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Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry

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Site-specific chemistry directed by a bifunctional nanostructured surface.

Lin Tang¹, Xin Zhang, Quanmin Guo

¹School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, United Kingdom.

Langmuir : the ACS Journal of Surfaces and Colloids

|December 25, 2009

Summary

Researchers developed a novel nanostructured surface using scanning tunneling microscopy (STM). This surface precisely controls the arrangement of C(60) molecules into ordered nanostructures by utilizing distinct binding properties of atomic step-edges.

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Last Updated: Jun 17, 2026

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Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance

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Published on: September 5, 2018

Area of Science:

Surface Science
Nanotechnology
Materials Science

Background:

Controlled molecular assembly is crucial for developing advanced nanomaterials.
Understanding molecule-surface interactions at the nanoscale is essential for precise fabrication.
Existing methods often lack the resolution to create complex, closely spaced nanostructures.

Purpose of the Study:

To engineer a bifunctional nanostructured surface for controlled molecular organization.
To investigate the differential binding properties of step-edges on Au(111) for molecular separation.
To demonstrate the formation of two-dimensional, closely spaced multiple molecular nanostructures.

Main Methods:

Fabrication of a nanostructured surface with parallel gold atom stripes on an Au(111) substrate using scanning tunneling microscopy (STM).
Each stripe features two parallel step-edges with distinct molecular binding characteristics.
Controlled adsorption and separation of C(60) molecules based on the step-edge properties.

Main Results:

Successfully created a bifunctional nanostructured surface capable of differentiating C(60) molecules.
Demonstrated the ability of the two distinct step-edges to separate C(60) molecules into different adsorbed structures.
Achieved controlled formation of two-dimensional, closely spaced multiple molecular nanostructures.

Conclusions:

The engineered nanostructured surface provides a novel platform for precise molecular manipulation.
Differential binding properties of step-edges can be effectively utilized for molecular separation and organization.
This approach enables the controlled fabrication of complex molecular nanostructures with potential applications in nanoelectronics and materials science.