201
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Wang Y, Wang H, Wang Y, Shen Y, Xu S, Xu W. Plasmon-Driven Dynamic Response of a Hierarchically Structural Silver-Decorated Nanorod Array for Sub-10 nm Nanogaps. ACS APPLIED MATERIALS & INTERFACES 2016; 8:15623-15629. [PMID: 27250862 DOI: 10.1021/acsami.6b04173] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Plasmonic nanogaps serve as a useful configuration for light concentration and local field amplification owing to the extreme localization of surface plasmons. Here, a smart plasmonic nanogap device is fabricated by the dynamic response of an Ag decorated hierarchically structural vertical polymer nanorod array under the light irradiation. Seven nanorods in one unit bend because of plasmonic heating effect and they are centrally collected due to the attraction of the plasmon-induced polaritons, leading to the significantly enhanced local electromagnetic field at the sub-10 nm gaps among the constricted nanorod tops. Compared with tuning capillarity in microscale by wetting and drying, using light as external stimuli is much easier and more tunable in nanoscale. This plasmonic nanogap device is used for a surface-enhanced Raman scattering (SERS) substrate. Its hydrophobic surface with a contact angle of 142 degree can make the probed aqueous solution only access to the Ag tips of nanorods. Thus, the analytes can be driven to the "hot spot" regions where located at the tops of nanorods during the solvent evaporation process, which is beneficial to SERS detection. Discovery of this smart plasmon-driven process broadens the scope for further functionality of both the dynamic nanostructure design and the smart plasmonic devices in the communities of chemistry, biomedicine, and microfluidic engineering.
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Affiliation(s)
- Yi Wang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University , Changchun, Jilin, China
| | - Hailong Wang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University , Changchun, Jilin, China
| | - Yuyang Wang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University , Changchun, Jilin, China
| | - Yanting Shen
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University , Changchun, Jilin, China
| | - Shuping Xu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University , Changchun, Jilin, China
| | - Weiqing Xu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University , Changchun, Jilin, China
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202
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Abstract
In this review, we survey recent advances in the field of molecular plasmonics beyond the traditional sensing modality. Molecular plasmonics is explored in the context of the complex interaction between plasmon resonances and molecules and the ability of molecules to support plasmons self-consistently. First, spectroscopic changes induced by the interaction between molecular and plasmonic resonances are discussed, followed by examples of how tuning molecular properties leads to active molecular plasmonic systems. Next, the role of the position and polarizability of a molecular adsorbate on surface-enhanced Raman scattering signals is examined experimentally and theoretically. Finally, we introduce recent research focused on using molecules as plasmonic materials. Each of these examples is intended to highlight the role of molecules as integral components in coupled molecule-plasmon systems, as well as to show the diversity of applications in molecular plasmonics.
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Affiliation(s)
- Andrew J Wilson
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122;
| | - Katherine A Willets
- Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122;
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203
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Ji X, Yang W. Study of chemical processes involved in silver staining of gold nanostructures by Raman scattering. NANOSCALE 2016; 8:9583-9591. [PMID: 27103376 DOI: 10.1039/c6nr01208f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Strong Raman enhancement contributed by "hot spots" in directly fused gold dimers offer a selective and sensitive tool for understanding the surface processes involved in the silver staining of gold nanostructures. These processes include the interactions of cations, effects of surface adsorbed Cl(-) ions, surface replacement of ligands, and reduction of silver ions on the surface of the gold nanocrystals. Results show that in the commonly applied silver staining scheme for gold nanostructures, i.e., the addition of the Raman probe after the deposition of the silver shell, the Raman signals of the probe (p-mercaptobenzoic acid) were weakened greatly, due to the pre-existence of the Cl(-)-Ag(+)-citrate bridges on the surface of the gold. A new scheme was developed for silver deposition after pre-adsorption of the probe, which achieved a Raman enhancement factor as high as ∼5 × 10(8).
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Affiliation(s)
- Xiaohui Ji
- State Key Laboratory for Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China.
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204
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Bi X, Li X, Chen D, Du X. Sensitive Glycoprotein Sandwich Assays by the Synergistic Effect of In Situ Generation of Raman Probes and Plasmonic Coupling of Ag Core-Au Satellite Nanostructures. ACS APPLIED MATERIALS & INTERFACES 2016; 8:10683-10689. [PMID: 27064515 DOI: 10.1021/acsami.6b00450] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Sensitive surface-enhanced Raman scattering (SERS) assays of glycoproteins have been proposed using p-aminothiophenol (PATP)-embedded Ag core-Au satellite nanostructures modified with p-mercaptophenylboronic acid (PMBA) and the self-assembled monolayer of PMBA on a smooth gold-coated wafer. The apparent Raman probe PATP on the surfaces of the Ag cores underwent a photodimerization to generate 4,4'-dimercaptoazobenzene (DMAB) in situ upon excitation of laser, and the in situ generated DMAB acted as the actual Raman probe with considerably strong SERS signals, which was further enhanced by the plasmonic coupling of the Ag core-Au satellite nanostructures due to the synergistic effect. The sandwich assays of glycoproteins showed high sensitivity and excellent selectivity against nonglycoproteins. The Ag core-Au satellite SERS nanostructures can be used for highly sensitive SERS assays of other analytes.
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Affiliation(s)
- Xiaoshuang Bi
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, and School of Chemistry and Chemical Engineering, Nanjing University , Nanjing, Jiangsu 210023, People's Republic of China
| | - Xueyuan Li
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, and School of Chemistry and Chemical Engineering, Nanjing University , Nanjing, Jiangsu 210023, People's Republic of China
| | - Dong Chen
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, and School of Chemistry and Chemical Engineering, Nanjing University , Nanjing, Jiangsu 210023, People's Republic of China
| | - Xuezhong Du
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, and School of Chemistry and Chemical Engineering, Nanjing University , Nanjing, Jiangsu 210023, People's Republic of China
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205
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Kamińska A, Witkowska E, Kowalska A, Skoczyńska A, Gawryszewska I, Guziewicz E, Snigurenko D, Waluk J. Highly efficient SERS-based detection of cerebrospinal fluid neopterin as a diagnostic marker of bacterial infection. Anal Bioanal Chem 2016; 408:4319-27. [PMID: 27086021 PMCID: PMC4875960 DOI: 10.1007/s00216-016-9535-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Revised: 02/26/2016] [Accepted: 03/30/2016] [Indexed: 11/29/2022]
Abstract
A highly efficient recognition unit based on surface-enhanced Raman spectroscopy (SERS) was developed as a promising, fast, and sensitive tool for detection of meningococcal meningitis, which is an extremely serious and often fatal disease of the nervous system (an inflammation of the lining around the brain and spinal cord). The results of this study confirmed that there were specific differences in SERS spectra between cerebrospinal fluid (CSF) samples infected by Neisseria meningitidis and the normal CSF, suggesting a potential role for neopterin in meningococcal meningitis detection and screening applications. To estimate the best performance of neopterin as a marker of bacterial infection, principal component analysis (PCA) was performed in a selected region (640–720 cm−1) where the most prominent SERS peak at 695 cm−1 arising from neopterin was observed. The calculated specificity of 95 % and sensitivity of 98 % clearly indicate the effective diagnostic efficiency for differentiation between infected and control samples. Additionally, the limit of detection (LOD) of neopterin in CSF clinical samples was estimated. The level of neopterin was significantly higher in CSF samples infected by N. meningitidis (48 nmol/L), compared to the normal (control) group (4.3 nmol/L). Additionally, this work presents a new type of SERS-active nanostructure, based on polymer mats, that allows simultaneous filtration, immobilization, and enhancement of the Raman signal, enabling detection of spectra from single bacterial cells of N. meningitidis present in CSF samples. This provides a new possibility for fast and easy detection of bacteria in CSF and other clinical body fluids on a time scale of seconds. This method of detection produces consistent results faster and cheaper than traditional laboratory techniques, demonstrates the powerful potential of SERS for detection of disease, and shows the viability of future development in healthcare applications.
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Affiliation(s)
- Agnieszka Kamińska
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland.
| | - Evelin Witkowska
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Aneta Kowalska
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Anna Skoczyńska
- National Medicines Institute, Chełmska 30/34, 00-725, Warsaw, Poland
| | | | - Elżbieta Guziewicz
- Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668, Warsaw, Poland
| | - Dymitr Snigurenko
- Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668, Warsaw, Poland
| | - Jacek Waluk
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland.,Faculty of Mathematics and Natural Sciences, College of Science, Cardinal Stefan Wyszyński University, Dewajtis 5, 01-815, Warsaw, Poland
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206
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Zhang J, Winget SA, Wu Y, Su D, Sun X, Xie ZX, Qin D. Ag@Au Concave Cuboctahedra: A Unique Probe for Monitoring Au-Catalyzed Reduction and Oxidation Reactions by Surface-Enhanced Raman Spectroscopy. ACS NANO 2016; 10:2607-16. [PMID: 26812215 DOI: 10.1021/acsnano.5b07665] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
We report a facile synthesis of Ag@Au concave cuboctahedra by titrating aqueous HAuCl4 into a suspension of Ag cuboctahedra in the presence of ascorbic acid (AA), NaOH, and poly(vinylpyrrolidone) (PVP) at room temperature. Initially, the Au atoms derived from the reduction of Au(3+) by AA are conformally deposited on the entire surface of a Ag cuboctahedron. Upon the formation of a complete Au shell, however, the subsequently formed Au atoms are preferentially deposited onto the Au{100} facets, resulting in the formation of a Ag@Au cuboctahedron with concave structures at the sites of {111} facets. The concave cuboctahedra embrace excellent SERS activity that is more than 70-fold stronger than that of the original Ag cuboctahedra at an excitation wavelength of 785 nm. The concave cuboctahedra also exhibit remarkable stability in the presence of an oxidant such as H2O2 because of the protection by a complete Au shell. These two unique attributes enable in situ SERS monitoring of the reduction of 4-nitrothiophenol (4-NTP) to 4-aminothiophenol (4-ATP) by NaBH4 through a 4,4'-dimercaptoazobenzene (trans-DMAB) intermediate and the subsequent oxidation of 4-ATP back to trans-DMAB upon the introduction of H2O2.
