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On-surface synthesis on a bulk insulator surface.

Antje Richter1, Andrea Floris2, Ralf Bechstein1

  • 1Institute of Physical Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55099 Mainz, Germany.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|February 21, 2018
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Summary
This summary is machine-generated.

On-surface synthesis on insulating calcite surfaces enables unique reactions for molecular electronics. This review details thermal and photochemical reactions, advancing surface chemistry and device applications.

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Area of Science:

  • Surface Science
  • Materials Chemistry
  • Nanotechnology

Background:

  • On-surface synthesis offers unique reaction pathways absent in solution chemistry.
  • Conducting surfaces dominate current research, but non-conducting surfaces are crucial for electronic decoupling in molecular devices.
  • The (10.4) surface of calcite, a bulk insulator, is explored for on-surface reactions.

Purpose of the Study:

  • To review the current state of on-surface reactions on the calcite (10.4) surface.
  • To highlight the potential of insulating surfaces for novel molecular synthesis.
  • To discuss the importance of understanding reaction mechanisms on these surfaces.

Main Methods:

  • Review of existing literature on on-surface reactions on calcite.
  • Experimental verification using dynamic atomic force microscopy (AFM).
  • Theoretical insights using density-functional theory (DFT) calculations.

Main Results:

  • Demonstrated thermally induced C-C coupling of halogen-substituted aryls.
  • Confirmed photochemically induced [2+2] cycloaddition reactions.
  • Evidence for terminal alkyne coupling and diacetylene polymerization on calcite.

Conclusions:

  • On-surface synthesis on bulk insulators like calcite is feasible and offers unique reaction possibilities.
  • Dynamic AFM and DFT calculations are essential for characterizing products and elucidating reaction mechanisms.
  • This research paves the way for designing molecular electronic devices with improved performance through surface-confined reactions.