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Area of Science:

  • Surface science
  • Molecular engineering
  • Materials chemistry

Background:

  • Controlled assembly of molecules on surfaces is key for advanced functions.
  • Achieving defined intermolecular spacing and controlled interactions is a challenge.
  • Molecular platforms offer a route to engineer functional adlayers.

Purpose of the Study:

  • To demonstrate the preparation of mixed adlayers with multiple chemical functions.
  • To achieve controlled intermolecular spacing and orientation using molecular platforms.
  • To explore novel advanced system properties through controlled molecular assembly.

Main Methods:

  • Utilizing molecular platforms with vertical functional units.
  • Preparing mixed adlayers with identical triazatriangulenium-based units.
  • Incorporating components with stable photoswitches, bare platforms, pyridine units, and metastable switches.

Main Results:

  • Successfully prepared highly hexagonally ordered mixed adlayers.
  • Demonstrated easy variation of adlayer composition.
  • Observed a stochastic arrangement of the different molecular components within the ordered layers.

Conclusions:

  • Mixed adlayers with multiple chemical functions can be prepared using molecular platforms.
  • The method allows for controlled intermolecular spacing and orientation.
  • These engineered surfaces pave the way for novel molecular machine functions.