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Structural adaptations of electrosprayed aromatic oligoamide foldamers on Ag(111)
Dennis Meier1, Benedikt Schoof1, Jinhua Wang2
1Physics Department E20, Technical University Munich, D-85748 Garching, Germany. a.c.papageorgiou@tum.de.
Chemical Communications (Cambridge, England)
|July 19, 2022
Summary
Aromatic foldamers form defect-free 2D crystalline monolayers on silver surfaces. This is achieved using electrospray controlled ion beam deposition, enabling molecular machinery applications.
Area of Science:
- Supramolecular Chemistry
- Surface Science
- Materials Science
Background:
- Aromatic foldamers show potential for molecular recognition and machinery.
- Defect-free 2D crystalline monolayers are crucial for foldamer applications.
- Controlled deposition techniques are needed to create ordered monolayers.
Purpose of the Study:
- To prepare defect-free 2D crystalline monolayers of aromatic foldamers.
- To investigate the self-assembly behavior of aromatic foldamers on surfaces.
- To enable advanced applications in molecular machinery and recognition.
Main Methods:
- Deposition of aromatic foldamers onto Ag(111) surfaces using electrospray controlled ion beam deposition (ES-CIBD) in ultra-high vacuum (UHV).
- Real-space single-molecule imaging and analysis using scanning tunnelling microscopy (STM).
Main Results:
- Submonolayers of aromatic foldamers were successfully prepared on Ag(111).
- The unfolded state of the foldamers was unambiguously identified on the surface.
- Foldamers self-assembled into regular, ordered structures.
Conclusions:
- ES-CIBD is an effective method for creating ordered aromatic foldamer monolayers.
- The self-assembly of foldamers on surfaces can yield well-defined structures.
- These findings pave the way for utilizing foldamers in advanced molecular devices.