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Affiliation(s)
- Jiawei Zhang
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, Xiamen University , Xiamen, Fujian 361005, PR China
| | - Sarah A Winget
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
- Department of Chemistry, Agnes Scott College , 141 E College Avenue, Decatur, Georgia 30030, United States
| | - Yiren Wu
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Dong Su
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Xiaojun Sun
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Zhao-Xiong Xie
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, Xiamen University , Xiamen, Fujian 361005, PR China
| | - Dong Qin
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
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207
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Gruenke NL, Cardinal MF, McAnally MO, Frontiera RR, Schatz GC, Van Duyne RP. Ultrafast and nonlinear surface-enhanced Raman spectroscopy. Chem Soc Rev 2016; 45:2263-90. [PMID: 26848784 DOI: 10.1039/c5cs00763a] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Ultrafast surface-enhanced Raman spectroscopy (SERS) has the potential to study molecular dynamics near plasmonic surfaces to better understand plasmon-mediated chemical reactions such as plasmonically-enhanced photocatalytic or photovoltaic processes. This review discusses the combination of ultrafast Raman spectroscopic techniques with plasmonic substrates for high temporal resolution, high sensitivity, and high spatial resolution vibrational spectroscopy. First, we introduce background information relevant to ultrafast SERS: the mechanisms of surface enhancement in Raman scattering, the characterization of plasmonic materials with ultrafast techniques, and early complementary techniques to study molecule-plasmon interactions. We then discuss recent advances in surface-enhanced Raman spectroscopies with ultrafast pulses with a focus on the study of molecule-plasmon coupling and molecular dynamics with high sensitivity. We also highlight the challenges faced by this field by the potential damage caused by concentrated, highly energetic pulsed fields in plasmonic hotspots, and finally the potential for future ultrafast SERS studies.
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Affiliation(s)
- Natalie L Gruenke
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA.
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208
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Sevinc PC, Dhital B, Govind Rao V, Wang Y, Lu HP. Probing Electric Field Effect on Covalent Interactions at a Molecule–Semiconductor Interface. J Am Chem Soc 2016; 138:1536-42. [PMID: 26735967 DOI: 10.1021/jacs.5b10253] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Papatya C. Sevinc
- Department of Chemistry and
Center for Photochemical Sciences, Bowling Green State University, Bowling
Green, Ohio 43403, United States
| | - Bharat Dhital
- Department of Chemistry and
Center for Photochemical Sciences, Bowling Green State University, Bowling
Green, Ohio 43403, United States
| | - Vishal Govind Rao
- Department of Chemistry and
Center for Photochemical Sciences, Bowling Green State University, Bowling
Green, Ohio 43403, United States
| | - Yuanmin Wang
- Department of Chemistry and
Center for Photochemical Sciences, Bowling Green State University, Bowling
Green, Ohio 43403, United States
| | - H. Peter Lu
- Department of Chemistry and
Center for Photochemical Sciences, Bowling Green State University, Bowling
Green, Ohio 43403, United States
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209
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Sharma V, Sinha N, Dutt S, Chawla M, Siril PF. Tuning the surface enhanced Raman scattering and catalytic activities of gold nanorods by controlled coating of platinum. J Colloid Interface Sci 2016; 463:180-7. [DOI: 10.1016/j.jcis.2015.10.036] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 09/09/2015] [Accepted: 10/14/2015] [Indexed: 10/22/2022]
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210
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Roelli P, Galland C, Piro N, Kippenberg TJ. Molecular cavity optomechanics as a theory of plasmon-enhanced Raman scattering. NATURE NANOTECHNOLOGY 2016; 11:164-169. [PMID: 26595330 DOI: 10.1038/nnano.2015.264] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Accepted: 10/09/2015] [Indexed: 06/05/2023]
Abstract
The exceptional enhancement of Raman scattering by localized plasmonic resonances in the near field of metallic nanoparticles, surfaces or tips (SERS, TERS) has enabled spectroscopic fingerprinting down to the single molecule level. The conventional explanation attributes the enhancement to the subwavelength confinement of the electromagnetic field near nanoantennas. Here, we introduce a new model that also accounts for the dynamical nature of the plasmon-molecule interaction. We thereby reveal an enhancement mechanism not considered before: dynamical backaction amplification of molecular vibrations. We first map the system onto the canonical Hamiltonian of cavity optomechanics, in which the molecular vibration and the plasmon are parametrically coupled. We express the vacuum optomechanical coupling rate for individual molecules in plasmonic 'hot-spots' in terms of the vibrational mode's Raman activity and find it to be orders of magnitude larger than for microfabricated optomechanical systems. Remarkably, the frequency of commonly studied molecular vibrations can be comparable to or larger than the plasmon's decay rate. Together, these considerations predict that an excitation laser blue-detuned from the plasmon resonance can parametrically amplify the molecular vibration, leading to a nonlinear enhancement of Raman emission that is not predicted by the conventional theory. Our optomechanical approach recovers known results, provides a quantitative framework for the calculation of cross-sections, and enables the design of novel systems that leverage dynamical backaction to achieve additional, mode-selective enhancements. It also provides a quantum mechanical framework to analyse plasmon-vibrational interactions in terms of molecular quantum optomechanics.
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Affiliation(s)
- Philippe Roelli
- Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
| | - Christophe Galland
- Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
| | - Nicolas Piro
- Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
| | - Tobias J Kippenberg
- Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland
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211
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Hu C, Shen J, Yan J, Zhong J, Qin W, Liu R, Aldalbahi A, Zuo X, Song S, Fan C, He D. Highly narrow nanogap-containing Au@Au core-shell SERS nanoparticles: size-dependent Raman enhancement and applications in cancer cell imaging. NANOSCALE 2016; 8:2090-6. [PMID: 26701141 DOI: 10.1039/c5nr06919j] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Cellular imaging technologies employing metallic surface-enhanced Raman scattering (SERS) tags have gained much interest toward clinical diagnostics, but they are still suffering from poor controlled distribution of hot spots and reproducibility of SERS signals. Here, we report the fabrication and characterization of high narrow nanogap-containing Au@Au core-shell SERS nanoparticles (GCNPs) for the identification and imaging of proteins overexpressed on the surface of cancer cells. First, plasmonic nanostructures are made of gold nanoparticles (∼15 nm) coated with gold shells, between which a highly narrow and uniform nanogap (∼1.1 nm) is formed owing to polyA anchored on the Au cores. The well controlled distribution of Raman reporter molecules, such as 4,4'-dipyridyl (44DP) and 5,5'-dithiobis(2-nitrobenzoic acid) (DTNB), are readily encoded in the nanogap and can generate strong, reproducible SERS signals. In addition, we have investigated the size-dependent SERS activity of GCNPs and found that with the same laser wavelength, the Raman enhancement discriminated between particle sizes. The maximum Raman enhancement was achieved at a certain threshold of particle size (∼76 nm). High narrow nanogap-containing Au@Au core-shell SERS tags (GCTs) were prepared via the functionalization of hyaluronic acid (HA) on GCNPs, which recognized the CD44 receptor, a tumor-associated surface biomarker. And it was shown that GCTs have a good targeting ability to tumour cells and promising prospects for multiplex biomarker detection.
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Affiliation(s)
- Chongya Hu
- School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Jianlei Shen
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Juan Yan
- National Engineering Research Center for Nanotechnology, Shanghai 200241, China. and Shanghai Ocean University, Shanghai 201306, China
| | - Jian Zhong
- National Engineering Research Center for Nanotechnology, Shanghai 200241, China. and Shanghai Ocean University, Shanghai 201306, China
| | - Weiwei Qin
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Rui Liu
- National Engineering Research Center for Nanotechnology, Shanghai 200241, China.
| | - Ali Aldalbahi
- Chemistry Department, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Xiaolei Zuo
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Shiping Song
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Chunhai Fan
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Dannong He
- School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. and National Engineering Research Center for Nanotechnology, Shanghai 200241, China.
