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A needle-like reusable surface-enhanced Raman scattering substrate, and its application to the determination of acetamiprid by combining SERS and thin-layer chromatography. Mikrochim Acta 2018; 185:504. [DOI: 10.1007/s00604-018-3034-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Accepted: 09/28/2018] [Indexed: 10/28/2022]
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52
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Vianna PG, Grasseschi D, Domingues SH, de Matos CJS. Real-time optofluidic surface-enhanced Raman spectroscopy based on a graphene oxide/gold nanorod nanocomposite. OPTICS EXPRESS 2018; 26:22698-22708. [PMID: 30184926 DOI: 10.1364/oe.26.022698] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 08/07/2018] [Indexed: 06/08/2023]
Abstract
We demonstrate a glass microcapillary fiber as an optofluidic platform for surface enhanced Raman spectroscopy (SERS), the inner walls of which are coated with a graphene oxide (GO)/gold nanorod (AuNR) nanocomposite. A simple thermal method is used for the coating, allowing for the continuous deposition of the nanocomposite without surface functionalization. We show that the AuNRs can be directly and nondestructively identified on the GO inside the capillaries via identification of the Au-Br SERS peak, as Br- ions from the AuNR synthesis remain on their surface. The coated microcapillary platform is, then, used as a stable SERS substrate for the detection of Rhodamine 6G (R6G) and Rhodamine 640 (RH640) at concentrations down to 10-7 and 10-9 M, respectively. As the required sample volumes are as low as a few hundred nanoliters, down to ~75 femtograms of analyte can be detected. The fiber also allows for the detection of the molecules at acquisition times as low as 0.05 s, indicating the platform's suitability for real-time sensing.
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53
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Protein-sheathed SWNT as a versatile scaffold for nanoparticle assembly and superstructured nanowires. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9307-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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54
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Shi R, Liu X, Ying Y. Facing Challenges in Real-Life Application of Surface-Enhanced Raman Scattering: Design and Nanofabrication of Surface-Enhanced Raman Scattering Substrates for Rapid Field Test of Food Contaminants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:6525-6543. [PMID: 28920678 DOI: 10.1021/acs.jafc.7b03075] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Surface-enhanced Raman scattering (SERS) is capable of detecting a single molecule with high specificity and has become a promising technique for rapid chemical analysis of agricultural products and foods. With a deeper understanding of the SERS effect and advances in nanofabrication technology, SERS is now on the edge of going out of the laboratory and becoming a sophisticated analytical tool to fulfill various real-world tasks. This review focuses on the challenges that SERS has met in this progress, such as how to obtain a reliable SERS signal, improve the sensitivity and specificity in a complex sample matrix, develop simple and user-friendly practical sensing approach, reduce the running cost, etc. This review highlights the new thoughts on design and nanofabrication of SERS-active substrates for solving these challenges and introduces the recent advances of SERS applications in this area. We hope that our discussion will encourage more researches to address these challenges and eventually help to bring SERS technology out of the laboratory.
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Affiliation(s)
- Ruyi Shi
- College of Biosystems Engineering and Food Science , Zhejiang University , 866 Yuhangtang Road , Hangzhou , Zhejiang 310058 , China
| | - Xiangjiang Liu
- College of Biosystems Engineering and Food Science , Zhejiang University , 866 Yuhangtang Road , Hangzhou , Zhejiang 310058 , China
| | - Yibin Ying
- College of Biosystems Engineering and Food Science , Zhejiang University , 866 Yuhangtang Road , Hangzhou , Zhejiang 310058 , China
- Zhejiang A&F University , 88 Huanchengdong Road , Hangzhou , Zhejiang 311300 , China
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55
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56
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Microstructured Waveguides with Polyelectrolyte-Stabilized Gold Nanostars for SERS Sensing of Dissolved Analytes. MATERIALS 2018; 11:ma11050734. [PMID: 29734729 PMCID: PMC5978111 DOI: 10.3390/ma11050734] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 04/28/2018] [Accepted: 05/03/2018] [Indexed: 11/17/2022]
Abstract
A sensor based on microstructured waveguides (MWGs) with a hollow core inner surface covered with polyelectrolyte-layer-stabilized gold nanostars was developed for the SERS sensing of dissolved analytes. A polyelectrolyte-layer coating over the inner surface of glass cladding served as a spacer, reducing nonlinear optical effects in the glass near plasmonic hotspots of nanoparticles, as a stabilizing agent for thermodynamically unstable gold nanostars and as an optical coating for the fine-tuning of MWG bandgaps. This approach can be used to construct different kinds of SERS sensors for dissolved analytes, providing conservation, the prevention of coagulation, and the drying of a liquid sample for the time required to record the signal.
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57
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Managò S, Zito G, Rogato A, Casalino M, Esposito E, De Luca AC, De Tommasi E. Bioderived Three-Dimensional Hierarchical Nanostructures as Efficient Surface-Enhanced Raman Scattering Substrates for Cell Membrane Probing. ACS APPLIED MATERIALS & INTERFACES 2018; 10:12406-12416. [PMID: 29569901 DOI: 10.1021/acsami.7b19285] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
In this work, we propose the use of complex, bioderived nanostructures as efficient surface-enhanced Raman scattering (SERS) substrates for chemical analysis of cellular membranes. These structures were directly obtained from a suitable gold metalization of the Pseudonitzchia multistriata diatom silica shell (the so called frustule), whose grating-like geometry provides large light coupling with external radiation, whereas its extruded, subwavelength lateral edge provides an excellent interaction with cells without steric hindrance. We carried out numerical simulations and experimental characterizations of the supported plasmonic resonances and optical near-field amplification. We thoroughly evaluated the SERS substrate enhancement factor as a function of the metalization parameters and finally applied the nanostrucures for discriminating cell membrane Raman signals. In particular, we considered two cases where the membrane composition plays a fundamental role in the assessment of several pathologies, that is, red blood cells and B-leukemia REH cells.
