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Issue 18, 2009
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Tuning optical properties of gold nanorods in polymer films through thermal reshaping

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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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Publication details

The article was received on 27 Jan 2009, accepted on 03 Feb 2009 and first published on 05 Mar 2009


Article type: Paper
DOI: 10.1039/B901782H
Citation: 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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