Loading of Exponentially Grown LBL Films with Silver Nanoparticles and Their Application to Generalized SERS Detection

Abalde‐Cela, Sara; Ho, Szushen; Rodríguez‐González, Benito; Correa‐Duarte, Miguel A.; Álvarez‐Puebla, Ramón A.; Liz‐Marzán, Luis M.; Kotov, Nicholas A.

doi:10.1002/ange.200901807

Cited by 39 publications

(36 citation statements)

References 55 publications

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“…Confinement of nanoparticles in a limited space creates the so-called "hot spots", which increase even more the intensity of RS of molecules located in this area. The most commonly used preparation method is the LbL assembly technique [63,65]. The most commonly used preparation method is the LbL assembly technique [63,65].…”

Section: Effective Sers Materialsmentioning

confidence: 99%

7. Micro and nanocapsules as supports for Surface- Enhanced Raman Spectroscopy (SERS)

Jastrząb¹

2015

Microencapsulation

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Section: Effective Sers Materialsmentioning

confidence: 99%

7. Micro and nanocapsules as supports for Surface- Enhanced Raman Spectroscopy (SERS)

Jastrząb¹

2015

Microencapsulation

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“…Recently, the successful use of single wall carbon nanotube as a detection element for determining non-dioxin-like PCBs has been reported [111,112]. Other physical methods that are worth mentioning are nanostructured-based surface-enhanced Raman scattering spectroscopy [113–119], fluorescence quenching and enhancement [120] and the use of surface photo voltage [121] and porous anodic alumina (PAA) based capacitive sensors [122]. With these approaches PCB trace detection has been reported to be successfully established.…”

Section: Assays For Detecting Dioxins and Dl-pcbs In The Food Chainmentioning

confidence: 99%

The Need and Potential of Biosensors to Detect Dioxins and Dioxin-Like Polychlorinated Biphenyls along the Milk, Eggs and Meat Food Chain

Chobtang

Boer

Hoogenboom

et al. 2011

Sensors

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Dioxins and dioxin-like polychlorinated biphenyls (DL-PCBs) are hazardous toxic, ubiquitous and persistent chemical compounds, which can enter the food chain and accumulate up to higher trophic levels. Their determination requires sophisticated methods, expensive facilities and instruments, well-trained personnel and expensive chemical reagents. Ideally, real-time monitoring using rapid detection methods should be applied to detect possible contamination along the food chain in order to prevent human exposure. Sensor technology may be promising in this respect. This review gives the state of the art for detecting possible contamination with dioxins and DL-PCBs along the food chain of animal-source foods. The main detection methods applied (i.e., high resolution gas-chromatography combined with high resolution mass-spectrometry (HRGC/HRMS) and the chemical activated luciferase gene expression method (CALUX bioassay)), each have their limitations. Biosensors for detecting dioxins and related compounds, although still under development, show potential to overcome these limitations. Immunosensors and biomimetic-based biosensors potentially offer increased selectivity and sensitivity for dioxin and DL-PCB detection, while whole cell-based biosensors present interpretable biological results. The main shortcoming of current biosensors, however, is their detection level: this may be insufficient as limits for dioxins and DL-PCBs for food and feedstuffs are in pg per gram level. In addition, these contaminants are normally present in fat, a difficult matrix for biosensor detection. Therefore, simple and efficient extraction and clean-up procedures are required which may enable biosensors to detect dioxins and DL-PCBs contamination along the food chain.

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“…silver nanocubes, gold nanorods, binary metal nanodumbbells and silver dentrites) and with the capability for detection of ultra-low concentrations (Murphy et al 2005;Nikoobakht et al 2002;Ren et al 2011;Sun and Xia 2002). Self-assembled nanocrystals on a solid support form two-and three-dimensional (2D and 3D) active SERS platforms (Abalde-Cela et al 2009;Li et al 2004;Peng et al 2011;Schmit et al 2011;Surovtsev et al 2010;Tao et al 2007). The array of nanoparticles on the solid support enables SERS substrates to exhibit high sensitivity because the interparticle spacing result in more 'hot spots'.…”

Section: Introductionmentioning

confidence: 99%

Assembly of metal nanoparticles on regenerated fibers from wood sawdust and de-inked pulp: flexible substrates for surface enhanced Raman scattering (SERS) applications

Kong

Reza

et al. 2015

Cellulose

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We report on simple and low-cost active SERS substrates made using regenerated fibers from wood products. Glycidyltrimethylammonium chloride (GTAC) was used to graft ammonium groups on the fibers' surfaces under strong alkaline conditions. After GTAC treatment, citrate-stabilized nanoparticles were assembled via electrostatic interaction. X-ray diffraction, Scanning electron microscopy images and optical photographs indicated that the surfaces of the fibers were conformally coated with metal nanoparticles. We also observed that after being cationized, the fibers experienced significant swelling and shrinking under dry and wet conditions. Rhodamine 6G was used as probe molecule to test the SERS performance of the substrates-concentrations as low as 10 -9 M were detected. Furthermore, the modified fibers were used to detect melamine, illustrating their potential as viable substrates for applications such as markers for the quality and shelf-life of food products and detection of toxins.

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Loading of Exponentially Grown LBL Films with Silver Nanoparticles and Their Application to Generalized SERS Detection

Cited by 39 publications

References 55 publications

7. Micro and nanocapsules as supports for Surface- Enhanced Raman Spectroscopy (SERS)

7. Micro and nanocapsules as supports for Surface- Enhanced Raman Spectroscopy (SERS)

The Need and Potential of Biosensors to Detect Dioxins and Dioxin-Like Polychlorinated Biphenyls along the Milk, Eggs and Meat Food Chain

Assembly of metal nanoparticles on regenerated fibers from wood sawdust and de-inked pulp: flexible substrates for surface enhanced Raman scattering (SERS) applications

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