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Affiliation(s)
| | | | - Alessandra Rogato
- Department of Integrative Marine Ecology , Stazione Zoologica Anton Dohrn , Naples 80121 , Italy
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58
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Lee M, Oh K, Choi HK, Lee SG, Youn HJ, Lee HL, Jeong DH. Subnanomolar Sensitivity of Filter Paper-Based SERS Sensor for Pesticide Detection by Hydrophobicity Change of Paper Surface. ACS Sens 2018; 3:151-159. [PMID: 29282983 DOI: 10.1021/acssensors.7b00782] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
As a cost-effective approach for detecting trace amounts of pesticides, filter paper-based SERS sensors have been the subject of intensive research. One of the hurdles to overcome is the difficulty of retaining nanoparticles on the surface of the paper because of the hydrophilic nature of the cellulose fibers in paper. This reduces the sensitivity and reproducibility of paper-based SERS sensors due to the low density of nanoparticles and short retention time of analytes on the paper surface. In this study, filter paper was treated with alkyl ketene dimer (AKD) to modify its property from hydrophilic to hydrophobic. AKD treatment increased the contact angle of the aqueous silver nanoparticle (AgNP) dispersion, which consequently increased the density of AgNPs. The retention time of the analyte was also increased by preventing its rapid absorption into the filter paper. The SERS signal was strongly enhanced by the increased number of SERS hot spots owing to the increased density of AgNPs on a small contact area of the filter surface. The reproducibility and sensitivity of the SERS signal were optimized by controlling the distribution of AgNPs on the surface of the filter paper by adjusting the concentration of the AgNP solution. Using this SERS sensor with a hydrophobicity-modified filter paper, the spot-to-spot variation of the SERS intensity of 25 spots of 4-aminothiophenol was 6.19%, and the limits of detection of thiram and ferbam as test pesticides were measured to be 0.46 nM and 0.49 nM, respectively. These proof-of-concept results indicate that this paper-based SERS sensor can serve for highly sensitive pesticide detection with low cost and easy fabrication.
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Affiliation(s)
- Minwoo Lee
- Department of Chemistry Education, College of Education, ‡Department of Forest
Sciences, College of Agriculture and Life Sciences, §Research Institute of Agriculture and
Life Sciences, and ⊥Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Korea
| | - Kyudeok Oh
- Department of Chemistry Education, College of Education, ‡Department of Forest
Sciences, College of Agriculture and Life Sciences, §Research Institute of Agriculture and
Life Sciences, and ⊥Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Korea
| | - Han-Kyu Choi
- Department of Chemistry Education, College of Education, ‡Department of Forest
Sciences, College of Agriculture and Life Sciences, §Research Institute of Agriculture and
Life Sciences, and ⊥Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Korea
| | - Sung Gun Lee
- Department of Chemistry Education, College of Education, ‡Department of Forest
Sciences, College of Agriculture and Life Sciences, §Research Institute of Agriculture and
Life Sciences, and ⊥Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Korea
| | - Hye Jung Youn
- Department of Chemistry Education, College of Education, ‡Department of Forest
Sciences, College of Agriculture and Life Sciences, §Research Institute of Agriculture and
Life Sciences, and ⊥Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Korea
| | - Hak Lae Lee
- Department of Chemistry Education, College of Education, ‡Department of Forest
Sciences, College of Agriculture and Life Sciences, §Research Institute of Agriculture and
Life Sciences, and ⊥Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Korea
| | - Dae Hong Jeong
- Department of Chemistry Education, College of Education, ‡Department of Forest
Sciences, College of Agriculture and Life Sciences, §Research Institute of Agriculture and
Life Sciences, and ⊥Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 08826, Korea
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Banchelli M, de Angelis M, D'Andrea C, Pini R, Matteini P. Triggering molecular assembly at the mesoscale for advanced Raman detection of proteins in liquid. Sci Rep 2018; 8:1033. [PMID: 29348509 PMCID: PMC5773671 DOI: 10.1038/s41598-018-19558-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 12/21/2017] [Indexed: 01/14/2023] Open
Abstract
An advanced optofluidic system for protein detection based on Raman signal amplification via dewetting and molecular gathering within temporary mesoscale assemblies is presented. The evaporation of a microliter volume of protein solution deposited in a circular microwell precisely follows an outward-receding geometry. Herein the combination of liquid withdrawal with intermolecular interactions induces the formation of self-assembled molecular domains at the solid-liquid interface. Through proper control of the evaporation rate, amplitude of the assemblies and time for spectral collection at the liquid edge are extensively raised, resulting in a local enhancement and refinement of the Raman response, respectively. Further signal amplification is obtained by taking advantage of the intense local electromagnetic fields generated upon adding a plasmonic coating to the microwell. Major advantages of this optofluidic method lie in the obtainment of high-quality, high-sensitivity Raman spectra with detection limit down to sub-micromolar values. Peculiarly, the assembled proteins in the liquid edge region maintain their native-like state without displaying spectral changes usually occurring when dried drop deposits are considered.
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Affiliation(s)
- Martina Banchelli
- Institute of Applied Physics 'Nello Carrara', National Research Council (IFAC-CNR), via Madonna del Piano 10, Sesto Fiorentino, Italy
| | - Marella de Angelis
- Institute of Applied Physics 'Nello Carrara', National Research Council (IFAC-CNR), via Madonna del Piano 10, Sesto Fiorentino, Italy
| | - Cristiano D'Andrea
- Institute of Applied Physics 'Nello Carrara', National Research Council (IFAC-CNR), via Madonna del Piano 10, Sesto Fiorentino, Italy
| | - Roberto Pini
- Institute of Applied Physics 'Nello Carrara', National Research Council (IFAC-CNR), via Madonna del Piano 10, Sesto Fiorentino, Italy
| | - Paolo Matteini
- Institute of Applied Physics 'Nello Carrara', National Research Council (IFAC-CNR), via Madonna del Piano 10, Sesto Fiorentino, Italy.
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60
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Zhu J, Liu MJ, Li JJ, Li X, Zhao JW. Multi-branched gold nanostars with fractal structure for SERS detection of the pesticide thiram. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 189:586-593. [PMID: 28881284 DOI: 10.1016/j.saa.2017.08.074] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 08/14/2017] [Accepted: 08/31/2017] [Indexed: 05/16/2023]
Abstract
The surface-enhanced Raman scattering (SERS) activity of multi-branched gold nanostars with fractal structure has been investigated for trace detection of pesticide thiram. Raman spectrum results show that the gold nanostars substrate can produce about 102 fold stronger signal than the thiram alone with the thiram concentration increase of 103 times and 1.4 fold stronger signal than the gold nanostars without fractal feature. In the detection procedure, the most prominent SERS peak at 1376cm-1 has been chosen to characterize and quantify the concentration of thiram. Experimental results indicate this Raman substrate based on fractal gold nanostars exhibits excellent selective probing performance for thiram with a detection limit as low as 10-10M in solution and 0.24ng/cm2 in apple peels. Interference experiment results show that the effects from the interfering pesticides could be neglected in the detection procedure. Therefore, the gold nanostars as a SERS substrate have excellent sensitivity and selectivity.
