Layer-by-Layer Assembly of Polystyrene/Ag for a Highly Reproducible SERS Substrate and Its Use for the Detection of Food Contaminants

Polystyrene (PS) spheres were prepared through an emulsifier-free emulsion polymerization method, in which the reaction time, ionic strength, concentrations of copolymer were studied in detail. The resulting PS microspheres and Ag nanoparticles were used to construct a surface enhanced Raman scatter...

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Autores principales: Zhang, Sihan, Xu, Zhihua, Guo, Jiaqi, Wang, Haiying, Ma, Yibo, Kong, Xianming, Fan, Hongtao, Yu, Qian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8512144/
https://www.ncbi.nlm.nih.gov/pubmed/34641085
http://dx.doi.org/10.3390/polym13193270
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author Zhang, Sihan
Xu, Zhihua
Guo, Jiaqi
Wang, Haiying
Ma, Yibo
Kong, Xianming
Fan, Hongtao
Yu, Qian
author_facet Zhang, Sihan
Xu, Zhihua
Guo, Jiaqi
Wang, Haiying
Ma, Yibo
Kong, Xianming
Fan, Hongtao
Yu, Qian
author_sort Zhang, Sihan
collection PubMed
description Polystyrene (PS) spheres were prepared through an emulsifier-free emulsion polymerization method, in which the reaction time, ionic strength, concentrations of copolymer were studied in detail. The resulting PS microspheres and Ag nanoparticles were used to construct a surface enhanced Raman scattering (SERS) substrate by a layer-by-layer assembly method. A relatively uniform distribution of PS/Ag in the films was obtained, and the multilayer substrate presented excellent SERS reproducibility and a tunable enhancement effect. The SERS substrate was used for detecting harmful pesticides (malachite green and dimetridazole) in food samples, with a limit of detection as low as 3.5 ppb. The obtained plasmonic composite has a promising future in the field of SERS sensing.
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spelling pubmed-85121442021-10-14 Layer-by-Layer Assembly of Polystyrene/Ag for a Highly Reproducible SERS Substrate and Its Use for the Detection of Food Contaminants Zhang, Sihan Xu, Zhihua Guo, Jiaqi Wang, Haiying Ma, Yibo Kong, Xianming Fan, Hongtao Yu, Qian Polymers (Basel) Article Polystyrene (PS) spheres were prepared through an emulsifier-free emulsion polymerization method, in which the reaction time, ionic strength, concentrations of copolymer were studied in detail. The resulting PS microspheres and Ag nanoparticles were used to construct a surface enhanced Raman scattering (SERS) substrate by a layer-by-layer assembly method. A relatively uniform distribution of PS/Ag in the films was obtained, and the multilayer substrate presented excellent SERS reproducibility and a tunable enhancement effect. The SERS substrate was used for detecting harmful pesticides (malachite green and dimetridazole) in food samples, with a limit of detection as low as 3.5 ppb. The obtained plasmonic composite has a promising future in the field of SERS sensing. MDPI 2021-09-25 /pmc/articles/PMC8512144/ /pubmed/34641085 http://dx.doi.org/10.3390/polym13193270 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Sihan
Xu, Zhihua
Guo, Jiaqi
Wang, Haiying
Ma, Yibo
Kong, Xianming
Fan, Hongtao
Yu, Qian
Layer-by-Layer Assembly of Polystyrene/Ag for a Highly Reproducible SERS Substrate and Its Use for the Detection of Food Contaminants
title Layer-by-Layer Assembly of Polystyrene/Ag for a Highly Reproducible SERS Substrate and Its Use for the Detection of Food Contaminants
title_full Layer-by-Layer Assembly of Polystyrene/Ag for a Highly Reproducible SERS Substrate and Its Use for the Detection of Food Contaminants
title_fullStr Layer-by-Layer Assembly of Polystyrene/Ag for a Highly Reproducible SERS Substrate and Its Use for the Detection of Food Contaminants
title_full_unstemmed Layer-by-Layer Assembly of Polystyrene/Ag for a Highly Reproducible SERS Substrate and Its Use for the Detection of Food Contaminants
title_short Layer-by-Layer Assembly of Polystyrene/Ag for a Highly Reproducible SERS Substrate and Its Use for the Detection of Food Contaminants
title_sort layer-by-layer assembly of polystyrene/ag for a highly reproducible sers substrate and its use for the detection of food contaminants
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8512144/
https://www.ncbi.nlm.nih.gov/pubmed/34641085
http://dx.doi.org/10.3390/polym13193270
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