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Molecularly-tunable nanoelectrode arrays created by harnessing intermolecular interactions
Han-Wen Cheng1,2, Shan Wang2, Marc D Porter3
1School of Chemical and Environmental Engineering, Shanghai Institute of Technology Shanghai 201418 China hwcheng@sit.edu.cn.
Chemical Science
|May 17, 2021
Summary
Researchers controlled intermolecular interactions in organothiol monolayers to create nanoelectrode arrays. This molecular-level perforation strategy enables tunable interfacial properties for applications in sensing and energy storage.
Area of Science:
- Surface Science
- Electrochemistry
- Nanotechnology
Background:
- Intermolecular interactions dictate molecular assembly binding strength on surfaces.
- Harnessing these interactions allows for molecularly-tunable interfacial structures and properties.
Purpose of the Study:
- To tune intermolecular interactions in organothiol monolayers for creating nanoelectrode arrays.
- To achieve effective mass transport through molecular-level perforation.
Main Methods:
- Thermodynamic analysis of fractional coverage.
- Surface infrared reflection absorption spectroscopy.
- X-ray photoelectron spectroscopy.
- Electrochemical perforation.
Main Results:
- Full control over homo- and hetero-intermolecular interactions demonstrated.
- Controllable electrochemical perforation created nanochannels.
- Nanoelectrode arrays exhibited molecularly tunable redox reactions with radial diffusion.
Conclusions:
- Understanding intermolecular interactions enables precise control over monolayer assembly.
- This strategy facilitates the creation of nanoelectrode arrays with tunable mass transport.
- Findings support applications in ion-gating, electrochemical sensing, and energy storage devices.