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212
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Zhang X, Du X. Carbon Nanodot-Decorated Ag@SiO2 Nanoparticles for Fluorescence and Surface-Enhanced Raman Scattering Immunoassays. ACS APPLIED MATERIALS & INTERFACES 2016; 8:1033-40. [PMID: 26692186 DOI: 10.1021/acsami.5b11446] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
A novel immunoassay protocol was demonstrated by the combination of fluorescent carbon nanodots (CNDs) and Ag@SiO2 surface-enhanced Raman scattering (SERS) tag nanoparticles into ensembles for a bifunctional nanoplatform. The CND-decorated Ag@SiO2 nanoparticles were constructed for sensitive fluorescence and SERS immunoassays. The silica shell thickness and amount of Ag@SiO2 nanoparticles were optimized for availability of strong fluorescence emission. The considerably large Raman scattering cross section of in situ-generated actual Raman reporter, 4,4'-dimercaptoazobenzene, from the apparent reporter p-aminothiophenol modified on the surfaces of Ag nanoparticles upon illumination of laser compensated for the reduction of SERS signals resulting from silica coating to a great degree. The antibody-modified bifunctional nanoparticles were captured by antibody-modified quartz slides in the presence of antigens in the sandwich structures for fluorescence and SERS immunoassays. The bifunctional nanoparticles could be used not only as bimodal probes for biodetection but also as bimodal tracers for bioimaging.
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Affiliation(s)
- Xianfeng Zhang
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, and School of Chemistry and Chemical Engineering, Nanjing University , Nanjing, Jiangsu 210023, P. R. China
- Department of Applied Chemistry and Environmental Engineering, Bengbu College , Bengbu, Anhui 233030, P. R. China
| | - Xuezhong Du
- Key Laboratory of Mesoscopic Chemistry (Ministry of Education), State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, and School of Chemistry and Chemical Engineering, Nanjing University , Nanjing, Jiangsu 210023, P. R. China
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213
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Israelsen ND, Wooley D, Hanson C, Vargis E. Rational design of Raman-labeled nanoparticles for a dual-modality, light scattering immunoassay on a polystyrene substrate. J Biol Eng 2016; 10:2. [PMID: 26751120 PMCID: PMC4705623 DOI: 10.1186/s13036-015-0023-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 12/29/2015] [Indexed: 12/17/2022] Open
Abstract
Background Surface-enhanced Raman scattering (SERS) is a powerful light scattering technique that can be used for sensitive immunoassay development and cell labeling. A major obstacle to using SERS is the complexity of fabricating SERS probes since they require nanoscale characterization and optical uniformity. The light scattering response of SERS probes may also be modulated by the substrate used for SERS analysis. A typical SERS substrate such as quartz can be expensive. Polystyrene is a cheaper substrate option but can decrease the SERS response due to interfering Raman emission peaks and high background fluorescence. The goal of this research is to develop an optimized process for fabricating Raman-labeled nanoparticles for a SERS-based immunoassay on a polystyrene substrate. Results We have developed a method for fabricating SERS nanoparticle probes for use in a light scattering immunoassay on a polystyrene substrate. The light scattering profile of both spherical gold nanoparticle and gold nanorod SERS probes were characterized using Raman spectroscopy and optical absorbance spectroscopy. The effects of substrate interference and autofluorescence were reduced by selecting a Raman reporter with a strong light scattering response in a spectral region where interfering substrate emission peaks are minimized. Both spherical gold nanoparticles and gold nanorods SERS probes used in the immunoassay were detected at labeling concentrations in the low pM range. This analytical sensitivity falls within the typical dynamic range for direct labeling of cell-surface biomarkers using SERS probes. Conclusion SERS nanoparticle probes were fabricated to produce a strong light scattering signal despite substrate interference. The optical extinction and inelastic light scattering of these probes was detected by optical absorbance spectroscopy and Raman spectroscopy, respectively. This immunoassay demonstrates the feasibility of analyzing strongly enhanced Raman signals on polystyrene, which is an inexpensive yet non-ideal Raman substrate. The assay sensitivity, which is in the low pM range, suggests that these SERS probe particles could be used for Raman labeling of cell or tissue samples in a polystyrene tissue culture plate. With continued development, this approach could be used for direct labeling of multiple cell surface biomarkers on strongly interfering substrate platforms. Electronic supplementary material The online version of this article (doi:10.1186/s13036-015-0023-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nathan D Israelsen
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322 USA
| | - Donald Wooley
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322 USA
| | - Cynthia Hanson
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322 USA
| | - Elizabeth Vargis
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322 USA
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214
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Pan X, Dong J, Li Y, Sun X, Yuan C, Qian W. The strategy of two-scale interface enrichment for constructing ultrasensitive SERS substrates based on the coffee ring effect of AgNP@β-CD. RSC Adv 2016. [DOI: 10.1039/c6ra01101b] [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] Open
Abstract
Herein we introduced a Raman technique for the detection of aromatic compounds. The combination of the pre-concentration of β-CD and the SERS effect of the coffee-ring enhanced the detection ability of SERS to aromatic compounds.
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Affiliation(s)
- Xiaoyu Pan
- State Key Laboratory of Bioelectronics
- School of Biological Science and Medical Engineering
- Southeast University
- Nanjing 210096
- China
| | - Jian Dong
- State Key Laboratory of Bioelectronics
- School of Biological Science and Medical Engineering
- Southeast University
- Nanjing 210096
- China
| | - Yan Li
- State Key Laboratory of Bioelectronics
- School of Biological Science and Medical Engineering
- Southeast University
- Nanjing 210096
- China
| | - Xiang Sun
- State Key Laboratory of Bioelectronics
- School of Biological Science and Medical Engineering
- Southeast University
- Nanjing 210096
- China
| | - Chunwei Yuan
- State Key Laboratory of Bioelectronics
- School of Biological Science and Medical Engineering
- Southeast University
- Nanjing 210096
- China
| | - Weiping Qian
- State Key Laboratory of Bioelectronics
- School of Biological Science and Medical Engineering
- Southeast University
- Nanjing 210096
- China
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215
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Zuo J, Meng G, Zhu C, Zhou Q, Li Z, Ke Y, Zhou N. Ordered arrays of Ag nanodendrite clusters as effective surface-enhanced Raman scattering substrates. RSC Adv 2016. [DOI: 10.1039/c6ra03223k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Large-area ordered Ag nanodendrite cluster tetragonal arrays have been achieved on a Zn plate via galvanic replacement reaction.
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Affiliation(s)
- Jie Zuo
- Key Laboratory of Materials Physics
- CAS Center for Excellence in Nanoscience
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- Institute of Solid State Physics
- Chinese Academy of Sciences
| | - Guowen Meng
- Key Laboratory of Materials Physics
- CAS Center for Excellence in Nanoscience
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- Institute of Solid State Physics
- Chinese Academy of Sciences
| | - Chuhong Zhu
- Key Laboratory of Materials Physics
- CAS Center for Excellence in Nanoscience
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- Institute of Solid State Physics
- Chinese Academy of Sciences
| | - Qitao Zhou
- Department of Mechanical Engineering
- Ulsan National Institute of Science and Technology (UNIST)
- Ulsan 44919
- Republic of Korea
| | - Zhongbo Li
- Key Laboratory of Materials Physics
- CAS Center for Excellence in Nanoscience
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- Institute of Solid State Physics
- Chinese Academy of Sciences
| | - Yan Ke
- Key Laboratory of Materials Physics
- CAS Center for Excellence in Nanoscience
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- Institute of Solid State Physics
- Chinese Academy of Sciences
| | - Ningning Zhou
- Key Laboratory of Materials Physics
- CAS Center for Excellence in Nanoscience
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- Institute of Solid State Physics
- Chinese Academy of Sciences
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216
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Wang S, Tay LL, Liu H. A SERS and electrical sensor from gas-phase generated Ag nanoparticles self-assembled on planar substrates. Analyst 2016; 141:1721-33. [DOI: 10.1039/c5an02515j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Exposure time dependent SERS and electrical resistance of the gas-phase generated close-packed monolayer silver nanoparticle film.
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Affiliation(s)
- S. Wang
- DRDC Suffield Research Centre
- Station Main, Medicine Hat
- Canada
| | - L.-L. Tay
- National Research Council Canada
- Ottawa
- Canada
| | - H. Liu
- DRDC Suffield Research Centre
- Station Main, Medicine Hat
- Canada
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217
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Lu B, Zhan F, Gong G, Cao Y, Zhen Q, Hu P. Room-temperature mechanochemical synthesis of silver nanoparticle homojunction assemblies for the surface-enhanced Raman scattering substrate. RSC Adv 2016. [DOI: 10.1039/c6ra14603a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Room-temperature mechanochemical synthesis of Ag/Ag homojunction assemblies giving giant surface electric field enhancement for SERS.
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Affiliation(s)
- Bo Lu
- Laboratory for Microstructures
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Fangyi Zhan
- Laboratory for Microstructures
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Guodong Gong
- Laboratory for Microstructures
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Yali Cao
- Institute of Applied Chemistry
- Xinjiang University
- Urumqi
- P. R. China
| | - Qiang Zhen
- Nanoscience & Technology Research Center
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Pengfei Hu
- Laboratory for Microstructures
- Shanghai University
- Shanghai 200444
- P. R. China
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218
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Kurita M, Arakawa R, Kawasaki H. Silver nanoparticle functionalized glass fibers for combined surface-enhanced Raman scattering spectroscopy (SERS)/surface-assisted laser desorption/ionization (SALDI) mass spectrometry via plasmonic/thermal hot spots. Analyst 2016; 141:5835-5841. [DOI: 10.1039/c6an00511j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Closely-packed silver nanoparticles with a size of 20–50 nm and an inter-particle nanoscale gap of less than 10 nm were effective for a simultaneously enhanced SERS/SALDI substrate via plasmonic/thermal “hot spots”.