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Affiliation(s)
- Jian Zhu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Mei-Jin Liu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jian-Jun Li
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xin Li
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jun-Wu Zhao
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China.
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61
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Chen C, Tang Y, Vlahovic B, Yan F. Electrospun Polymer Nanofibers Decorated with Noble Metal Nanoparticles for Chemical Sensing. NANOSCALE RESEARCH LETTERS 2017; 12:451. [PMID: 28704979 PMCID: PMC5505893 DOI: 10.1186/s11671-017-2216-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Accepted: 06/28/2017] [Indexed: 05/28/2023]
Abstract
The integration of different noble metal nanostructures, which exhibit desirable plasmonic and/or electrocatalytic properties, with electrospun polymer nanofibers, which display unique mechanical and thermodynamic properties, yields novel hybrid nanoscale systems of synergistic properties and functions. This review summarizes recent advances on how to incorporate noble metal nanoparticles into electrospun polymer nanofibers and illustrates how such integration paves the way towards chemical sensing applications with improved sensitivity, stability, flexibility, compatibility, and selectivity. It is expected that further development of this field will eventually make a wide impact on many areas of research.
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Affiliation(s)
- Chen Chen
- Department of Chemistry and Biochemistry, North Carolina Central University, Durham, North Carolina, 27707, USA
| | - Yongan Tang
- Department of Mathematics and Physics, North Carolina Central University, Durham, North Carolina, 27707, USA
| | - Branislav Vlahovic
- Department of Mathematics and Physics, North Carolina Central University, Durham, North Carolina, 27707, USA
| | - Fei Yan
- Department of Chemistry and Biochemistry, North Carolina Central University, Durham, North Carolina, 27707, USA.
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62
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Liu Y, Deng C, Yi D, Wang X, Tang Y, Wang Y. Silica nanowire assemblies as three-dimensional, optically transparent platforms for constructing highly active SERS substrates. NANOSCALE 2017; 9:15901-15910. [PMID: 28994840 DOI: 10.1039/c7nr06662g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Three-dimensional surface-enhanced Raman scattering (SERS) substrates are prepared via the in situ deposition of silver nanoparticles (AgNPs) on silica nanowire (SiO2 NW) assemblies, either in a free-standing membrane structure or as an optically transparent film supported on Scotch tape. The negatively charged surface of the SiO2 NW favors Ag+ ion enrichment around itself, with the ions forming densely deposited AgNPs on the NW after reducing agents are added to the solution. A SERS substrate with high sensitivity is achieved owing to abundant "hot spots" generated by the inter-AgNP gaps in the 3D geometry of the NW networks. The AgNP-deposited SiO2 NW membrane has a SERS enhancement factor of 2.9 × 108 and a detection limit of 10-9 M towards 4-mercaptopyridine probing and 10-8 M towards dithiocarbamate pesticide (i.e., thiram) probing. Moreover, the AgNP-deposited, Scotch tape-supported SiO2 NW film achieves non-invasive, direct detection of real-world surfaces due to its high sensitivity, high flexibility and optically transparent properties.
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Affiliation(s)
- Yinghua Liu
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China.
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63
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Song JE, Kim H, Lee SW, Cho EC. Nanoscale Structural Switching of Plasmonic Nanograin Layers on Hydrogel Colloidal Monolayers for Highly Sensitive and Dynamic SERS in Water with Areal Signal Reproducibility. Anal Chem 2017; 89:11259-11268. [PMID: 28953360 DOI: 10.1021/acs.analchem.7b01021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Developing substrates that enable both reproducible and highly sensitive Raman detection of trace amounts of molecules in aqueous systems remains a challenge, although these substrates are crucial in biomedicine and environmental sciences. To address this issue, we report spatially uniform plasmonic nanowrinkles formed by intimate contact between plasmonic nanograins on the surface of colloidal crystal monolayers. The Au or Ag nanograin layers coated on hydrogel colloidal crystal monolayers can reversibly wrinkle and unwrinkle according to changes in the water temperature. The reversible switches are directed by surface structural changes in the colloidal crystal monolayers, while the colloids repeat the hydration-dehydration process. The Au and Ag nanowrinkles are obtained upon hydration, thus enabling the highly reproducible detection of Raman probes in water at the nano- and picomolar levels, respectively, throughout the entire substrate area. Additionally, the reversible switching of the nanostructures in the plasmonic nanograin layers causes reversible dynamic changes in the corresponding Raman signals upon varying the water temperature.
