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Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
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Published on: May 8, 2015

Random two-dimensional string networks based on divergent coordination assembly.

Matthias Marschall1, Joachim Reichert, Alexander Weber-Bargioni

  • 1Physik Department E20, TU München, James-Franck Strasse, D-85748 Garching, Germany.

Nature Chemistry
|December 3, 2010
PubMed
Summary
This summary is machine-generated.

Researchers created robust, disordered coordination networks using cobalt and a nonlinear linker. This advance offers new insights into the structure of amorphous materials at the molecular level.

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Area of Science:

  • Materials Science
  • Supramolecular Chemistry
  • Surface Science

Background:

  • Determining molecular-level structures in amorphous materials is challenging due to the absence of long-range order.
  • Previous 2D supramolecular networks, while insightful, were limited by stability and homomolecular systems.

Purpose of the Study:

  • To explore robust, disordered coordination networks incorporating transition-metal centers.
  • To investigate the assembly of nonlinear, prochiral linkers with metal atoms on surfaces.

Main Methods:

  • Co-deposition of cobalt atoms and a ditopic linker on metal surfaces.
  • In situ scanning tunneling microscopy (STM) for real-time structural analysis.

Main Results:

  • Formation of coordination nodes with similar energies, driving divergent assembly.
  • Observation of string formation and bifurcation motifs.
  • Successful reticulation of the entire surface with a disordered network.

Conclusions:

  • Disordered coordination networks offer a stable platform for studying amorphous material structures.
  • The assembly process is driven by specific coordination node formation and linker properties.
  • This work provides a new route to creating complex, disordered supramolecular architectures.