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Affiliation(s)
- Masahiro Kurita
- Faculty of Chemistry
- Materials and Bioengineering
- Kansai University
- Suita 564-8680
- Japan
| | - Ryuichi Arakawa
- Faculty of Chemistry
- Materials and Bioengineering
- Kansai University
- Suita 564-8680
- Japan
| | - Hideya Kawasaki
- Faculty of Chemistry
- Materials and Bioengineering
- Kansai University
- Suita 564-8680
- Japan
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219
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Vilar-Vidal N, Bonhommeau S, Talaga D, Ravaine S. One-pot synthesis of gold nanodimers and their use as surface-enhanced Raman scattering tags. NEW J CHEM 2016. [DOI: 10.1039/c6nj01389a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold dimers consisting of 40 nm-diameter nanospheres show enhancement factors as high as ∼1.8 × 107at the hot-spot level.
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Affiliation(s)
| | | | - David Talaga
- CNRS
- ISM
- UMR 5255
- Université de Bordeaux
- F-33400 Talence
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220
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Zeng Z, Liu Y, Wei J. Recent advances in surface-enhanced raman spectroscopy (SERS): Finite-difference time-domain (FDTD) method for SERS and sensing applications. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.06.009] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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221
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Qazi UY, Javaid R. A Review on Metal Nanostructures: Preparation Methods and Their Potential Applications. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/anp.2016.51004] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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222
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Milekhin AG, Sveshnikova LL, Duda TA, Rodyakina EE, Dzhagan VM, Gordan OD, Veber SL, Himcinschi C, Latyshev AV, Zahn DRT. Surface-enhanced Raman scattering by colloidal CdSe nanocrystal submonolayers fabricated by the Langmuir-Blodgett technique. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2015; 6:2388-95. [PMID: 26734529 PMCID: PMC4685798 DOI: 10.3762/bjnano.6.245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 11/24/2015] [Indexed: 06/05/2023]
Abstract
We present the results of an investigation of surface-enhanced Raman scattering (SERS) by optical phonons in colloidal CdSe nanocrystals (NCs) homogeneously deposited on both arrays of Au nanoclusters and Au dimers using the Langmuir-Blodgett technique. The coverage of the deposited NCs was less than one monolayer, as determined by transmission and scanning electron microscopy. SERS by optical phonons in CdSe nanocrystals showed a significant enhancement that depends resonantly on the Au nanocluster and dimer size, and thus on the localized surface plasmon resonance (LSPR) energy. The deposition of CdSe nanocrystals on the Au dimer nanocluster arrays enabled us to study the polarization dependence of SERS. The maximal SERS signal was observed for light polarization parallel to the dimer axis. The polarization ratio of the SERS signal parallel and perpendicular to the dimer axis was 20. The SERS signal intensity was also investigated as a function of the distance between nanoclusters in a dimer. Here the maximal SERS enhancement was observed for the minimal distance studied (about 10 nm), confirming the formation of SERS "hot spots".
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Affiliation(s)
- Alexander G Milekhin
- A.V. Rzhanov Institute of Semiconductor Physics, pr. Lavrentieva 13, Novosibirsk 630090, Russia
- Novosibirsk State University, Pirogov str. 2, Novosibirsk 630090, Russia
| | - Larisa L Sveshnikova
- A.V. Rzhanov Institute of Semiconductor Physics, pr. Lavrentieva 13, Novosibirsk 630090, Russia
| | - Tatyana A Duda
- A.V. Rzhanov Institute of Semiconductor Physics, pr. Lavrentieva 13, Novosibirsk 630090, Russia
| | - Ekaterina E Rodyakina
- A.V. Rzhanov Institute of Semiconductor Physics, pr. Lavrentieva 13, Novosibirsk 630090, Russia
- Novosibirsk State University, Pirogov str. 2, Novosibirsk 630090, Russia
| | - Volodymyr M Dzhagan
- Semiconductor Physics, Technische Universität Chemnitz, 09107 Chemnitz, Germany
| | - Ovidiu D Gordan
- Semiconductor Physics, Technische Universität Chemnitz, 09107 Chemnitz, Germany
| | - Sergey L Veber
- Novosibirsk State University, Pirogov str. 2, Novosibirsk 630090, Russia
- International Tomography Center SB RAS, Novosibirsk 630090, Russia
| | - Cameliu Himcinschi
- Institut für Theoretische Physik, TU Bergakademie Freiberg, 09596 Freiberg, Germany
| | - Alexander V Latyshev
- A.V. Rzhanov Institute of Semiconductor Physics, pr. Lavrentieva 13, Novosibirsk 630090, Russia
- Novosibirsk State University, Pirogov str. 2, Novosibirsk 630090, Russia
| | - Dietrich R T Zahn
- Semiconductor Physics, Technische Universität Chemnitz, 09107 Chemnitz, Germany
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223
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Roy SD, Ghosh M, Chowdhury J. How hottest geometries and adsorptive parameters influence the SER(R)S spectra of Methylene Blue molecules adsorbed on nanocolloidal gold particles of varied sizes? SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 151:796-806. [PMID: 26172467 DOI: 10.1016/j.saa.2015.06.125] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2015] [Revised: 06/22/2015] [Accepted: 06/23/2015] [Indexed: 05/24/2023]
Abstract
The SER(R)S spectra of Methylene Blue (MB) molecule adsorbed on gold nanocolloidal particles (AuNCs) have been investigated. The adsorptive parameters of the molecule adsorbed on AuNCs have been evaluated with the aid of Fluorescence Spectroscopy study. Fluorescence spectroscopic studies have been further applied to understand the concentration of probe molecule actually adsorbed on AuNC surfaces. Gigantic enhancements ∼10(6)-10(16) orders of magnitude have been recorded for the enhanced Raman bands in the SER(R)S spectra. Three-dimensional Finite Difference Time Domain (3D-FDTD) simulations studies have been carried out to predict the distributions of electric fields around the possible nanoaggregated hot geometries considered to be responsible for the huge enhancements of SER(R)S bands of the MB molecule.
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Affiliation(s)
- Sannak Dutta Roy
- Department of Physics, Sammilani Mahavidyalaya, Baghajatin Station, E.M. Bypass, Kolkata 700094, India
| | - Manash Ghosh
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Joydeep Chowdhury
- Department of Physics, Sammilani Mahavidyalaya, Baghajatin Station, E.M. Bypass, Kolkata 700094, India.
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224
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Piliugina ES, Heisler F, Chervinskii SD, Samusev AK, Lipovskii AA. Control of surface plasmon resonance in out-diffused silver nanoislands for surface-enhanced Raman scattering. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/1742-6596/661/1/012034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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225
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Determination of histamine in canned tuna by molecularly imprinted polymers-surface enhanced Raman spectroscopy. Anal Chim Acta 2015; 901:68-75. [DOI: 10.1016/j.aca.2015.10.025] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 10/21/2015] [Accepted: 10/23/2015] [Indexed: 11/21/2022]
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226
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Liu J, Meng G, Li Z, Huang Z, Li X. Ag-NP@Ge-nanotaper/Si-micropillar ordered arrays as ultrasensitive and uniform surface enhanced Raman scattering substrates. NANOSCALE 2015; 7:18218-24. [PMID: 26483141 DOI: 10.1039/c5nr06001j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Surface-enhanced Raman scattering (SERS) is considered to be an excellent candidate for analytical detection schemes, because of its molecular specificity, rapid response and high sensitivity. Here, SERS-substrates of Ag-nanoparticle (Ag-NP) decorated Ge-nanotapers grafted on hexagonally ordered Si-micropillar (denoted as Ag-NP@Ge-nanotaper/Si-micropillar) arrays are fabricated via a combinatorial process of two-step etching to achieve hexagonal Si-micropillar arrays, chemical vapor deposition of flocky Ge-nanotapers on each Si-micropillar and decoration of Ag-NPs onto the Ge-nanotapers through galvanic displacement. With high density three-dimensional (3D) "hot spots" created from the large quantities of the neighboring Ag-NPs and large-scale uniform morphology, the hierarchical Ag-NP@Ge-nanotaper/Si-micropillar arrays exhibit strong and reproducible SERS activity. Using our hierarchical 3D SERS-substrates, both methyl parathion (a commonly used pesticide) and PCB-2 (one congener of highly toxic polychlorinated biphenyls) with concentrations down to 10(-7) M and 10(-5) M have been detected respectively, showing great potential in SERS-based rapid trace-level detection of toxic organic pollutants in the environment.
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Affiliation(s)
- Jing Liu
- Key Laboratory of Materials Physics, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China.
| | - Guowen Meng
- Key Laboratory of Materials Physics, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China. and University of Science and Technology of China, Hefei, 230026, China
| | - Zhongbo Li
- Key Laboratory of Materials Physics, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China.
| | - Zhulin Huang
- Key Laboratory of Materials Physics, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China.
| | - Xiangdong Li
- Key Laboratory of Materials Physics, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China.