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Affiliation(s)
- Ji Eun Song
- Department of Chemical Engineering, Hanyang University , Seoul, 04763, South Korea
| | - Hakseong Kim
- Korea Research Institute of Standards and Science (KRISS) , Daejeon, 34113, South Korea
| | - Sang Wook Lee
- Department of Physics, Ewha Womans University , Seoul, 03760, South Korea
| | - Eun Chul Cho
- Department of Chemical Engineering, Hanyang University , Seoul, 04763, South Korea
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64
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Wang C, Xu D, Wang Y, Wang L, Chen L, Xue X, Qin Z. Preparation of Silver Nanocap Arrays and Their Surface-enhanced Raman Scattering Activity. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chunxu Wang
- College of Information & Technology; Jilin Normal University; Siping 136000 P.R. China
| | - Duo Xu
- College of Information & Technology; Jilin Normal University; Siping 136000 P.R. China
| | - Yuhai Wang
- College of Information & Technology; Jilin Normal University; Siping 136000 P.R. China
| | - Li Wang
- College of Chemistry; Jilin Normal University; Siping 136000 P.R. China
| | - Lei Chen
- College of Chemistry; Jilin Normal University; Siping 136000 P.R. China
| | - Xiangxin Xue
- College of Chemistry; Jilin Normal University; Siping 136000 P.R. China
| | - Zhengkun Qin
- College of Information & Technology; Jilin Normal University; Siping 136000 P.R. China
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65
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Lai CH, Wang GA, Ling TK, Wang TJ, Chiu PK, Chou Chau YF, Huang CC, Chiang HP. Near infrared surface-enhanced Raman scattering based on star-shaped gold/silver nanoparticles and hyperbolic metamaterial. Sci Rep 2017; 7:5446. [PMID: 28710494 PMCID: PMC5511255 DOI: 10.1038/s41598-017-05939-0] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 06/06/2017] [Indexed: 11/18/2022] Open
Abstract
It is desirable to extend the surface-enhanced Raman scattering (SERS) from the conventionally used visible range into the infrared region, because the fluorescence background is lower in the long-wavelength regime. To do this, it is important to have a SERS substrate suitable for infrared operation. In this work, we report the near infrared SERS operation based on the substrates employing star-shaped gold/silver nanoparticles and hyperbolic metamaterial (HMM) structure. We first fabricate the SERS substrate in which nanoparticles are separated from a silver film by a thin dielectric layer. Performance of the SERS substrate is investigated with a 1064-nm excitation source. Compared with similar silver film-based substrates employing respectively gold and silver spherical nanoparticles, it is found that, Raman intensity scattered by the substrate with star-shaped nanoparticles is 7.4 times stronger than that with gold nanoparticles, and 3.4 times stronger than that with silver nanoparticles. Following this, we fabricate the SERS substrate where the star-shaped nanoparticles are deposited over a HMM structure. The HMM structure comprises three pairs of germanium-silver multilayers. Further experimental result shows that, with the star-shaped nanoparticles, the HMM-based substrate yields 30% higher Raman intensity for near infrared SERS operation than the silver film-based substrate does.
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Affiliation(s)
- Chih-Hsien Lai
- Department of Electronic Engineering, National Yunlin University of Science and Technology, Yunlin, 64002, Taiwan
| | - Guo-An Wang
- Institute of Optoelectronic Sciences, National Taiwan Ocean University, Keelung, 20224, Taiwan
| | - Tsung-Kai Ling
- Institute of Optoelectronic Sciences, National Taiwan Ocean University, Keelung, 20224, Taiwan
| | - Tzyy-Jiann Wang
- Institute of Electro-Optical Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan
| | - Po-Kai Chiu
- Instrument Technology Research Center, National Applied Research Laboratories, Hsinchu, Taiwan
| | - Yuan-Fong Chou Chau
- Centre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Tungku Link, Gadong, BE1410, Negara, Brunei Darussalam
| | - Chih-Ching Huang
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung, 20224, Taiwan
| | - Hai-Pang Chiang
- Institute of Optoelectronic Sciences, National Taiwan Ocean University, Keelung, 20224, Taiwan. .,Institute of Physics, Academia Sinica, Taipei, 11529, Taiwan.
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66
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Time resolved and label free monitoring of extracellular metabolites by surface enhanced Raman spectroscopy. PLoS One 2017; 12:e0175581. [PMID: 28419111 PMCID: PMC5395151 DOI: 10.1371/journal.pone.0175581] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 03/28/2017] [Indexed: 11/20/2022] Open
Abstract
Metabolomics is an emerging field of cell biology that aims at the comprehensive identification of metabolite levels in biological fluids or cells in a specific functional state. Currently, the major tools for determining metabolite concentrations are mass spectrometry coupled with chromatographic techniques and nuclear magnetic resonance, which are expensive, time consuming and destructive for the samples. Here, we report a time resolved approach to monitor metabolite dynamics in cell cultures, based on Surface Enhanced Raman Scattering (SERS). This method is label-free, easy to use and provides the opportunity to simultaneously study a broad range of molecules, without the need to process the biological samples. As proof of concept, NIH/3T3 cells were cultured in vitro, and the extracellular medium was collected at different time points to be analyzed with our engineered SERS substrates. By identifying individual peaks of the Raman spectra, we showed the simultaneous detection of several components of the conditioned medium, such as L-tyrosine, L-tryptophan, glycine, L-phenylalanine, L-histidine and fetal bovine serum proteins, as well as their intensity changes during time. Furthermore, analyzing the whole Raman data set with the Principal Component Analysis (PCA), we demonstrated that the Raman spectra collected at different days of culture and clustered by similarity, described a well-defined trajectory in the principal component plot. This approach was then utilized to determine indirectly the functional state of the macrophage cell line Raw 264.7, stimulated with the lipopolysaccharide (LPS) for 24 hours. The collected spectra at different time points, clustered by the PCA analysis, followed a well-defined trajectory, corresponding to the functional change of cells toward the activated pro-inflammatory state induced by the LPS. This study suggests that our engineered SERS surfaces can be used as a versatile tool both for the characterization of cell culture conditions and the functional state of cells over time.
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67
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Camerlingo C, Portaccio M, Tatè R, Lepore M, Delfino I. Fructose and Pectin Detection in Fruit-Based Food Products by Surface-Enhanced Raman Spectroscopy. SENSORS 2017; 17:s17040839. [PMID: 28398254 PMCID: PMC5422200 DOI: 10.3390/s17040839] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 04/07/2017] [Accepted: 04/08/2017] [Indexed: 02/04/2023]
Abstract
Surface-Enhanced Raman Spectroscopy (SERS) enables the investigation of samples with weak specific Raman signals, such as opaque samples, including fruit juices and pulp. In this paper, biological apple juices and apple/pear pulp have been studied in order to evidence the presence of fructose and pectin, which are components of great relevance for quality assessment of these kinds of products. In order to perform SERS measurements a low-cost home-made substrate consisting of a glass slide decorated with 30-nm-sized gold nanoparticles has been designed and used. By employing a conventional micro-Raman spectroscopy set-up and a suitable data treatment based on "wavelet" denoising algorithms and background subtraction, spectra of pectin and fructose with clear Raman features have been obtained. The results have confirmed the potential of SERS in the food industry for product characterization, also considering the low-cost and the relative ease of the fabrication process of the employed SERS substrate.
