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. 2018 Mar 1;8:3880. doi: 10.1038/s41598-018-22269-x

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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(a) SERRS measurements of the aligned FF-PNT/Ag NP template with TMPyP following UV irradiation. (b) SERRS measurements recorded following 45 minutes of UV irradiation, showing the relaxation of the signal. (c) Plots of intensity vs. time following 5 minute irradiation steps (blue), after turning the UV lamp off after 45 minutes of total UV irradiation (orange), and in the absence of UV irradiation (red). (d) A comparison of normalized SERRS spectra with (red) and without (purple) UV irradiation.