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227
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Rajeeva BB, Hernandez DS, Wang M, Perillo E, Lin L, Scarabelli L, Pingali B, Liz-Marzán LM, Dunn AK, Shear JB, Zheng Y. Regioselective Localization and Tracking of Biomolecules on Single Gold Nanoparticles. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2015; 2:1500232. [PMID: 27668148 PMCID: PMC5019259 DOI: 10.1002/advs.201500232] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 08/14/2015] [Indexed: 05/04/2023]
Abstract
Selective localization of biomolecules at the hot spots of a plasmonic nanoparticle is an attractive strategy to exploit the light-matter interaction due to the high field concentration. Current approaches for hot spot targeting are time-consuming and involve prior knowledge of the hot spots. Multiphoton plasmonic lithography is employed to rapidly immobilize bovine serum albumin (BSA) hydrogel at the hot spot tips of a single gold nanotriangle (AuNT). Regioselectivity and quantity control by manipulating the polarization and intensity of the incident laser are also established. Single AuNTs are tracked using dark-field scattering spectroscopy and scanning electron microscopy to characterize the regioselective process. Fluorescence lifetime measurements further confirm BSA immobilization on the AuNTs. Here, the AuNT-BSA hydrogel complexes, in conjunction with single-particle optical monitoring, can act as a framework for understanding light-molecule interactions at the subnanoparticle level and has potential applications in biophotonics, nanomedicine, and life sciences.
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Affiliation(s)
- Bharath Bangalore Rajeeva
- Department of Mechanical Engineering Materials Science and Engineering Program Texas Materials Institute The University of Texas at Austin Austin TX 78712 USA
| | - Derek S Hernandez
- Department of Chemistry The University of Texas at Austin Austin TX 78712 USA
| | - Mingsong Wang
- Department of Mechanical Engineering Materials Science and Engineering Program Texas Materials Institute The University of Texas at Austin Austin TX 78712 USA
| | - Evan Perillo
- Department of Biomedical Engineering The University of Texas at Austin Austin TX 78712 USA
| | - Linhan Lin
- Department of Mechanical Engineering Materials Science and Engineering Program Texas Materials Institute The University of Texas at Austin Austin TX 78712 USA
| | - Leonardo Scarabelli
- Bionanoplasmonics Laboratory CIC biomaGUNE Paseo de Miramón 182 20009 Donostia-San Sebastián Spain
| | - Bharadwaj Pingali
- Department of Mechanical Engineering Materials Science and Engineering Program Texas Materials Institute The University of Texas at Austin Austin TX 78712 USA
| | - Luis M Liz-Marzán
- Bionanoplasmonics Laboratory CIC biomaGUNE Paseo de Miramón 182 20009 Donostia-San Sebastián Spain; Ikerbasque Basque Foundation for Science 48013 Bilbao Spain
| | - Andrew K Dunn
- Department of Biomedical Engineering The University of Texas at Austin Austin TX 78712 USA
| | - Jason B Shear
- Department of Chemistry The University of Texas at Austin Austin TX 78712 USA
| | - Yuebing Zheng
- Department of Mechanical Engineering Materials Science and Engineering Program Texas Materials Institute The University of Texas at Austin Austin TX 78712 USA
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228
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Ag Nanorods Coated with Ultrathin TiO2 Shells as Stable and Recyclable SERS Substrates. Sci Rep 2015; 5:15442. [PMID: 26486994 PMCID: PMC4614262 DOI: 10.1038/srep15442] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 09/14/2015] [Indexed: 01/05/2023] Open
Abstract
TiO2-coated Ag nanorods (Ag@TiO2 NRs) have been fabricated as multifunctional surface-enhanced Raman scattering (SERS) substrates. Uniform TiO2 shells could sufficiently protect the internal Ag NRs against oxidation and sulfuration, thus the temporal stability of SERS substrates was markedly improved. Meanwhile, due to the synergetic effect between crystalline TiO2 and Ag, the nanocomposites could clean themselves via photocatalytic degradation of the adsorbed molecules under ultraviolet irradiation and water dilution, making the SERS substrates renewable. Such Ag@TiO2 NRs were shown to serve as outstanding SERS sensors featuring high sensitivity, superior stability and recyclability.
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229
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Kang M, Park SG, Jeong KH. Repeated Solid-state Dewetting of Thin Gold Films for Nanogap-rich Plasmonic Nanoislands. Sci Rep 2015; 5:14790. [PMID: 26469768 PMCID: PMC4606563 DOI: 10.1038/srep14790] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 09/09/2015] [Indexed: 11/09/2022] Open
Abstract
This work reports a facile wafer-level fabrication for nanogap-rich gold nanoislands for highly sensitive surface enhanced Raman scattering (SERS) by repeating solid-state thermal dewetting of thin gold film. The method provides enlarged gold nanoislands with small gap spacing, which increase the number of electromagnetic hotspots and thus enhance the extinction intensity as well as the tunability for plasmon resonance wavelength. The plasmonic nanoislands from repeated dewetting substantially increase SERS enhancement factor over one order-of-magnitude higher than those from a single-step dewetting process and they allow ultrasensitive SERS detection of a neurotransmitter with extremely low Raman activity. This simple method provides many opportunities for engineering plasmonics for ultrasensitive detection and highly efficient photon collection.
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Affiliation(s)
- Minhee Kang
- Korea Advanced Institute of Science and Technology (KAIST), Department of Bio and Brain Engineering and KAIST Institute for Optical Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Sang-Gil Park
- Korea Advanced Institute of Science and Technology (KAIST), Department of Bio and Brain Engineering and KAIST Institute for Optical Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Ki-Hun Jeong
- Korea Advanced Institute of Science and Technology (KAIST), Department of Bio and Brain Engineering and KAIST Institute for Optical Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
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230
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Pallaoro A, Braun GB, Moskovits M. Biotags Based on Surface-Enhanced Raman Can Be as Bright as Fluorescence Tags. NANO LETTERS 2015; 15:6745-50. [PMID: 26317146 DOI: 10.1021/acs.nanolett.5b02594] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Surface enhanced Raman spectroscopy (SERS) is a powerful analytical technique that has been proposed as a substitute for fluorescence for biological imaging and detection but is not yet commercially utilized. The reason lies primarily in the lower intensity and poor reproducibility of most metal nanoparticle-based tags as compared to their fluorescence-based counterparts. Here, using a technique that scrupulously preserves the same number of dye molecules in both the SERS and fluorescence measurements, we show that SERS-based biotags (SBTs) with highly reproducible optical properties can be nanoengineered such that their brightness is at least equal to that of fluorescence-based tags.
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Affiliation(s)
- Alessia Pallaoro
- Department of Chemistry and Biochemistry, University of California , Santa Barbara, California 93106, United States
| | - Gary B Braun
- Cancer Research Center, Sanford Burnham Prebys Medical Discovery Institute , 10901 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Martin Moskovits
- Department of Chemistry and Biochemistry, University of California , Santa Barbara, California 93106, United States
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231
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Lane LA, Qian X, Nie S. SERS Nanoparticles in Medicine: From Label-Free Detection to Spectroscopic Tagging. Chem Rev 2015; 115:10489-529. [DOI: 10.1021/acs.chemrev.5b00265] [Citation(s) in RCA: 607] [Impact Index Per Article: 67.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lucas A. Lane
- Departments
of Biomedical Engineering and Chemistry, Emory University and Georgia Institute of Technology, Health Sciences Research Building,
Room E116, 1760 Haygood Drive, Atlanta, Georgia 30322, United States
| | - Ximei Qian
- Departments
of Biomedical Engineering and Chemistry, Emory University and Georgia Institute of Technology, Health Sciences Research Building,
Room E116, 1760 Haygood Drive, Atlanta, Georgia 30322, United States
| | - Shuming Nie
- Departments
of Biomedical Engineering and Chemistry, Emory University and Georgia Institute of Technology, Health Sciences Research Building,
Room E116, 1760 Haygood Drive, Atlanta, Georgia 30322, United States
- College
of Engineering and Applied Sciences, Nanjing University, 22 Hankou
Road, Nanjing, Jiangsu Province 210093, China
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232
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Leng Y, Sun K, Chen X, Li W. Suspension arrays based on nanoparticle-encoded microspheres for high-throughput multiplexed detection. Chem Soc Rev 2015; 44:5552-95. [PMID: 26021602 PMCID: PMC5223091 DOI: 10.1039/c4cs00382a] [Citation(s) in RCA: 157] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Spectrometrically or optically encoded microsphere based suspension array technology (SAT) is applicable to the high-throughput, simultaneous detection of multiple analytes within a small, single sample volume. Thanks to the rapid development of nanotechnology, tremendous progress has been made in the multiplexed detecting capability, sensitivity, and photostability of suspension arrays. In this review, we first focus on the current stock of nanoparticle-based barcodes as well as the manufacturing technologies required for their production. We then move on to discuss all existing barcode-based bioanalysis patterns, including the various labels used in suspension arrays, label-free platforms, signal amplification methods, and fluorescence resonance energy transfer (FRET)-based platforms. We then introduce automatic platforms for suspension arrays that use superparamagnetic nanoparticle-based microspheres. Finally, we summarize the current challenges and their proposed solutions, which are centered on improving encoding capacities, alternative probe possibilities, nonspecificity suppression, directional immobilization, and "point of care" platforms. Throughout this review, we aim to provide a comprehensive guide for the design of suspension arrays, with the goal of improving their performance in areas such as multiplexing capacity, throughput, sensitivity, and cost effectiveness. We hope that our summary on the state-of-the-art development of these arrays, our commentary on future challenges, and some proposed avenues for further advances will help drive the development of suspension array technology and its related fields.
