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Title: Dendrimer‐Based Gold Nanostructures for SERS Detection of Pesticides in Water
Author: Fernandes, Tiago
Fateixa, Sara
Nogueira, Helena I. S.
Daniel da Silva, A. L.
Trindade, Tito
Issue Date: Apr-2020
Publisher: Wiley-Blackwell
Abstract: Dendrimers are polymers with well-defined architec- tures and tunable chemistry, which make them useful in a num- ber of applications. Herein, the chemistry of poly(amido)amine (PAMAM) dendrimers with different functional groups was ex- plored to produce a variety of plasmonic systems based on Au colloidal nanoparticles. The resulting systems present long-term colloidal stability and were investigated as sensitive platforms for surface-enhanced Raman scattering (SERS). The application of these SERS platforms for the detection of water trace pollu- tants, was explored through the analysis of selected pesticides. Noteworthy, dendrimer coated Au nanoparticles with tunable properties such as size, shape and surface chemistry, were ob- tained by varying the dendrimer chemical properties. The sur- face chemistry of PAMAM capped Au colloids was explored in order to produce target selective SERS substrates for pesticide detection, that allowed to reach detection limits down to 10 nM.
Peer review: yes
DOI: 10.1002/ejic.201901134
ISSN: 1434-1948
Appears in Collections:CICECO - Artigos
DQ - Artigos

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