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Kurth, Dirk G.; Severin, Nikolai; Rabe, Jürgen P.

doi:10.1002/1521-3757(20021004)114:19<3833::aid-ange3833>3.0.co;2-z

Cited by 37 publications

(18 citation statements)

References 11 publications

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“…[2][3][4][5][6][7][8] This strategy was recently applied to low dimensions by assembling regular molecular architectures from organic molecules and transition-metal centers directly on solid surfaces. [9, 10] A variety of surface-supported molecular network structures has been made accessible by the general application of a surface-assisted metal-coordination method to metal centers and aromatic polycarboxylic acids on metal surfaces.…”

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confidence: 99%

Surface‐Assisted Assembly of 2D Metal–Organic Networks That Exhibit Unusual Threefold Coordination Symmetry

et al. 2007

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Coordination-based supramolecular chemistry, [1] with its characteristic control of the self-assembly process and intrinsic defect tolerance, has been proven to be a very efficient synthetic tool to fabricate metallosupramolecular networks of well-defined topology in one, two, and three dimensions. [2][3][4][5][6][7][8] This strategy was recently applied to low dimensions by assembling regular molecular architectures from organic molecules and transition-metal centers directly on solid surfaces. [9, 10] A variety of surface-supported molecular network structures has been made accessible by the general application of a surface-assisted metal-coordination method to metal centers and aromatic polycarboxylic acids on metal surfaces. [9] As valid for supramolecular structures in general, the structures of the two-dimensional metal-organic coordination networks (2D-MOCNs) formed are predetermined by the properties of the ligands (e.g., donor atoms and their spatial arrangement, steric crowding) and the electronic characteristics of the metal ions (e.g., involved orbitals, ionization energies). However, under 2D conditions, the realization of a given coordination algorithm might be altered by the presence of a metal substrate, which results in deviating coordination geometries for the same metal-ligand coupling in comparison to the 3D situation (e.g., in the bulk phase). Such deviation can be attributed to charge transfer or screening effects and the strict 2D confinement of ligands and metal centers imposed by the substrate, which substantially influences the characteristics of the metal-to-ligand bonding within the 2D coordination network. [10e]

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Surface‐Assisted Assembly of 2D Metal–Organic Networks That Exhibit Unusual Threefold Coordination Symmetry

et al. 2007

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“…[1][2][3][4][5][6] Instead of depositing prefabricated MOCNs onto surfaces, it has been recently shown that two dimensional (2D) MOCNs can be directly grown at metal surfaces in ultra high vacuum (UHV), thus creating highly regular 2D networks of metal atoms. [7][8][9][10][11][12] These grids have been pointed out to be potentially relevant for devices involving sensing, switching, and information storage. [13,14] We show here that this approach offers the additional advantage to predefine the MOCN geometry by using the substrate as template to direct the formation of novel 1D metal-organic coordination chains (MOCCs).…”

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Templated Growth of Metal–Organic Coordination Chains at Surfaces

et al. 2005

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Metal-organic coordination networks (MOCNs) formed by coordination bonding between metallic centers and organic ligands can be efficiently engineered to exhibit specific magnetic, electronic, or catalytic properties. [1][2][3][4][5][6] Instead of depositing prefabricated MOCNs onto surfaces, it has been recently shown that two dimensional (2D) MOCNs can be directly grown at metal surfaces in ultra high vacuum (UHV), thus creating highly regular 2D networks of metal atoms. [7][8][9][10][11][12] These grids have been pointed out to be potentially relevant for devices involving sensing, switching, and information storage. [13,14] We show here that this approach offers the additional advantage to predefine the MOCN geometry by using the substrate as template to direct the formation of novel 1D metal-organic coordination chains (MOCCs).The templating role of substrates is well known in the field of surface epitaxial growth. [15][16][17][18][19] Among the highly anisotropic substrates, the Cu(110) surface is one of the most common (Figure 1a and b). In order to evidence its strong 1D templating effect on organic molecules, a ligand with a triangular symmetry was selected: 1,3,5-benzenetricarboxylic acid (trimesic acid, TMA, Figure 1c). In fact, the 3-fold rotation symmetry supports the formation of hexagonal 2D and 3D architectures, [20][21][22] therefore strongly disfavoring the linear geometry. On the isotropic Cu(100) surface, TMA forms 0D carboxylate complexes and 2D networks. [9,10] The UHV deposition of TMA on Cu(110) at 300 K results in the formation of 1D chains along the 110 direction, as observed by STM. This deposition temperature is high enough to * * The authors wish to acknowledge Nian Lin, Magalí Lingenfelder, Alexander Schneider and Giacinto Scoles for fruitful discussions, HPC-EUROPA (project #506079) and INFM Progetto Calcolo Parallelo for computer resources.

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“…These interactions bear the disadvantage of low thermal and mechanical stability. Thus, there is a demand to explore the construction of more rigid supramolecular architectures [4,5] on surfaces. Metal±ligand interactions, which were introduced by Werner at the turn of the 20th century, [6] are recognized as being decisive in molecular recognition and an excellent means for the fabrication of three-dimensional supramolecular arrangements.…”

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Real‐Time Single‐Molecule Imaging of the Formation and Dynamics of Coordination Compounds

et al. 2002

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A current challenge in the field of self-assembled supramolecular nanostructures is the development of strategies for the deliberate positioning of functional molecular species on suitable substrates; this is a crucial aspect in the search for molecular devices.[1] Recent studies revealed that design principles from supramolecular chemistry can be adapted to fabricate unique supramolecular aggregates at surfaces. [2,3] However, to date, mainly hydrogen bonding and electrostatic intermolecular coupling have been successfully exploited to control the ordering of molecular building blocks at low temperatures. These interactions bear the disadvantage of low thermal and mechanical stability. Thus, there is a demand to explore the construction of more rigid supramolecular architectures [4,5] on surfaces. Metal±ligand interactions, which were introduced by Werner at the turn of the 20th century, [6] are recognized as being decisive in molecular recognition and an excellent means for the fabrication of three-dimensional supramolecular arrangements.[7±9] However, the current understanding of the evolution and dynamics of such interactions on surfaces is limited, although their energetics are in a range which lets us expect reaction rates that would permit their direct elucidation at ambient temperature by imaging methods.For the present investigation conducted on an atomically clean surface we took advantage of ligand systems based on carboxylic acids and transition metals whose characterististics are well understood.[10] Specifically, we addressed metal±li-gand bonding of trimesic acid (tma) and Cu atoms. Trimesic acid is a polyfunctional carboxylic acid with threefold symmetry comprised of a phenyl ring and three identical carboxy end groups in the same plane.[11] Its complexation was observed on Cu(100) in ultrahigh vacuum at temperatures in the range 250±300 K following deposition at room temperature. Under these conditions, the carboxylic acid groups are completely deprotonated such that three reactive COO À ligands per tma molecule exist. [12,13] The deprotonation is presumably related to the availability of Cu adatoms at the surface, which are known to exist on Cu(100) in the employed temperature range. The reason behind the presence of Cu adatoms is their continuous evaporation from atomic step COMMUNICATIONS

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Cited by 37 publications

References 11 publications

Surface‐Assisted Assembly of 2D Metal–Organic Networks That Exhibit Unusual Threefold Coordination Symmetry

Surface‐Assisted Assembly of 2D Metal–Organic Networks That Exhibit Unusual Threefold Coordination Symmetry

Templated Growth of Metal–Organic Coordination Chains at Surfaces

Real‐Time Single‐Molecule Imaging of the Formation and Dynamics of Coordination Compounds

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