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Affiliation(s)
- Carlo Camerlingo
- CNR-SPIN, Istituto Superconduttori, Materiali Innovativi e Dispositivi, 80078 Pozzuoli (Na), Italy.
| | - Marianna Portaccio
- Dipartimento di Medicina Sperimentale, Università della Campania "Luigi Vanvitelli", 80138 Naples, Italy.
| | - Rosarita Tatè
- Institute of Genetics and Biophysics-ABT, CNR, 80131 Naples, Italy.
| | - Maria Lepore
- Dipartimento di Medicina Sperimentale, Università della Campania "Luigi Vanvitelli", 80138 Naples, Italy.
| | - Ines Delfino
- Dipartimento di Scienze Ecologiche e Biologiche, Università della Tuscia, 01100 Viterbo, Italy.
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Dykman LA, Khlebtsov NG. Biomedical Applications of Multifunctional Gold-Based Nanocomposites. BIOCHEMISTRY (MOSCOW) 2017; 81:1771-1789. [PMID: 28260496 DOI: 10.1134/s0006297916130125] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Active application of gold nanoparticles for various diagnostic and therapeutic purposes started in recent decades due to the emergence of new data on their unique optical and physicochemical properties. In addition to colloidal gold conjugates, growth in the number of publications devoted to the synthesis and application of multifunctional nanocomposites has occurred in recent years. This review considers the application in biomedicine of multifunctional nanoparticles that can be produced in three different ways. The first method involves design of composite nanostructures with various components intended for either diagnostic or therapeutic functions. The second approach uses new bioconjugation techniques that allow functionalization of gold nanoparticles with various molecules, thus combining diagnostic and therapeutic functions in one medical procedure. Finally, the third method for production of multifunctional nanoparticles combines the first two approaches, in which a composite nanoparticle is additionally functionalized by molecules having different properties.
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Affiliation(s)
- L A Dykman
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, Saratov, 410049, Russia
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69
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Zheng M, Zhu X, Chen Y, Xiang Q, Duan H. Three-dimensional donut-like gold nanorings with multiple hot spots for surface-enhanced raman spectroscopy. NANOTECHNOLOGY 2017; 28:045303. [PMID: 27981948 DOI: 10.1088/1361-6528/28/4/045303] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Seeking for the best possible substrates for surface-enhanced Raman spectroscopy (SERS) is of great interest for single-molecule-level detection applications. Lithographic plasmonic nanostructures are supposed to enable uniform enhancement and thus have attracted extensive interest in the past decade. In this work, we propose and demonstrate a lithographic three-dimensional (3D) donut-like gold nanoring array as a SERS substrate with an enhancement factor (EF) up to 3.84 × 107. This 3D nanoring array could be directly fabricated using electron-beam-lithography-defined templates without any additional lift-off process and thus promises ultraclean metallic surfaces. Meanwhile, the 3D configuration allows multiple hot spots for improving SERS performance compared to planar counterparts with comparable plasmon resonance position. Systematic experiments and simulations were conducted to gain understanding of the origin of the improved SERS performance. The results imply that the 3D donut-like gold nanorings with multiple hot spots can serve as a promising configuration for SERS applications.
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Affiliation(s)
- Mengjie Zheng
- School of Electronics and Physics, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, People's Republic of China
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70
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Matteini P, Cottat M, Tavanti F, Panfilova E, Scuderi M, Nicotra G, Menziani MC, Khlebtsov N, de Angelis M, Pini R. Site-Selective Surface-Enhanced Raman Detection of Proteins. ACS NANO 2017; 11:918-926. [PMID: 27960057 DOI: 10.1021/acsnano.6b07523] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Strategies for protein detection via surface-enhanced Raman spectroscopy (SERS) currently exploit the formation of randomly generated hot spots at the interfaces of metal colloidal nanoparticles, which are clustered together by intrusive chemical or physical processes in the presence of the target biomolecule. We propose a different approach based on selective and quantitative gathering of protein molecules at regular hot spots generated on the corners of individual silver nanocubes in aqueous medium at physiological pH. Here, the protein, while keeping its native configuration, experiences an intense local E-field, which boosts SERS efficiency and detection sensitivity. Uncontrolled signal fluctuations caused by variable molecular adsorption to different particle areas or inside clustered nanoparticles are circumvented. Advanced electron microscopy analyses and computational simulations outline a strategy relying on a site-selective mechanism with superior Raman signal enhancement, which offers the perspective of highly controlled and reproducible routine SERS detection of proteins.
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Affiliation(s)
- Paolo Matteini
- Institute of Applied Physics "Nello Carrara", National Research Council , via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Maximilien Cottat
- Institute of Applied Physics "Nello Carrara", National Research Council , via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Francesco Tavanti
- Department of Chemical and Geological Sciences, University of Modena e Reggio Emilia , via Campi 103, 41125 Modena, Italy
| | - Elizaveta Panfilova
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences , 13 Prospekt Entuziastov, 410049 Saratov, Russia
| | - Mario Scuderi
- Institute for Microelectronics and Microsystems, National Research Council , zona industriale strada VIII n.5, 95121 Catania, Italy
| | - Giuseppe Nicotra
- Institute for Microelectronics and Microsystems, National Research Council , zona industriale strada VIII n.5, 95121 Catania, Italy
| | - Maria Cristina Menziani
- Department of Chemical and Geological Sciences, University of Modena e Reggio Emilia , via Campi 103, 41125 Modena, Italy
| | - Nikolai Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences , 13 Prospekt Entuziastov, 410049 Saratov, Russia
- Saratov National Research State University , 83 Ulitsa Astrakhanskaya, 410012 Saratov, Russia
| | - Marella de Angelis
- Institute of Applied Physics "Nello Carrara", National Research Council , via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Roberto Pini
- Institute of Applied Physics "Nello Carrara", National Research Council , via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
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71
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Bekana D, Liu R, Amde M, Liu JF. Use of Polycrystalline Ice for Assembly of Large Area Au Nanoparticle Superstructures as SERS Substrates. ACS APPLIED MATERIALS & INTERFACES 2017; 9:513-520. [PMID: 27984854 DOI: 10.1021/acsami.6b15378] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
It is still a great challenge to develop simple and low-cost methods for preparation of surface-enhanced Raman scattering (SERS) substrates with high sensitivity and reproducibility. Taking advantage of the microstructure of polycrystalline ice, we developed a new method to assemble large area gold nanoparticle (AuNP) superstructures as SERS substrates without external templating and aggregating agent. The assembly was conducted by freezing AuNP colloid at -20 °C, which concentrated AuNPs in the ice veins and produced an AuNP superstructure upon thawing the ice. The AuNP superstructures exhibited high SERS activity with enhancement factors on the order of 7.63 × 107 owing to the high-density hot spots throughout the superstructures. The SERS activity was found to increase with particle size and aggregate size of AuNP superstructures. Besides, the substrates showed good uniformity and reproducibility with relative standard deviations of 11.9% and 12.4%, respectively. The substrates showed long-term stability, maintaining SERS activity over a period of five months without noticeable change in morphology of the superstructures. The substrates was further used for label-free detection of trace Thiram on apple fruit with high sensitivity down to the concentration of 0.28 ng/cm2, offering great potential to monitor Thiram levels in foodstuffs and environmental samples.