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Affiliation(s)
- Yuankui Leng
- The State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
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233
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Blake-Hedges JM, Greenspan SH, Kean JA, McCarron MA, Mendonca ML, Wustholz KL. Plasmon-enhanced fluorescence of dyes on silica-coated silver nanoparticles: A single-nanoparticle spectroscopy study. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.06.083] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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234
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Rong Z, Xiao R, Wang C, Wang D, Wang S. Plasmonic Ag Core-Satellite Nanostructures with a Tunable Silica-Spaced Nanogap for Surface-Enhanced Raman Scattering. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:8129-37. [PMID: 26132410 DOI: 10.1021/acs.langmuir.5b01713] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Plasmonic Ag core-satellite nanostructures were synthesized by utilizing the ultrathin silica shell as a spacer to generate a tunable nanogap between the Ag core and satellites. To synthesize the nanoparticles, Ag nanoparticles (Ag NPs) with a diameter of ∼60 nm were synthesized as cores, on which Raman dyes were adsorbed and then tunable ultrathin silica shells from 2.0 to 6.5 nm were coated, followed by the deposition of Ag NPs as satellites onto the silica surface. The relationships between the SERS signal and the important parameters, including the satellite diameter and the nanogap distance, were studied by experimental methods and theoretical calculations. The maximum SERS intensity of the core-satellite nanoparticles was over 14.6 times stronger than that of the isolated Raman-encoded Ag/PATP@SiO2 NP. The theoretical calculations indicated that the local maximum calculated enhancement factor (EF) of the hot spots with a 2.0 nm nanogap was 9.5 × 10(5). The well-defined Ag core-satellite nanostructures have a high structural uniformity and an anomalously strong electromagnetic enhancement for highly quantitative SERS, leading to a better understanding of hot spot formation and providing new insights into the optimal design and synthesis of the hot SERS nanostructures in a controlled manner.
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Affiliation(s)
- Zhen Rong
- †Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Diseases, Beijing Institute of Radiation Medicine, Beijing 100850, PR China
| | - Rui Xiao
- †Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Diseases, Beijing Institute of Radiation Medicine, Beijing 100850, PR China
| | - Chongwen Wang
- †Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Diseases, Beijing Institute of Radiation Medicine, Beijing 100850, PR China
| | - Donggen Wang
- §Institute of Transfusion Medicine, Beijing 100850, PR China
| | - Shengqi Wang
- †Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Diseases, Beijing Institute of Radiation Medicine, Beijing 100850, PR China
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235
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Tisserant JN, Reissner PA, Beyer H, Fedoryshyn Y, Stemmer A. Water-Mediated Assembly of Gold Nanoparticles into Aligned One-Dimensional Superstructures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:7220-7. [PMID: 26072942 DOI: 10.1021/acs.langmuir.5b01135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
This Article shows that water in ethanol colloids of gold nanoparticles enhances the formation of linear clusters and, more important for applications in electronics, determines their assembly on surfaces. We show by dynamic light scattering that ethanol colloids contain mainly monomers and dimers and that wormlike superstructures are mostly absent, despite UV-vis evidence of aggregation. Water added to the colloid as a cosolvent was found to enhance the number of clusters as well as their average size, confirming its role in linear self-assembly, on the scale of a few particles. Water adsorbed from the atmosphere during coating was also found to be a powerful lever to tune self-assembly on surfaces. By varying the relative humidity, a sharp transition from branched to linear superstructures was observed, showing the importance of water as a cosolvent in the formation of cluster superstructures. We show that one-dimensional superstructures may form due to long-range mobility of precursor clusters on wet surfaces, allowing their rearrangement. The understanding of the phenomenon allows us to statistically align both clusters and resulting superstructures on patterned substrates, opening the way to rapid screening in molecular electronics.
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Affiliation(s)
| | - Patrick A Reissner
- †Nanotechnology Group, ETH Zurich, Säumerstrasse 4, CH-8803 Rüschlikon, Switzerland
| | - Hannes Beyer
- †Nanotechnology Group, ETH Zurich, Säumerstrasse 4, CH-8803 Rüschlikon, Switzerland
| | - Yuriy Fedoryshyn
- ‡Institute of Electromagnetic Fields, ETH Zurich, Gloriastrasse 35, CH-8092 Zurich, Switzerland
| | - Andreas Stemmer
- †Nanotechnology Group, ETH Zurich, Säumerstrasse 4, CH-8803 Rüschlikon, Switzerland
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236
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Wen F, Zhang Y, Gottheim S, King NS, Zhang Y, Nordlander P, Halas NJ. Charge Transfer Plasmons: Optical Frequency Conductances and Tunable Infrared Resonances. ACS NANO 2015; 9:6428-6435. [PMID: 25986388 DOI: 10.1021/acsnano.5b02087] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A charge transfer plasmon (CTP) appears when an optical-frequency conductive pathway between two metallic nanoparticles is established, enabling the transfer of charge between nanoparticles when the plasmon is excited. Here we investigate the properties of the CTP in a nanowire-bridged dimer geometry. Varying the junction geometry controls its conductance, which modifies the resonance energies and scattering intensities of the CTP while also altering the other plasmon modes of the nanostructure. Reducing the junction conductance shifts this resonance to substantially lower energies in the near- and mid-infrared regions of the spectrum. The CTP offers both a high-information probe of optical frequency conductances in nanoscale junctions and a new, unique approach to controllably engineering tunable plasmon modes at infrared wavelengths.
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Affiliation(s)
- Fangfang Wen
- †Department of Chemistry, ‡Department of Physics and Astronomy, §Department of Electrical and Computer Engineering, and ∥Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Yue Zhang
- †Department of Chemistry, ‡Department of Physics and Astronomy, §Department of Electrical and Computer Engineering, and ∥Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Samuel Gottheim
- †Department of Chemistry, ‡Department of Physics and Astronomy, §Department of Electrical and Computer Engineering, and ∥Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Nicholas S King
- †Department of Chemistry, ‡Department of Physics and Astronomy, §Department of Electrical and Computer Engineering, and ∥Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Yu Zhang
- †Department of Chemistry, ‡Department of Physics and Astronomy, §Department of Electrical and Computer Engineering, and ∥Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Peter Nordlander
- †Department of Chemistry, ‡Department of Physics and Astronomy, §Department of Electrical and Computer Engineering, and ∥Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
| | - Naomi J Halas
- †Department of Chemistry, ‡Department of Physics and Astronomy, §Department of Electrical and Computer Engineering, and ∥Laboratory for Nanophotonics, Rice University, Houston, Texas 77005, United States
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237
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Aybeke EN, Lacroute Y, Elie-Caille C, Bouhelier A, Bourillot E, Lesniewska E. Homogeneous large-scale crystalline nanoparticle-covered substrate with high SERS performance. NANOTECHNOLOGY 2015; 26:245302. [PMID: 26016420 DOI: 10.1088/0957-4484/26/24/245302] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
This article details the surface-enhanced Raman scattering (SERS) performance of plasmonic substrates fabricated by a physical metal evaporation technique that uses no precursor or intermediate coating. We outline a cost-effective nanofabrication protocol that uses common laboratory equipment to produce homogeneously covered crystalline nanoparticle substrates. Our fabrication yields a homogeneous SERS response over the whole surface. The platform is tested with methylene blue diluted at various concentrations to estimate the sensitivity, homogeneity, and reproducibility of the process. The capacity of the substrates is also confirmed with spectroscopic investigations of human microsomal cytochrome b5.
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Affiliation(s)
- E N Aybeke
- Laboratory Interdisciplinaire Carnot de Bourgogne (ICB), UMR CNRS 6303, University of Bourgogne Franche-Comte, Besançon, France
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238
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Gu X, Camden JP. Surface-Enhanced Raman Spectroscopy-Based Approach for Ultrasensitive and Selective Detection of Hydrazine. Anal Chem 2015; 87:6460-4. [DOI: 10.1021/acs.analchem.5b01566] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xin Gu
- Department of Chemistry and
Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jon P. Camden
- Department of Chemistry and
Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
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239
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Pérez-Mayen L, Oliva J, Torres-Castro A, De la Rosa E. SERS substrates fabricated with star-like gold nanoparticles for zeptomole detection of analytes. NANOSCALE 2015; 7:10249-58. [PMID: 25990708 DOI: 10.1039/c5nr02004b] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
This work presents the design of substrates for Surface Enhanced Raman Scattering (SERS) using star-like gold nanoparticles which were synthesized using a wet chemical method and functionalized with 1-dodecanethiol. This molecule allowed us to obtain a spacing of ∼2.6 nm among gold stars, which promoted the generation of SERS hotspots for single molecule detection. The gold nanoparticles were deposited on silicon substrates or on gold coated silicon substrates by using the Langmuir-Blodgett method which permitted the zeptomole detection of Rhodamine B (total moles per laser spot area). The Raman enhancement factor (EF) achieved for this level of detection was 10(12), and was obtained on the SERS substrate fabricated with the configuration: Si/Au film/Au nanoparticles. Raman spectra of the molecules TWEEN 20 and p-terphenyl were also measured in order to elucidate the effect of the molecule's length on the enhancement factor. According to these results, our SERS substrates without the gold film are useful for a minimum detection level of ∼10(-14) moles of analytes with sizes equal to or less than 1.3 nm and ∼10(-18) moles of analytes with the gold film (total moles per sample).
