metal species provide longrange order [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] and a programmable network architecture based on the interplay of the functionalized parts of the organic molecule and the metal species. With the choice of the symmetry and size of the organic linker, the geometry of the metal-organic network can be tuned [5,6].…”
Section: Introductionmentioning
confidence: 99%