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Affiliation(s)
- Deribachew Bekana
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , P.O. Box 2871, Beijing 100085, China
- University of Chinese Academy of Sciences , Beijing 100049, China
| | - Rui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , P.O. Box 2871, Beijing 100085, China
| | - Meseret Amde
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , P.O. Box 2871, Beijing 100085, China
- University of Chinese Academy of Sciences , Beijing 100049, China
| | - Jing-Fu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , P.O. Box 2871, Beijing 100085, China
- University of Chinese Academy of Sciences , Beijing 100049, China
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72
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Khlebtsov B, Pylaev T, Khanadeev V, Bratashov D, Khlebtsov N. Quantitative and multiplex dot-immunoassay using gap-enhanced Raman tags. RSC Adv 2017. [DOI: 10.1039/c7ra08113h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
A highly specific, quantitative, and multiplex dot immunoassay has been developed. The immunoassay utilizes functionalized plasmonic gap-enhanced Raman tags (GERTs) as labels and nitrocellulose membrane as a substrate.
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Affiliation(s)
- Boris Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms
- Russian Academy of Sciences
- Saratov 410049
- Russia
| | - Timophey Pylaev
- Institute of Biochemistry and Physiology of Plants and Microorganisms
- Russian Academy of Sciences
- Saratov 410049
- Russia
| | - Vitaly Khanadeev
- Institute of Biochemistry and Physiology of Plants and Microorganisms
- Russian Academy of Sciences
- Saratov 410049
- Russia
| | | | - Nikolai Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms
- Russian Academy of Sciences
- Saratov 410049
- Russia
- National Research Saratov State University
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73
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Review of surface enhanced Raman spectroscopic (SERS) detection of synthetic chemical pesticides. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.06.017] [Citation(s) in RCA: 266] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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74
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Liu Z, Wang Y, Deng R, Yang L, Yu S, Xu S, Xu W. Fe3O4@Graphene Oxide@Ag Particles for Surface Magnet Solid-Phase Extraction Surface-Enhanced Raman Scattering (SMSPE-SERS): From Sample Pretreatment to Detection All-in-One. ACS APPLIED MATERIALS & INTERFACES 2016; 8:14160-14168. [PMID: 27191584 DOI: 10.1021/acsami.6b02944] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A multifunctional magnetic graphene surface-enhanced Raman scattering (SERS) substrate was fabricated successfully by the layer-by-layer assembly of silver and graphene oxide (GO) nanoparticles (NPs) on the magnetic ferroferric oxide particles (Fe3O4@GO@Ag). This ternary particle possesses magnetic properties, SERS activity, and adsorption ability simultaneously. Owing to the multifunction of this Fe3O4@GO@Ag ternary complex, we put forward a new method called a surface magnetic solid-phase extraction (SMSPE) technique, for the SERS detections of pesticide residues on the fruit peels. SMSPE integrates many sample pretreatment procedures, such as surface extraction, separation sample, and detection, all-in-one. So this method shows great superiority in simplicity, rapidity, and high efficiency above other standard methods. The whole detection process can be finished within 20 min including the sample pretreatment and SERS detection. Owing to the high density of Ag NPs, the detection sensitivity is high enough that the lowest detectable concentrations are 0.48 and 40 ng/cm(2) for thiram and thiabendazole, which are much lower than the maximal residue limits in fruit prescribed by the U.S. Environmental Protection Agency. This multifunctional ternary particle and its corresponding analytical method have been proven to be applicable for practical samples and also valuable for other surface analysis.
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Affiliation(s)
- Zhigang Liu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University , 2699 Qianjin Avenue, Changchun 130012 China
- Centre of Analysis and Measurement, Jilin Institute of Chemical Technology , Jilin 132022 China
| | - Yi Wang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University , 2699 Qianjin Avenue, Changchun 130012 China
| | - Rong Deng
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University , 2699 Qianjin Avenue, Changchun 130012 China
| | - Liyuan Yang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University , 2699 Qianjin Avenue, Changchun 130012 China
| | - Shihua Yu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University , 2699 Qianjin Avenue, Changchun 130012 China
- Centre of Analysis and Measurement, Jilin Institute of Chemical Technology , Jilin 132022 China
| | - Shuping Xu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University , 2699 Qianjin Avenue, Changchun 130012 China
| | - Weiqing Xu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University , 2699 Qianjin Avenue, Changchun 130012 China
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75
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Giordano MC, Foti A, Messina E, Gucciardi PG, Comoretto D, Buatier de Mongeot F. SERS Amplification from Self-Organized Arrays of Plasmonic Nanocrescents. ACS APPLIED MATERIALS & INTERFACES 2016; 8:6629-38. [PMID: 26824254 DOI: 10.1021/acsami.5b11843] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We report on the surface-enhanced Raman scattering (SERS) efficiency of self-organized arrays of Au nanocrescents confined on monolayers of polystyrene nanospheres. A dichroic SERS emission in the visible spectrum is observed due to the selective excitation of a localized surface plasmon (LSP) resonance along the "short axis" of the Au nanocrescents. Under these conditions SERS signal amplifications in the range of 10(3) have been observed with respect to a flat reference Au film. The far field and near field plasmonic response of Au nanocrescent arrays have been investigated as a function of the metal dose deposited onto the polymeric spheres. In this way, we show the possibility of simply tailoring the SERS emission by engineering the morphology of the plasmonic nanocrescents. We highlight the SERS activity of chains of satellite nanoclusters that decorate the border of each connected crescent and sustain isotropic high energy LSP resonances in the visible spectrum.
