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Updated: Mar 31, 2026

A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates

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Published on: May 9, 2014

Time-Controlled Colloidal Superstructures: Long-Range Plasmon Resonance Coupling in Particle Monolayers.

Kirsten Volk¹, Joseph P S Fitzgerald¹, Markus Retsch¹

¹Physical Chemistry I, University of Bayreuth, Universitaetsstr. 30, 95440, Bayreuth, Germany.

Advanced Materials (Deerfield Beach, Fla.)

|October 15, 2015

Summary

Researchers demonstrated particle interactions in ordered colloidal monolayers, controlling interparticle spacing with time. This one-step fabrication method creates large, hexagonal monolayers without further processing, enabling tunable plasmon coupling.

Keywords:

colloidal self-assembly core-shell particles interface assembly nanooptics plasmon resonance coupling

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Published on: September 27, 2011

Area of Science:

Colloidal science
Nanophotonics
Materials science

Background:

Controlling interparticle spacing in colloidal monolayers is crucial for tuning optical properties.
Achieving highly ordered, macroscopic monolayers with precise spacing has been a significant challenge.

Purpose of the Study:

To demonstrate particle interactions, including plasmon coupling and noncoupling, in colloidal monolayers.
To develop a scalable fabrication method for ordered colloidal monolayers with controlled interparticle distances.

Main Methods:

Fabrication of macroscopic, hexagonal colloidal monolayers in a single step.
Utilizing time as a control parameter to precisely dictate interparticle spacing.
Characterization of particle interactions based on interparticle distances.

Main Results:

Demonstrated tunable particle interactions, ranging from strong dipolar plasmon coupling to noncoupling.
Achieved exceptionally high degrees of order in large-area hexagonal monolayers.
Showcased that interparticle spacing is controlled solely by fabrication time, eliminating the need for post-processing.

Conclusions:

The developed one-step method allows for the controlled fabrication of ordered colloidal monolayers with tunable interparticle distances.
This technique provides a scalable platform for investigating and utilizing particle interactions, particularly plasmon coupling, in nanophotonics and materials science.