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240
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Hakonen A, Svedendahl M, Ogier R, Yang ZJ, Lodewijks K, Verre R, Shegai T, Andersson PO, Käll M. Dimer-on-mirror SERS substrates with attogram sensitivity fabricated by colloidal lithography. NANOSCALE 2015; 7:9405-9410. [PMID: 25952612 DOI: 10.1039/c5nr01654a] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Nanoplasmonic substrates with optimized field-enhancement properties are a key component in the continued development of surface-enhanced Raman scattering (SERS) molecular analysis but are challenging to produce inexpensively in large scale. We used a facile and cost-effective bottom-up technique, colloidal hole-mask lithography, to produce macroscopic dimer-on-mirror gold nanostructures. The optimized structures exhibit excellent SERS performance, as exemplified by detection of 2.5 and 50 attograms of BPE, a common SERS probe, using Raman microscopy and a simple handheld device, respectively. The corresponding Raman enhancement factor is of the order 10(11), which compares favourably to previously reported record performance values.
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Affiliation(s)
- Aron Hakonen
- Department of Applied Physics, Division of Bionanophotonics, Chalmers University of Technology, Gothenburg, Sweden.
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241
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Wang AX, Kong X. Review of Recent Progress of Plasmonic Materials and Nano-Structures for Surface-Enhanced Raman Scattering. MATERIALS (BASEL, SWITZERLAND) 2015; 8:3024-3052. [PMID: 26900428 PMCID: PMC4758820 DOI: 10.3390/ma8063024] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 05/20/2015] [Indexed: 01/20/2023]
Abstract
Surface-enhanced Raman scattering (SERS) has demonstrated single-molecule sensitivity and is becoming intensively investigated due to its significant potential in chemical and biomedical applications. SERS sensing is highly dependent on the substrate, where excitation of the localized surface plasmons (LSPs) enhances the Raman scattering signals of proximate analyte molecules. This paper reviews research progress of SERS substrates based on both plasmonic materials and nano-photonic structures. We first discuss basic plasmonic materials, such as metallic nanoparticles and nano-rods prepared by conventional bottom-up chemical synthesis processes. Then, we review rationally-designed plasmonic nano-structures created by top-down approaches or fine-controlled synthesis with high-density hot-spots to provide large SERS enhancement factors (EFs). Finally, we discuss the research progress of hybrid SERS substrates through the integration of plasmonic nano-structures with other nano-photonic devices, such as photonic crystals, bio-enabled nanomaterials, guided-wave systems, micro-fluidics and graphene.
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Affiliation(s)
- Alan X. Wang
- School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR 97331, USA
| | - Xianming Kong
- Department of Forest Products Technology, School of Chemical Technology, Aalto University, P.O. Box 16300, FI-00076 Aalto, Finland; E-Mail:
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242
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Kitahama Y, Ikemachi T, Suzuki T, Miura T, Ozaki Y. Plasmonic properties of triangle-shaped silver trimers selectively fabricated by near-field photo-reduction using an apertured cantilever for an atomic force microscope. Chem Commun (Camb) 2015; 50:9693-6. [PMID: 25017956 DOI: 10.1039/c4cc04230a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
On an AgNO3 crystal, an equilateral or a right-angle triangle-shaped Ag trimer was selectively fabricated through near-field photo-reduction and observed in situ by using an apertured cantilever coupled with an atomic force microscope. By using the different triangle-shaped Ag trimers, irradiation wavelength and polarization dependence of surface-enhanced Raman scattering were investigated.
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Affiliation(s)
- Yasutaka Kitahama
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan.
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243
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Panagiotopoulos NT, Kalfagiannis N, Vasilopoulos KC, Pliatsikas N, Kassavetis S, Vourlias G, Karakassides MA, Patsalas P. Self-assembled plasmonic templates produced by microwave annealing: applications to surface-enhanced Raman scattering. NANOTECHNOLOGY 2015; 26:205603. [PMID: 25918264 DOI: 10.1088/0957-4484/26/20/205603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Perhaps the simplest method for creating metal nanoparticles on a substrate is by driving their self-assembly with the thermal annealing of a thin metal film. By properly tuning the annealing parameters one hopes to discover a recipe that allows the pre-determined design of the NP arrangement. However, thermal treatment is known for detrimental effects and is not really the manufacturer's route of choice when it comes to large-scale applications. An alternative method is the use of microwave annealing, a method that has never been applied for metal processing, due to the high reflectance of microwave radiation at the surface of a metal. However, in this work we challenge the widely used nanostructuring methods by proving the microwave's annealing ability to produce plasmonic templates, out of extremely thin metal films, by simply using a domestic microwave oven apparatus. We show that this process is generic and independent of the deposition method used for the metal and we further quantify the suitability of these plasmonic templates for use in surface-enhanced Raman scattering applications.
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Affiliation(s)
- N T Panagiotopoulos
- University of Ioannina, Department of Materials Science and Engineering, GR-45110 Ioannina, Greece
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244
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A sandwich substrate for ultrasensitive and label-free SERS spectroscopic detection of folic acid / methotrexate. Biomed Microdevices 2015; 16:673-9. [PMID: 24850231 DOI: 10.1007/s10544-014-9871-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
A highly sensitive surface enhanced Raman scattering (SERS) substrate with particle-film sandwich geometry has been developed for the label free detection of folic acid (FA) and methotrexate (MTX). In this sandwich structure, the bottom layer is composed of a copper foil decorated with silver nanoparticles synthesized by the galvanic displacement reaction, and top layer is constituted by silver nanoparticles. The FA and MTX molecules are sandwiched between the silver nanoparticles decorated copper film and the silver nanoparticles. The plasmonic coupling between the two layers of the sandwich structure greatly enhances the SERS spectra of FA and MTX. SERS activity of the substrate was studied and optimized by adjusting the time of galvanic displacement reaction. The SERS spectra of the FA and MTX showed the minimum detection concentration of 100 pM. The identification of methotrexate and folic acid analogs was also carried out by SERS spectra analysis.
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245
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Fateixa S, Nogueira HIS, Trindade T. Hybrid nanostructures for SERS: materials development and chemical detection. Phys Chem Chem Phys 2015; 17:21046-71. [PMID: 25960180 DOI: 10.1039/c5cp01032b] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review focuses on recent developments in hybrid and nanostructured substrates for SERS (surface-enhanced Raman scattering) studies. Thus substrates composed of at least two distinct types of materials, in which one is a SERS active metal, are considered here aiming at their use as platforms for chemical detection in a variety of contexts. Fundamental aspects related to the SERS effect and plasmonic behaviour of nanometals are briefly introduced. The materials described include polymer nanocomposites containing metal nanoparticles and coupled inorganic nanophases. Chemical approaches to tailor the morphological features of these substrates in order to get high SERS activity are reviewed. Finally, some perspectives for practical applications in the context of chemical detection of analytes using such hybrid platforms are presented.
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Affiliation(s)
- Sara Fateixa
- Department of Chemistry-CICECO University of Aveiro, 3810-193 Aveiro, Portugal.
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246
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Silver nanopartical over AuFON substrate for enhanced raman readout and their application in pesticide monitoring. Molecules 2015; 20:6299-309. [PMID: 25859785 PMCID: PMC6272536 DOI: 10.3390/molecules20046299] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/01/2015] [Accepted: 03/19/2015] [Indexed: 11/17/2022] Open
Abstract
Surface-enhanced Raman detection of thiram is demonstrated by using Ag-nanoparticles (Ag NPs) on Au film over nanosphere (AuFON) substrate as the hybrid substrate. The SERS signal of the Ag NPs attached to solid supports is studied. The close coupling together of thousands of Ag NPs on AuFON leads to the generation of hot spots for SERS. The Ag NPs on AuFON can be applied to detect rhodamine-6G (R6G) with the detection limitation of 10−11 M and the pesticide thiram in acetone with a detection limit of as low as 0.24 ppm, which is much lower than the maximal residue limit (MRL) of 7 ppm in fruit prescribed by the U.S. Environmental Protection Agency (EPA). The hybrid substrates are shown to be highly sensitive for the detection of thriam, which produce highly enhanced Raman signals with good uniformity and reproducibility due to having plenty of hot spots on its surface.
