Issue 18, 2009
From the journal:

Journal of Materials Chemistry

Tuning optical properties of gold nanorods in polymer films through thermal reshaping†

Yu Liu,a   Eric N. Millsa  and  Russell J. Composto*a  

* Corresponding authors

a Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, USA
E-mail: composto@seas.upenn.edu
Fax: +1 (1)215 573 2128
Tel: +1 (1)215 898 4451

Abstract

The thermal reshaping of gold nanorods (NRs) in a poly(methyl methacrylate) (PMMA) nanocomposite film is investigated by UV-vis and TEM. To ensure dispersion, the NRs are modified with PEG brushes, and then dispersed in PMMA. Thermal annealing of the PMMA–NR film results in a blue shift of the longitudinal plasmon resonance, caused by a decrease in the length of the NR. The rate of the blue shift increases as temperature increases from 100 °C to 200 °C, and the longitudinal absorption peak approaches a constant value that scales linearly with temperature. We demonstrate a potential application by fabricating a device with a gradient in optical properties.

Graphical abstract: Tuning optical properties of gold nanorods in polymer films through thermal reshaping

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Article information

DOI
https://doi.org/10.1039/B901782H
Article type
Paper
Submitted
27 Jan 2009
Accepted
03 Feb 2009
First published
05 Mar 2009

J. Mater. Chem., 2009,19, 2704-2709

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Tuning optical properties of gold nanorods in polymer films through thermal reshaping

Y. Liu, E. N. Mills and R. J. Composto, J. Mater. Chem., 2009, 19, 2704 DOI: 10.1039/B901782H

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