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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Representative Raman measurements of AuNP and AuNP@PDOP for different PDOP deposition times (numbers indicate deposition times in min). The final concentration of methylene blue (MB) for Raman measurement is 10−5 M.