Fabrication of a Flexible Gold Nanorod Polymer Metafilm via a Phase Transfer Method as a SERS Substrate for Detecting Food Contaminants

Yang, Nan; You, Tingting; Gao, Yukun; Zhang, Chen-Meng; Yin, Ping

doi:10.1021/acs.jafc.8b01702

Cited by 66 publications

(27 citation statements)

References 49 publications

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“…Importantly, this work pioneered the concept of using sticky SERS tapes for rapid analyte extraction and detection on complex surfaces which has led to an outburst of research based on this approach. 81,85,86 A major advantage that comes with the colloidal deposition approach is that it can be generally used to create flexible SERS substrates from colloidal nanoparticles with tailored morphologies, which for example include Ag/Au nanorods, 87,88 Au bipyramids, 89 Ag/Au nanoprisms, 79,90 Au@Ag nanospheres, 91 etc, and therefore improved plasmonic properties. Moreover, the plasmonic nanomaterials can be combined with other materials, such as semiconductors or carbonaceous materials to create SERS tapes carrying hybrid nanomaterials with enhanced functionalities.…”

Section: Deposition Of Preformed Plasmonic Nanoparticlesmentioning

confidence: 99%

Towards practical and sustainable SERS: a review of recent developments in the construction of multifunctional enhancing substrates

Huang

et al. 2021

J. Mater. Chem. C

120

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Section: Deposition Of Preformed Plasmonic Nanoparticlesmentioning

confidence: 99%

Towards practical and sustainable SERS: a review of recent developments in the construction of multifunctional enhancing substrates

Huang

et al. 2021

J. Mater. Chem. C

120

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“…Great efforts have been dedicated to the development of well-performing SERS substrates, which has significantly promoted SERS applications in optics, food, biodiagnostics, medicine, and environment. − In recent years, solid SERS substrates have attracted enormous attention, and commonly gold or silver nanocrystals are assembled on traditional rigid flat-based materials such as silicon wafers and glass slides. , Conventional SERS substrates can only complete the task of detection with no way to extract samples, filter impurities, and so on, which is largely restricted for on-field applications. Therefore, many researchers turn their attention to more and more functional materials, such as the filter paper, poly(dimethylsiloxane) (PDMS), adhesive tape, and capillary tube, which are adopted to fabricate simple and cost-effective SERS substrates. − These SERS-based sensors exhibit unique advantages and implement specific functions for in situ or on-site measurements. − …”

mentioning

confidence: 99%

Lab-On-Capillary Platform for On-Site Quantitative SERS Analysis of Surface Contaminants Based on Au@4-MBA@Ag Core–Shell Nanorods

et al. 2020

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A portable and highly reproducible lab-on-capillary surface-enhanced Raman scattering (SERS) platform was developed using a specially designed homemade device for rapid on-site SERS measurement. In particular, this platform was composed of a capillary with a tiny orifice, which allows an effective and lossless sample extraction, resulting in high SERS performance. The capillary-based plasmonic substrate was prepared by compactly assembling Au@Ag core–shell nanorods (NRs) embedded with the 4-mercaptobenzoic acid (4-MBA) molecule as an internal standard onto the inner wall of a capillary tube. The fabrication process is facile and convenient with no requirement for complicated procedures. The exclusively prepared nanoparticles were able to significantly improve the signal consistency and overcome the limitations of reliable quantitative SERS analysis compared with conventional methods. Importantly, it was found that this capillary-based substrate with higher sensitivity was essentially attributed to more valid nanoparticles in the effective laser excitation region derived from the unique structure of the capillary. Furthermore, the applicability of the Au@4-MBA@Ag nanorod-decorated capillary for the quantitative identification of fungicides (malachite green and crystal violet) on the shell was demonstrated. As a result, this proposed lab-on-capillary sensor holds promising practical potential for rapid on-site analysis, especially for various contaminants on an uneven surface.

