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Issue 11, 2017
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Au nanorods-sensitized 1DPC for visible detection of NIR light

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Abstract

Visible detection of electromagnetic waves is important. Herein, we propose a method to trace invisible near infrared (NIR) light by combining thermo-sensitive one-dimensional photonic crystals (1DPCs) and Au nanorods (NRs). Au NRs first absorb the NIR light and convert it into heat energy, then the temperature increase and the thermo-sensitive 1DPC produces a response through conformation transfer of the PNIPAm layer leading to the disappearance of its structural color, which is a quite obvious signal. We also realize the differentiation of NIR light belonging to a different wavelength range by building hybrid 1DPCs with Au NRs of different absorbance. The 1DPC/Au hybrid system is easy to prepare in a large area with low cost, the signal read-out can be observed by the naked eye and the polymer matrix also makes it a promising flexible device. We believe that such a device will be portable and has the potential to be used in various applications in daily life.

Graphical abstract: Au nanorods-sensitized 1DPC for visible detection of NIR light

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Supplementary files

Article information


Submitted
14 Dec 2016
Accepted
11 Feb 2017
First published
13 Feb 2017

J. Mater. Chem. C, 2017,5, 2942-2950
Article type
Paper

Au nanorods-sensitized 1DPC for visible detection of NIR light

H. Shen, Y. Wu, W. Wang, H. Su, W. Liu, J. Zhang, K. Zhang and B. Yang, J. Mater. Chem. C, 2017, 5, 2942
DOI: 10.1039/C6TC05389K

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