Dendrimer stabilized nanoalloys for inkjet printing of surface-enhanced Raman scattering substrates

Fernandes, Tiago; Martins, Natércia C. T.; Fateixa, Sara; Nogueira, Helena I. S.; Daniel‐da‐Silva, Ana L.; Trindade, Tito

doi:10.1016/j.jcis.2021.12.167

Cited by 13 publications

(8 citation statements)

References 69 publications

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“…This technique has several advantages such as simplicity, low-cost and suitability for large-scale production of substrates. Furthermore, it offers the possibility to adjust the SERS sensor to target applications by employing ink formulations of distinct chemical composition ( Yorov et al, 2016 ; Martins et al, 2021 ; Fernandes et al, 2022 ). Another important feature of inkjet printing is that allows the fabrication of SERS sensors on diverse materials with different substrate shapes (e.g., cellulose paper, glass surfaces or silicon wafers) ( Hoppmann et al, 2013 ; Yang et al, 2015 ; Miccichè et al, 2018 ).…”

Section: Nanomaterials For Water Cleaning Nanotechnologiesmentioning

confidence: 99%

“…Furthermore, paper-based SERS substrates can be employed in point-of-use applications in conjunction with handheld Raman instruments and smartphones ( Sun et al, 2019 ; Zeng et al, 2019 ). Thus, the inkjet printing of colloidal metal NPs on paper is gaining considerable attention as a widely accessible method for SERS substrates fabrication ( Dai et al, 2014 ; Godoy et al, 2020 ; Martins et al, 2021 ; Fernandes et al, 2022 ).…”

Section: Nanomaterials For Water Cleaning Nanotechnologiesmentioning

confidence: 99%

“…More recently, we have reported the use of dendrimer-stabilized Au:Ag nanoalloys of variable molar ratios for the inkjet printing of SERS substrates on office paper ( Fernandes et al, 2022 ). Firstly, Au:Ag alloys were prepared in the presence of poly (amidoamine) dendrimer (PAMAM), resulting in nanoassemblies with plasmonic properties that depend on the chemical composition of the final materials ( Fernandes et al, 2021 ; Fernandes et al, 2022 ). The dendrimer acts as a “molecular glue” for the clustering of Au and Ag nanocrystals, and also as a reducing and colloidal stabilizer.…”

Section: Nanomaterials For Water Cleaning Nanotechnologiesmentioning

confidence: 99%

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Colloidal nanomaterials for water quality improvement and monitoring

et al. 2022

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Water is the most important resource for all kind forms of live. It is a vital resource distributed unequally across different regions of the globe, with populations already living with water scarcity, a situation that is spreading due to the impact of climate change. The reversal of this tendency and the mitigation of its disastrous consequences is a global challenge posed to Humanity, with the scientific community assuming a major obligation for providing solutions based on scientific knowledge. This article reviews literature concerning the development of nanomaterials for water purification technologies, including collaborative scientific research carried out in our laboratory (nanoLAB@UA) framed by the general activities carried out at the CICECO-Aveiro Institute of Materials. Our research carried out in this specific context has been mainly focused on the synthesis and surface chemical modification of nanomaterials, typically of a colloidal nature, as well as on the evaluation of the relevant properties that arise from the envisaged applications of the materials. As such, the research reviewed here has been guided along three thematic lines: 1) magnetic nanosorbents for water treatment technologies, namely by using biocomposites and graphite-like nanoplatelets; 2) nanocomposites for photocatalysis (e.g., TiO2/Fe3O4 and POM supported graphene oxide photocatalysts; photoactive membranes) and 3) nanostructured substrates for contaminant detection using surface enhanced Raman scattering (SERS), namely polymers loaded with Ag/Au colloids and magneto-plasmonic nanostructures. This research is motivated by the firm believe that these nanomaterials have potential for contributing to the solution of environmental problems and, conversely, will not be part of the problem. Therefore, assessment of the impact of nanoengineered materials on eco-systems is important and research in this area has also been developed by collaborative projects involving experts in nanotoxicity. The above topics are reviewed here by presenting a brief conceptual framework together with illustrative case studies, in some cases with original research results, mainly focusing on the chemistry of the nanomaterials investigated for target applications. Finally, near-future developments in this research area are put in perspective, forecasting realistic solutions for the application of colloidal nanoparticles in water cleaning technologies.

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Section: Nanomaterials For Water Cleaning Nanotechnologiesmentioning

confidence: 99%

Section: Nanomaterials For Water Cleaning Nanotechnologiesmentioning

confidence: 99%

Section: Nanomaterials For Water Cleaning Nanotechnologiesmentioning

confidence: 99%

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Colloidal nanomaterials for water quality improvement and monitoring

et al. 2022

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“…So far, inkjet-printing has already been employed for the fabrication of SERS-active substrates. 42,43 Two approaches are commonly reported in the literature. A rst approach is based on the deposition of inks made of metallic nanoparticles (Au, Ag) suspensions [44][45][46] which, aer sintering, allow the formation of conductive layers.…”

Section: Resultsmentioning

confidence: 99%

Anti-counterfeiting SERS security labels derived from silver nanoparticles and aryl diazonium salts

Brunie

Sun

et al. 2022

Nanoscale Adv.

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“…23 Therefore, it is crucial to modify the method for preparing filter paper-based SERS substrates. 24 Combining large-scale manufacturing technologies, such as inkjet 25 and screen printing, 26 improves the future potential of paper-based SERS swabs for practical application. Inkjet printing allows for a fast and low-cost approach to fabricate several specific domains with great potential as SERS substrates based on paper and allows precise liquid droplet deposition on the substrates.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Printed AgNPs@Paper Swab for SERS Screening of Pesticide Residues on Apples and Pears

Wang

Hao

Zhao

et al. 2023

J. Agric. Food Chem.

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In recent years, growing food safety and quality concerns have emerged and created an urgent need for the development of rapid and reliable food control technologies. This study proposes a novel surface-enhanced Raman spectroscopy (SERS) substrate printing technology that utilizes commercial filter paper functionalized by silver nanoparticles. We modified the Automatic TLC Sampler using a two-dimensional (2D) printer. The modification allows for various sampling modes which can be applied to 2D printing. The shape and size of nano silver on the substrate were determined, and the substrate sensitivity, uniformity, and stability were evaluated. As demonstrated by the experimental outcomes, the proposed technology is highly sensitive and reproducible, that is, the limit of quantitation was 10 −5 mg/kg, and the spot-to-spot and block-to-block Raman intensity variations were below 4.2%. We also successfully applied the technology to pears and apples for thiram recognition, yielding outstanding detectability down to 2.5 × 10 −6 and 3.9 × 10 −7 mg/mL (equal to 2.5 × 10 −3 and 3.9 × 10 −4 mg/kg), respectively. These were well below the maximum residue limit (7 mg/kg). More importantly, the linear relationships between thiram levels and the SERS intensity allow for sensitive monitoring of minute variations in agricultural insecticide residues. This proposed detection method can realize in situ detection with a strong signal fingerprint.

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Dendrimer stabilized nanoalloys for inkjet printing of surface-enhanced Raman scattering substrates

Cited by 13 publications

References 69 publications

Colloidal nanomaterials for water quality improvement and monitoring

Colloidal nanomaterials for water quality improvement and monitoring

Anti-counterfeiting SERS security labels derived from silver nanoparticles and aryl diazonium salts

Two-Dimensional Printed AgNPs@Paper Swab for SERS Screening of Pesticide Residues on Apples and Pears

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