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“…The bending process was shown in Figure S9d of the Supporting Information. [29,34,35] As a result, the prepared superhydrophobic 3D Ag micro/nanostructure can be further expanded to real sample application. Figure S9c of the Supporting Information, a line graph showed the intensity changing trend more clearly that bending the substrate did not affect the SERS performance of the substrates at all.…”

Section: Wwwadvmatinterfacesdementioning

confidence: 99%

Superhydrophobic 3D Forest‐Like Ag Microball/Nanodendrite Hierarchical Structure as SERS Sensor for Rapid Droplets Detection

Gao

You

Yang

et al. 2019

Adv Materials Inter

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are dedicated to find a facile and easy way preparing the 3D nanostructures with outstanding SERS performance. [17,18] Electrochemical deposition approach was commonly used for fabrication of nanostructures to obtain high catalytic effectiveness on electrodes. [19,20] It has been considered as a rapid and low-cost method for synthesizing SERS substrates in recent years. [21,22] Morphology of the substrates can be easily controlled by adjusting the voltage, constant and concentration of the analyte, greatly improving the preparing efficiency.Surface superhydrophobicity have drawn much attention in various fields for its self-cleaning and recyclable properties. [23] The surface micro/nanostructures and surface low energy modification are both needed for generating superhydrophobicity. [24] Studies on preparing SERS substrates with superhydrophobicity have been explored gradually, normally utilizing aggregation of the probe molecule droplets to enhance the detection limit. [25][26][27] However, directly using the self-cleaning property can offer more advantages for practical application of the substrate. Shin et al. prepared a novel SERS sensor with low adhesive property to detect the droplets rapidly for real-time chemical and biological monitoring. [28] Traditional SERS detection is usually proceeded by drying the probe molecule solution on substrates for contacting with the noble metal nanostructures, which needs several hours' immersing time. [29,30] If sample droplets can be tested directly on the substrate, it will greatly improve the testing efficiency and be available in practical application.We designed a 3D Ag forest-like micro/nanostructure by electrochemical deposition of Ag nanodendrites on the Ag microwool ball structures, acting as an upholder for the nanodendrites vertically growing. The deposition process was facile and needed only several minutes to generate the structures. Superior SERS performance of the substrate was verified by comparing different morphologies with Ag nanodendrites or microball structures growing on film and electromagnetic field distribution simulation. The superiority was caused by the standing nanotips on the dendrites and nanogaps among the standing Ag nanodendrites. Superhydrophobicity was induced to the substrate for the purpose of rapid detecting. Directly SERS detections on sample droplets were tested with detection Real environment detection application by surface-enhanced Raman scattering (SERS) requires substrates with high sensitivity, rapid detection, and low cost. In this study, a rapid SERS detection of liquid droplets sample by a superhydrophobic 3D forest-like Ag microball/nanodendrite hierarchical structure is reported. Easy preparation is provided by electrochemical deposition method, developing a Ag forest-like hierarchical nanostructure. The vertically standing nanodendrites offer more amounts of SERS "hot spots" for enhancing the Raman signals. At the same time, the micro/nanostructures supply suitable condition for superhydrophobicity by low surface energ...

show abstract

Fabrication of a Flexible Gold Nanorod Polymer Metafilm via a Phase Transfer Method as a SERS Substrate for Detecting Food Contaminants

Cited by 66 publications

References 49 publications

Towards practical and sustainable SERS: a review of recent developments in the construction of multifunctional enhancing substrates

Towards practical and sustainable SERS: a review of recent developments in the construction of multifunctional enhancing substrates

Lab-On-Capillary Platform for On-Site Quantitative SERS Analysis of Surface Contaminants Based on Au@4-MBA@Ag Core–Shell Nanorods

Superhydrophobic 3D Forest‐Like Ag Microball/Nanodendrite Hierarchical Structure as SERS Sensor for Rapid Droplets Detection

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