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Affiliation(s)
| | - Antonino Foti
- CNR IPCF Institute for Chemical and Physical processes , Viale F. Stagno D'Alcontres 37, I-98156 Messina, Italy
- School of Doctorate in Physics, University of Messina , Viale F. Stagno D'Alcontres 31, I-98156 Messina, Italy
| | - Elena Messina
- CNR IPCF Institute for Chemical and Physical processes , Viale F. Stagno D'Alcontres 37, I-98156 Messina, Italy
| | - Pietro Giuseppe Gucciardi
- CNR IPCF Institute for Chemical and Physical processes , Viale F. Stagno D'Alcontres 37, I-98156 Messina, Italy
| | - Davide Comoretto
- Department of Chemistry and Industrial Chemistry, University of Genova Via Dodecaneso 31, 16146, Genova, Italy
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76
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Banchelli M, Tiribilli B, Pini R, Dei L, Matteini P, Caminati G. Controlled graphene oxide assembly on silver nanocube monolayers for SERS detection: dependence on nanocube packing procedure. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2016; 7:9-21. [PMID: 26925348 PMCID: PMC4734306 DOI: 10.3762/bjnano.7.2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 12/21/2015] [Indexed: 05/03/2023]
Abstract
Hybrid graphene oxide/silver nanocubes (GO/AgNCs) arrays for surface-enhanced Raman spectroscopy (SERS) applications were prepared by means of two procedures differing for the method used in the assembly of the silver nanocubes onto the surface: Langmuir-Blodgett (LB) transfer and direct sequential physisorption of silver nanocubes (AgNCs). Adsorption of graphene oxide (GO) flakes on the AgNC assemblies obtained with both procedures was monitored by quartz crystal microbalance (QCM) technique as a function of GO bulk concentration. The experiment provided values of the adsorbed GO mass on the AgNC array and the GO saturation limit as well as the thickness and the viscoelastic properties of the GO film. Atomic force microscopy (AFM) measurements of the resulting samples revealed that a similar surface coverage was achieved with both procedures but with a different distribution of silver nanoparticles. In the GO covered LB film, the AgNC distribution is characterized by densely packed regions alternating with empty surface areas. On the other hand, AgNCs are more homogeneously dispersed over the entire sensor surface when the nanocubes spontaneously adsorb from solution. In this case, the assembly results in less-packed silver nanostructures with higher inter-cube distance. For the two assembled substrates, AFM of silver nanocubes layers fully covered with GO revealed the presence of a homogeneous, flexible and smooth GO sheet folding over the silver nanocubes and extending onto the bare surface. Preliminary SERS experiments on adenine showed a higher SERS enhancement factor for GO on Langmuir-Blodgett films of AgNCs with respect to bare AgNC systems. Conversely, poor SERS enhancement for adenine resulted for GO-covered AgNCs obtained by spontaneous adsorption. This indicated that the assembly and packing of AgNCs obtained in this way, although more homogeneous over the substrate surface, is not as effective for SERS analysis.
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Affiliation(s)
- Martina Banchelli
- Institute of Applied Physics, National Research Council - Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
| | - Bruno Tiribilli
- Institute for Complex Systems, National Research Council, Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
| | - Roberto Pini
- Institute of Applied Physics, National Research Council - Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
| | - Luigi Dei
- Department of Chemistry and CSGI, University of Florence, Via della Lastruccia 3–13, I-50019 Sesto Fiorentino, Italy
| | - Paolo Matteini
- Institute of Applied Physics, National Research Council - Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
| | - Gabriella Caminati
- Department of Chemistry and CSGI, University of Florence, Via della Lastruccia 3–13, I-50019 Sesto Fiorentino, Italy
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77
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Gao M, Fang W, Ren J, Shen A, Hu J. Reliable SERS detection of nitrite based on pH and laser irradiance-dependent diazotization through a convenient sampling micro-chamber. Analyst 2016; 141:5195-201. [DOI: 10.1039/c6an00880a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A SERS-enabled micro-chamber was constructed for reliable and pretreatment-free detection of NO2−based on a pH and laser irradiance-dependent diazotization.
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Affiliation(s)
- Mengyue Gao
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
| | - Wei Fang
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
| | - Jiaqiang Ren
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
| | - Aiguo Shen
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
| | - Jiming Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
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78
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Lengert E, Yashchenok AM, Atkin V, Lapanje A, Gorin DA, Sukhorukov GB, Parakhonskiy BV. Hollow silver alginate microspheres for drug delivery and surface enhanced Raman scattering detection. RSC Adv 2016. [DOI: 10.1039/c6ra02019d] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Multifunctional silver alginate hydrogel microspheres are assembled via a template assisted approach using calcium carbonate cores.
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Affiliation(s)
- Ekaterina Lengert
- Remote Controlled Theranostic Systems Lab
- Institute of Nanostructures and Biosystem
- Saratov State University
- Saratov
- Russia
| | - Alexey M. Yashchenok
- Remote Controlled Theranostic Systems Lab
- Institute of Nanostructures and Biosystem
- Saratov State University
- Saratov
- Russia
| | - Vsevolod Atkin
- Remote Controlled Theranostic Systems Lab
- Institute of Nanostructures and Biosystem
- Saratov State University
- Saratov
- Russia
| | - Ales Lapanje
- Remote Controlled Theranostic Systems Lab
- Institute of Nanostructures and Biosystem
- Saratov State University
- Saratov
- Russia
| | - Dmitry A. Gorin
- Remote Controlled Theranostic Systems Lab
- Institute of Nanostructures and Biosystem
- Saratov State University
- Saratov
- Russia
| | - Gleb B. Sukhorukov
- School of Engineering and Materials Science
- Queen Mary University of London
- London
- UK
| | - Bogdan V. Parakhonskiy
- Remote Controlled Theranostic Systems Lab
- Institute of Nanostructures and Biosystem
- Saratov State University
- Saratov
- Russia
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79
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Prikhozhdenko ES, Atkin VS, Parakhonskiy BV, Rybkin IA, Lapanje A, Sukhorukov GB, Gorin DA, Yashchenok AM. New post-processing method of preparing nanofibrous SERS substrates with a high density of silver nanoparticles. RSC Adv 2016. [DOI: 10.1039/c6ra18636j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The protocol to control density of AgNP on surfaces of nanofibers, and thus electromagnetic hotspots by variation of Tollens' reagent is established. Nanofiber films enable SERS either of solutes or macromolecular structures such as bacterial cells.
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Affiliation(s)
- E. S. Prikhozhdenko
- Remote Controlled Theranostic Systems Lab
- Educational Research Institute of Nanostructures and Biosystem
- Saratov State University
- Saratov
- Russia
| | - V. S. Atkin
- Educational Research Institute of Nanostructures and Biosystem
- Saratov State University
- Saratov
- Russia
| | - B. V. Parakhonskiy
- Remote Controlled Theranostic Systems Lab
- Educational Research Institute of Nanostructures and Biosystem
- Saratov State University
- Saratov
- Russia
| | - I. A. Rybkin
- Remote Controlled Theranostic Systems Lab
- Educational Research Institute of Nanostructures and Biosystem
- Saratov State University
- Saratov
- Russia
| | - A. Lapanje
- Remote Controlled Theranostic Systems Lab
- Educational Research Institute of Nanostructures and Biosystem
- Saratov State University
- Saratov
- Russia
| | - G. B. Sukhorukov
- School of Engineering and Materials Science
- Queen Mary University of London
- London
- UK
- RASA Center in St. Petersburg
| | - D. A. Gorin
- Remote Controlled Theranostic Systems Lab
- Educational Research Institute of Nanostructures and Biosystem
- Saratov State University
- Saratov
- Russia
| | - A. M. Yashchenok
- Remote Controlled Theranostic Systems Lab
- Educational Research Institute of Nanostructures and Biosystem
- Saratov State University
- Saratov
- Russia
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80
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Powell JA, Venkatakrishnan K, Tan B. Hybridized enhancement of the SERS detection of chemical and bio-marker molecules through Au nanosphere ornamentation of hybrid amorphous/crystalline Si nanoweb nanostructure biochip devices. J Mater Chem B 2016; 4:5713-5728. [DOI: 10.1039/c6tb01301e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We report the fabrication of hybrid Si SERS nanobiosensor biochip devices.
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Affiliation(s)
- Jeffery Alexander Powell
- Ultrashort Laser Nanomanufacturing Research Facility
- Department of Mechanical and Industrial Engineering
- Ryerson University
- Toronto
- Canada, M5B 2K3
| | - Krishnan Venkatakrishnan
- Ultrashort Laser Nanomanufacturing Research Facility
- Department of Mechanical and Industrial Engineering
- Ryerson University
- Toronto
- Canada, M5B 2K3
| | - Bo Tan
- Nano-imaging Lab
- Department of Aerospace Engineering
- Ryerson University
- Toronto
- Canada, M5B 2K3
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81
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Valadbeigi Y, Ilbeigi V, Farrokhpour H. Ionization energies, electron affinities, and binding energies of Li-doped gold nanoclusters. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2331-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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82
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Planar monolithic porous polymer layers functionalized with gold nanoparticles as large-area substrates for sensitive surface-enhanced Raman scattering sensing of bacteria. Anal Chim Acta 2015; 896:111-9. [DOI: 10.1016/j.aca.2015.09.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 09/09/2015] [Accepted: 09/14/2015] [Indexed: 12/14/2022]
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83
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Severyukhina AN, Parakhonskiy BV, Prikhozhdenko ES, Gorin DA, Sukhorukov GB, Möhwald H, Yashchenok AM. Nanoplasmonic chitosan nanofibers as effective SERS substrate for detection of small molecules. ACS APPLIED MATERIALS & INTERFACES 2015; 7:15466-15473. [PMID: 26126080 DOI: 10.1021/acsami.5b03696] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The use of surface enhanced Raman spectroscopy (SERS) is limited by low reproducibility and uniformity of the response. Solving these problems can turn the laboratory use of SERS into real-world application. In this regard, soft SERS-active substrates can enable portable instrumentation and reduce costs in the fabrication of SERS-based sensors. Here, plasmonic free-standing films made of biocompatible chitosan nanofibers and gold nanoparticles are engineered by a simple protocol varying the concentration of chloroauric acid. The concentration and distribution of gold nanoparticles in films are controlled in a predictable way, and SERS spectra for the standard 2-naphthalenethiol with concentration less than 10(-15) M are acquired in a reproducible way. The statistical analysis reveals a relatively high and locally uniform performance of SERS with an enhancement factor of 2 × 10(5) for 86% of the points on the imaged area of the SERS substrate. Potential SERS detection of small molecules, both Rhodamine 6G and d-Glucose, in the micromolar range is demonstrated.
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Affiliation(s)
- Alexandra N Severyukhina
- †Remote Controlled Theranostic Systems Lab, Institute of Nanostructures and Biosystem, Saratov State University, Saratov, 410012 Russia
| | - Bogdan V Parakhonskiy
- †Remote Controlled Theranostic Systems Lab, Institute of Nanostructures and Biosystem, Saratov State University, Saratov, 410012 Russia
- ‡A.V. Shubnikov Institute of Crystallography RAS, Moscow, 119333 Russia
| | - Ekaterina S Prikhozhdenko
- †Remote Controlled Theranostic Systems Lab, Institute of Nanostructures and Biosystem, Saratov State University, Saratov, 410012 Russia
| | - Dmitry A Gorin
- †Remote Controlled Theranostic Systems Lab, Institute of Nanostructures and Biosystem, Saratov State University, Saratov, 410012 Russia
| | - Gleb B Sukhorukov
- §School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London, E1 4NS, U.K
| | - Helmuth Möhwald
- ∥Max-Planck Institute for Colloids and Interfaces, Potsdam, 14424 Germany
| | - Alexey M Yashchenok
- †Remote Controlled Theranostic Systems Lab, Institute of Nanostructures and Biosystem, Saratov State University, Saratov, 410012 Russia
- ∥Max-Planck Institute for Colloids and Interfaces, Potsdam, 14424 Germany
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