Issue 43, 2015

Tunable plasmonic surfaces via colloid assembly


Self-assembly of plasmonic colloids is a key challenge on the road to the cost-efficient fabrication of optically active surfaces. Here, we show that core–shell particles with plasmonic cores and hydrogel shells are ideal building blocks for coatings with engineered optical properties. The plasmonic properties of the colloids are tuned by selective overgrowth of the gold cores with either gold or silver shells of variable thicknesses. This library of particles is used for monolayer preparation by self-assembly at the air/water interface and subsequent transfer onto solid supports. These monolayers of hexagonally packed particles have very similar particle densities and center-to-center distances, independent of the metal core composition and size. Consequently, our simple and robust bottom-up approach allows us to precisely tailor the optical properties of solid surfaces.

Graphical abstract: Tunable plasmonic surfaces via colloid assembly

Supplementary files

Article information

Article type
13 Jul 2015
05 Oct 2015
First published
06 Oct 2015
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2015,3, 11449-11457

Tunable plasmonic surfaces via colloid assembly

T. Honold, K. Volk, A. Rauh, J. P. S. Fitzgerald and M. Karg, J. Mater. Chem. C, 2015, 3, 11449 DOI: 10.1039/C5TC02115D

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity