Related Experiment Video
Updated: Aug 7, 2026
10:27
Antifouling Self-assembled Monolayers on Microelectrodes for Patterning Biomolecules
Published on: August 25, 2009
Directed assembly and separation of self-assembled monolayers via electrochemical processing
Thomas J Mullen1, Arrelaine A Dameron, Paul S Weiss
1Departments of Chemistry and Physics, The Pennsylvania State University, 104 Davey Lab, University Park, PA 16802-6300, USA.
The Journal of Physical Chemistry. B
|July 21, 2006
Summary
Researchers created patterned self-assembled monolayers using solution displacement. This technique allows control over molecular structure and properties for advanced materials applications.
Area of Science:
- Surface Science
- Nanotechnology
- Electrochemistry
Background:
- Self-assembled monolayers (SAMs) are crucial for surface patterning.
- Controlling domain boundaries in SAMs is challenging but important for tailored surface properties.
Purpose of the Study:
- To develop a method for fabricating separated self-assembled monolayers with distinct domains.
- To investigate the control over structure and properties of these separated SAMs.
Main Methods:
- Fabrication of separated domains using solution displacement on Au{111}.
- Selective desorption of 1-adamantanethiolate followed by exposure to 1-octanethiol.
- Characterization using scanning tunneling microscopy (STM) and cyclic voltammetry (CV).
Main Results:
- Successfully created artificially separated SAMs of 1-dodecanethiolate and 1-octanethiolate.
- STM and CV confirmed distinct domains with different molecular orders and electrochemical behaviors.
- Demonstrated control over SAM structure and properties by manipulating intermolecular interactions.
Conclusions:
- Solution displacement and electrochemical processing enable precise control over separated SAMs.
- This method offers a pathway for creating patterned surfaces with tunable properties.
- The technique is extendable to other self-assembly patterning methods like microdisplacement printing.