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247
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Khlebtsov BN, Khanadeev VA, Panfilova EV, Bratashov DN, Khlebtsov NG. Gold nanoisland films as reproducible SERS substrates for highly sensitive detection of fungicides. ACS APPLIED MATERIALS & INTERFACES 2015; 7:6518-29. [PMID: 25764374 DOI: 10.1021/acsami.5b01652] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
A wet-chemical approach is used to fabricate centimeter-scale gold nanoisland films (NIFs) with tunable morphology of islands and with strong electromagnetic coupling between them. The approach consists in a uniform seeding of small gold nanoparticles on a glass or silicon substrate, followed by controllable growth of the seeds into small nanoislands. A special technique for TEM sampling was developed to follow the gradual formation of larger-sized isolated nanoparticles, nanoislands of sintered overgrown seeds, and a complete gold layer with nanoscale cracks. The electromagnetic field distribution inside the fabricated NIFs was calculated by FDTD simulations applied to actual TEM images of the fabricated samples rather than to artificial models commonly used. SERS measurements with 1,4-aminothiophenol (ATP) molecules demonstrated the analytical enhancement factor about of 10(7) and the fundamental enhancement factor about of 10(8) for optimized substrates. These values were at least 1 order of magnitude higher than that for self-assembled arrays of gold nanostars and silver nanocubes. SERS spectra of independent samples demonstrated good sample-to-sample reproducibility in terms of the relative standard deviation (RSD) of the main peaks less than 20%. Additionally, Raman maps with 1 μm increment in X-Y directions of NIFs (800 spectral spots) demonstrated good point-to-point repeatability in the intensity of the main Raman vibration modes (RSD varied from 5% to 15% for 50 randomly selected points). A real-life application of the fabricated SERS substrates is exemplified by the detection of the thiram fungicide in apple peels within the 5-250 ppb linear detection range. Specifically, the NIF-based SERS technology detected thiram on apple peel down to level of 5 ng/cm(2).
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Affiliation(s)
- Boris N Khlebtsov
- †Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prospekt Entuziastov, Saratov 410049, Russia
- ‡Saratov State University, 83 Ulitsa Astrakhanskaya, Saratov 410012, Russia
| | - Vitaly A Khanadeev
- †Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prospekt Entuziastov, Saratov 410049, Russia
- ‡Saratov State University, 83 Ulitsa Astrakhanskaya, Saratov 410012, Russia
| | - Elizaveta V Panfilova
- †Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prospekt Entuziastov, Saratov 410049, Russia
| | - Daniil N Bratashov
- ‡Saratov State University, 83 Ulitsa Astrakhanskaya, Saratov 410012, Russia
| | - Nikolai G Khlebtsov
- †Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 13 Prospekt Entuziastov, Saratov 410049, Russia
- ‡Saratov State University, 83 Ulitsa Astrakhanskaya, Saratov 410012, Russia
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248
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Wei G, Wang J, Chen Y. Electromagnetic enhancement of ordered silver nanorod arrays evaluated by discrete dipole approximation. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2015; 6:686-696. [PMID: 25821708 PMCID: PMC4362013 DOI: 10.3762/bjnano.6.69] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 02/11/2015] [Indexed: 05/30/2023]
Abstract
The enhancement factor (EF) of surface-enhanced Raman scattering (SERS) from two-dimensional (2D) hexagonal silver nanorod (AgNR) arrays were investigated in terms of electromagnetic (EM) mechanism by using the discrete dipole approximation (DDA) method. The dependence of EF on several parameters, i.e., structure, length, excitation wavelength, incident angle and polarization, and gap size has been investigated. "Hotspots" were found distributed in the gaps between adjacent nanorods. Simulations of AgNR arrays of different lengths revealed that increasing the rod length from 374 to 937 nm (aspect ratio from 2.0 to 5.0) generated more "hotspots" but not necessarily increased EF under both 514 and 532 nm excitation. A narrow lateral gap (in the incident plane) was found to result in strong EF, while the dependence of EF on the diagonal gap (out of the incident plane) showed an oscillating behavior. The EF of the array was highly dependent on the angle and polarization of the incident light. The structure of AgNR and the excitation wavelength were also found to affect the EF. The EF of random arrays was stronger than that of an ordered one with the same average gap of 21 nm, which could be explained by the exponential dependence of EF on the lateral gap size. Our results also suggested that absorption rather than extinction or scattering could be a good indicator of EM enhancement. It is expected that the understanding of the dependence of local field enhancement on the structure of the nanoarrays and incident excitations will shine light on the optimal design of efficient SERS substrates and improved performance.
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Affiliation(s)
- Guoke Wei
- Department of Physics, Beihang University, Beijing 100191, China
- Photophysics Group, Centre for Molecular Nanometrology, Department of Physics, SUPA, University of Strathclyde, John Anderson Building, 107 Rottenrow, Glasgow G4 0NG, UK
| | - Jinliang Wang
- Department of Physics, Beihang University, Beijing 100191, China
| | - Yu Chen
- Photophysics Group, Centre for Molecular Nanometrology, Department of Physics, SUPA, University of Strathclyde, John Anderson Building, 107 Rottenrow, Glasgow G4 0NG, UK
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249
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Perumal J, Balasundaram G, Mahyuddin AP, Choolani M, Olivo M. SERS-based quantitative detection of ovarian cancer prognostic factor haptoglobin. Int J Nanomedicine 2015; 10:1831-40. [PMID: 25834423 PMCID: PMC4358420 DOI: 10.2147/ijn.s75552] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Surface-enhanced Raman spectroscopy (SERS) is increasingly being used for biosensing because of its high sensitivity and low detection limit, which are made possible by the unique Raman 'fingerprint' spectra from the biomolecules. Here we propose a novel SERS method for the fast, sensitive, and reliable quantitative analysis of haptoglobin (Hp), an acute phase plasma glycoprotein that is widely gaining application as a prognostic ovarian cancer biomarker. We exploited the peroxidase activity of the hemoglobin-haptoglobin (Hb-Hp) complex formed by the selective and specific binding of Hp to free Hb to catalyze the reaction of 3,3',5,5'-tetramethylbenzidine (TMB) substrate and hydrogen peroxide to result in the final product of strongly SERS-active TMB(2+). We observed a linear increase in the SERS signal of TMB(2+) with increasing concentrations of Hb-Hp complex from 50 nM to 34 μM. Based on this concentration-dependent SERS spectrum, we quantified Hp in clinical samples. We observed that our inference about the prognosis of the disease coincided with the histology data and that our method was much more sensitive than the enzyme-linked immunosorbent assay method.
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Affiliation(s)
- Jayakumar Perumal
- Bio-Optical Imaging Group, Singapore Bioimaging Consortium, Agency for Science Technology and Research (ASTAR), Helios, Singapore
| | - Ghayathri Balasundaram
- Bio-Optical Imaging Group, Singapore Bioimaging Consortium, Agency for Science Technology and Research (ASTAR), Helios, Singapore
| | - Aniza P Mahyuddin
- Departments of Obstetrics and Gynecology and Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Mahesh Choolani
- Departments of Obstetrics and Gynecology and Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Malini Olivo
- Bio-Optical Imaging Group, Singapore Bioimaging Consortium, Agency for Science Technology and Research (ASTAR), Helios, Singapore ; School of Physics, National University Ireland, Galway, Ireland
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250
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Correa-Duarte MA, Pazos Perez N, Guerrini L, Giannini V, Alvarez-Puebla RA. Boosting the Quantitative Inorganic Surface-Enhanced Raman Scattering Sensing to the Limit: The Case of Nitrite/Nitrate Detection. J Phys Chem Lett 2015; 6:868-874. [PMID: 26262665 DOI: 10.1021/acs.jpclett.5b00115] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A high-performance ionic-sensing platform has been developed by an interdisciplinary approach, combining the classical colorimetric Griess reaction and new concepts of nanotechnology, such as plasmonic coupling of nanoparticles and surface-enhanced Raman scattering (SERS) spectroscopy. This approach exploits the advantages of combined SERS/surface-enhanced resonant Raman Scattering (SERRS) by inducing the formation of homogeneous hot spots and a colored complex in resonance with the laser line, to yield detection limits for nitrite down to the subpicomolar level. The performance of this new method was compared with the classical Griess reaction and ionic chromatography showing detection limits about 6 and 3 orders of magnitude lower, respectively.
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Affiliation(s)
- Miguel A Correa-Duarte
- †Departamento de Química Física, Biomedical Research Center (CINBIO) and Institute of Biomedical Research of Vigo (IBIV), Universidade de Vigo, 36310 Vigo, Spain
| | - Nicolas Pazos Perez
- ‡Departamento de Química Física e Inorgánica, Universitat Rovira i Virgili and Centro Tecnologico de la Quimica de Cataluña, Carrer de Marcel·lí Domingo s/n, 43007 Tarragona, Spain
- §Medcom Advance SA, Viladecans Bussines Park, Carrer de Bertran i Musitu, 83-85, 08840 Viladecans (Barcelona), Spain
| | - Luca Guerrini
- ‡Departamento de Química Física e Inorgánica, Universitat Rovira i Virgili and Centro Tecnologico de la Quimica de Cataluña, Carrer de Marcel·lí Domingo s/n, 43007 Tarragona, Spain
- §Medcom Advance SA, Viladecans Bussines Park, Carrer de Bertran i Musitu, 83-85, 08840 Viladecans (Barcelona), Spain
| | | | - Ramon A Alvarez-Puebla
- ‡Departamento de Química Física e Inorgánica, Universitat Rovira i Virgili and Centro Tecnologico de la Quimica de Cataluña, Carrer de Marcel·lí Domingo s/n, 43007 Tarragona, Spain
- §Medcom Advance SA, Viladecans Bussines Park, Carrer de Bertran i Musitu, 83-85, 08840 Viladecans (Barcelona), Spain
- ⊥ICREA, Passeig Lluís Companys 23, 08010 Barcelona, Spain
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