Issue 2, 2015

Morphological control and plasmonic tuning of nanoporous gold disks by surface modifications

Abstract

We report a surface modification protocol to control nanoporous gold (NPG) disk morphology and tune its plasmonic resonance. Enlarged pore size up to ∼20 nm within 60 s dealloying time has been achieved by adsorbing halides onto alloy surfaces in-between two dealloying steps. In addition, plasmonic resonance has been significantly red-shifted by up to ∼258 nm by the surface modification. Furthermore, with the enlarged pore size, small gold nanoparticles have been effectively loaded into the pores to enhance the performance of surface-enhanced Raman scattering (SERS) due to hot spot formation between the original nanoporous network and loaded nanoparticles.

Graphical abstract: Morphological control and plasmonic tuning of nanoporous gold disks by surface modifications

Supplementary files

Article information

Article type
Communication
Submitted
15 Oct 2014
Accepted
07 Nov 2014
First published
14 Nov 2014

J. Mater. Chem. C, 2015,3, 247-252

Author version available

Morphological control and plasmonic tuning of nanoporous gold disks by surface modifications

J. Zeng, F. Zhao, M. Li, C. Li, T. R. Lee and W. Shih, J. Mater. Chem. C, 2015, 3, 247 DOI: 10.1039/C4TC02328E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements