Flexible and transparent Au nanoparticle/graphene/Au nanoparticle ‘sandwich’ substrate for surface-enhanced Raman scattering

Dong, Jun; Zhao, Xing; Cao, En; Han, Qingyan; Liu, Liang; Zhang, Wenwen; Gao, Wei; Shi, Jian; Zheng, Zhuan‐Ping; Han, Dongdong; Sun, Mengtao

doi:10.1016/j.mtnano.2019.100067

Cited by 34 publications

(13 citation statements)

References 30 publications

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“…The facile drop-cast method was utilized to prepare the vertical superlattice of BNCs, as is shown in Figure a. Through the Marangoni effect in drops, the vertically aligned BNCs can be achieved at proper temperature and humidity. , After the slow evaporation, the superlattice pattern was finally obtained with a bright metallic luster. As shown in the SEM image of BNCs (Figure b), the BNCs are aligned vertically and side-by-side to form a superlattice.…”

Section: Resultsmentioning

confidence: 99%

Au/Ag Bimetallic Nanocuboid Superlattices Coated with Ti₃C₂ Nanosheets for Surface-Enhanced Raman Spectroscopy Detection of Fish Drug Residues in Pond Water

Miao

Kuo

Zong

et al. 2021

ACS Appl. Nano Mater.

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Applying nanomaterials to highly sensitive, fast, and accurate detection of hazardous chemicals in water remains to be a great challenge. Herein, a Ti 3 C 2 -functionalized superlattice SERS substrate was developed, which can identify multiplex fish drug residues in pond water with a high sensitivity and reliable reproducibility. Specifically, a superlattice substrate was fabricated by vertically self-assembled bimetallic nanocuboids (BNCs) through the Marangoni effect, which exhibited an excellent SERS activity. Furthermore, the modification of the Ti 3 C 2 layer endows the substrate with both an increased SERS signal and an enhanced adsorption for multiple fish drugs, including crystal violet (CV), malachite green (MG), and methylene blue (MB). The limit of detection (LOD) was as low as 10 −12 M, while the signal fluctuation was as small as ∼5.9% between batches. More importantly, a trace amount of multiplex fish drug residues was detected in natural pond water, demonstrating a convincing practicality of such a Ti 3 C 2 -functionalized superlattice SERS substrate.

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Section: Resultsmentioning

confidence: 99%

Au/Ag Bimetallic Nanocuboid Superlattices Coated with Ti₃C₂ Nanosheets for Surface-Enhanced Raman Spectroscopy Detection of Fish Drug Residues in Pond Water

Miao

Kuo

Zong

et al. 2021

ACS Appl. Nano Mater.

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“…In addition to flat substrates such as wafer or glass, metal-graphene hybrid SERS substrates have been developed with polymers for three-dimensional (3D) structuring [ 69 , 72 , 77 ] and flexibility [ 78 – 80 ]. Leem et al reported mechanically self-assembled AuNPs on 3D structured graphene/polystyrene (PS) substrates [ 72 ].…”

Section: Plasmonic Effect Of Graphene-based Hybrid Materialsmentioning

confidence: 99%

“…The 3D structured AuNPs/graphene hybrid substrates showed at least 10 times higher Raman enhancement when compared to flat AuNPs/graphene substrates due to denser nanoplasmonic “hot spots” and reduced distances between AuNPs by 3D structuring. Xu et al first demonstrated a poly(methyl methacrylate) (PMMA)/AuNPs/graphene hybrid structure as a graphene-SERS tape floating on solution [ 79 ], and Dong et al further developed an AuNPs/graphene/AuNPs sandwich structure with polyethylene (PE) film as a flexible SERS substrate [ 80 ].…”

Section: Plasmonic Effect Of Graphene-based Hybrid Materialsmentioning

confidence: 99%

“…Nguyen et al adopted graphene/Au film/Au nanorod hybrid structures for detecting pesticides including azinphos-methyl, carbaryl, and phosmet with detection limits of 5, 5, and 9 ppm, respectively [ 134 ]. Dong et al fabricated flexible AuNPs/graphene/Au NPs sandwich structures as SERS substrates with R6G as the target analyte [ 80 ]. Their sandwich structure exhibited extremely low detection limits, down to 10 − 9 M. These sensors were additionally applied for more practical chemical detection, such as detecting thiram from orange peels.…”

Section: Plasmonic Sensing Applicationsmentioning

confidence: 99%

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Plasmonic sensors based on graphene and graphene hybrid materials

et al. 2022

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The past decade has witnessed a rapid growth of graphene plasmonics and their applications in different fields. Compared with conventional plasmonic materials, graphene enables highly confined plasmons with much longer lifetimes. Moreover, graphene plasmons work in an extended wavelength range, i.e., mid-infrared and terahertz regime, overlapping with the fingerprints of most organic and biomolecules, and have broadened their applications towards plasmonic biological and chemical sensors. In this review, we discuss intrinsic plasmonic properties of graphene and strategies both for tuning graphene plasmons as well as achieving higher performance by integrating graphene with plasmonic nanostructures. Next, we survey applications of graphene and graphene-hybrid materials in biosensors, chemical sensors, optical sensors, and sensors in other fields. Lastly, we conclude this review by providing a brief outlook and challenges of the field. Through this review, we aim to provide an overall picture of graphene plasmonic sensing and to suggest future trends of development of graphene plasmonics.

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“…A large number of studies have shown that the absorption and scattering frequencies of surface plasmon resonance (SPR) can be selectively adjusted by changing the morphology, size, structure, and arrangement of noble metal nanoparticles and the local electromagnetic field on the substrate surface can be further enhanced. , On the one hand, researchers improved their SERS effect by preparing metal nanoparticles with different morphologies and sizes, such as spheres, triangles, cubes, tetrahedrons, regular octahedrons, etc. − On the other hand, changing the structure of nanoparticles can better adjust the optical properties of the sample. For example, the core–shell structure can effectively adjust the sample’s position of the absorption peak, which can be better coupled with the excitation light .…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Self-Assembly of Au@Ag Core–Shell Nanocubes with Different Permutations for Ultrasensitive SERS Measurements

Dong

Yang

et al. 2022

ACS Omega

Self Cite

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Different self-assembly methods not only directly change the arrangement of noble metal particles on the substrate but also indirectly affect the local electromagnetic field distribution and intensity of the substrate under specific optical excitation conditions, which leads to distinguished different enhancement effects of the structure on molecular Raman signals. In this paper, first, the gold species growth method was used to prepare the silver-coated gold nanocubes (Au@Ag NCs) with regular morphology and uniform size, and then the two-phase and three-phase liquid–liquid self-assembly and evaporation-induced self-assembly methods were used to obtain the substrate structure with different NC arrangement patterns. The optimal arrangement of NCs was found by transverse comparison of Raman signal detection of probe molecules with the same concentration. Subsequently, surface-enhanced Raman scattering (SERS) measurements of Rhodamine (Rh6G) and aspartame (APM) were carried out. Furthermore, the finite element method (FEM) was employed to calculate the local electromagnetic fields of the substrates with different Au@Ag NC arrangements, and the calculated results were in agreement with the experimental results. The experimental results show that the SERS-active substrate was largely associated with the different arrangements of Au@Ag NCs, and the island membrane Au@Ag NCs array substrate obtained by evaporation-induced self-assembly can generate a strong local electromagnetic field due to the edge and corner bonding gap between the tightly arranged NCs; this endows the substrate with benign sensitivity and reproducibility and has great potential in molecular detection, biosensing, and food safety monitoring.

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Flexible and transparent Au nanoparticle/graphene/Au nanoparticle ‘sandwich’ substrate for surface-enhanced Raman scattering

Cited by 34 publications

References 30 publications

Au/Ag Bimetallic Nanocuboid Superlattices Coated with Ti₃C₂ Nanosheets for Surface-Enhanced Raman Spectroscopy Detection of Fish Drug Residues in Pond Water

Au/Ag Bimetallic Nanocuboid Superlattices Coated with Ti₃C₂ Nanosheets for Surface-Enhanced Raman Spectroscopy Detection of Fish Drug Residues in Pond Water

Plasmonic sensors based on graphene and graphene hybrid materials

Two-Dimensional Self-Assembly of Au@Ag Core–Shell Nanocubes with Different Permutations for Ultrasensitive SERS Measurements

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Flexible and transparent Au nanoparticle/graphene/Au nanoparticle ‘sandwich’ substrate for surface-enhanced Raman scattering

Cited by 34 publications

References 30 publications

Au/Ag Bimetallic Nanocuboid Superlattices Coated with Ti3C2 Nanosheets for Surface-Enhanced Raman Spectroscopy Detection of Fish Drug Residues in Pond Water

Au/Ag Bimetallic Nanocuboid Superlattices Coated with Ti3C2 Nanosheets for Surface-Enhanced Raman Spectroscopy Detection of Fish Drug Residues in Pond Water

Plasmonic sensors based on graphene and graphene hybrid materials

Two-Dimensional Self-Assembly of Au@Ag Core–Shell Nanocubes with Different Permutations for Ultrasensitive SERS Measurements

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Product

Resources

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Au/Ag Bimetallic Nanocuboid Superlattices Coated with Ti₃C₂ Nanosheets for Surface-Enhanced Raman Spectroscopy Detection of Fish Drug Residues in Pond Water

Au/Ag Bimetallic Nanocuboid Superlattices Coated with Ti₃C₂ Nanosheets for Surface-Enhanced Raman Spectroscopy Detection of Fish Drug Residues in Pond Water