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Du X, Gao Z, He L. Quantifying the effect of non-ionic surfactant alkylphenol ethoxylates on the persistence of thiabendazole on fresh produce surface. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:2630-2640. [PMID: 37985216 DOI: 10.1002/jsfa.13147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 10/19/2023] [Accepted: 11/21/2023] [Indexed: 11/22/2023]
Abstract
BACKGROUND Understanding the role of adjuvants in pesticide persistence is crucial to develop effective pesticide formulations and manage pesticide residues in fresh produce. This study investigated the impact of a commercial non-ionic surfactant product containing alkylphenol ethoxylates (APEOs) on the persistence of thiabendazole on apple and spinach surfaces against the 30 kg m-3 baking soda (sodium bicarbonate, NaHCO3 ) soaking, which was used to remove the active ingredient (AI) in the cuticular wax layer of fresh produce through alkaline hydrolysis. Surface-enhanced Raman scattering (SERS) mapping method was used to quantify the residue levels on fresh produce surfaces at different experimental scenarios. Four standard curves were established to quantify surface thiabendazole in the absence and presence of APEOs, on apple and spinach leaf surfaces, respectively. RESULTS Overall, the result showed that APEOs enhanced the persistence of thiabendazole over time. After 3 days of exposure, APEOs increased thiabendazole surface residue against NaHCO3 hydrolysis on apple and spinach surfaces by 5.39% and 10.47%, respectively. CONCLUSION The study suggests that APEOs led to more pesticide residues on fresh produce and greater difficulty in washing them off from the surfaces using baking soda, posing food safety concerns. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Xinyi Du
- Department of Food Science, University of Massachusetts, Amherst, MA, USA
| | - Zili Gao
- Department of Food Science, University of Massachusetts, Amherst, MA, USA
| | - Lili He
- Department of Food Science, University of Massachusetts, Amherst, MA, USA
- Department of Chemistry, University of Massachusetts, Amherst, MA, USA
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2
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Du X, Gao Z, Yang T, Qu Y, He L. Understanding the impact of a non-ionic surfactant alkylphenol ethoxylate on surface-enhanced Raman spectroscopic analysis of pesticides on apple surfaces. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 301:122954. [PMID: 37270975 DOI: 10.1016/j.saa.2023.122954] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 05/11/2023] [Accepted: 05/29/2023] [Indexed: 06/06/2023]
Abstract
Pesticide active ingredients (AIs) are often applied with adjuvants to facilitate the stability and functionality of AIs in agricultural practice. The objective of this study is to investigate the role of a common non-ionic surfactant, alkylphenol ethoxylate (APEO), on the surface-enhanced Raman spectroscopic (SERS) analysis of pesticides as well as its impact on pesticide persistence on apple surfaces, as a model fresh produce surface. The wetted areas of two AIs (thiabendazole and phosmet) mixed with APEO were determined respectively to correct the unit concentration applied on apple surfaces for a fair comparison. SERS with gold nanoparticle (AuNP) mirror substrates was applied to measure the signal intensity of AIs with and without APEO on apple surfaces after a short-term (45 min) and a long-term (5 days) exposure. The limit of detection (LOD) of thiabendazole and phosmet using this SERS-based method were 0.861 ppm and 2.883 ppm, respectively. The result showed that APEO decreased the SERS signal for non-systemic phosmet, while increased SERS intensity of systemic thiabendazole on apple surfaces after 45 min pesticide exposure. After 5 days, the SERS intensity of thiabendazole with APEO was higher than thiabendazole alone, and there was no significant difference between phosmet with and without APEO. Possible mechanisms were discussed. Furthermore, a 1% sodium bicarbonate (NaHCO3) washing method was applied to test the impact of APEO on the persistence of the residues on apple surfaces after short-term and long-term exposures. The results indicated that APEO significantly enhanced the persistence of thiabendazole on plant surfaces after a 5-day exposure, while there was no significant impact on phosmet. The information obtained facilitates a better understanding of the impact of the non-ionic surfactant on SERS analysis of pesticide behavior on and in plants and helps further develop the SERS method for studying complex pesticide formulations in plant systems.
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Affiliation(s)
- Xinyi Du
- Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA
| | - Zili Gao
- Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA
| | - Tianxi Yang
- Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA
| | - Yanqi Qu
- Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA
| | - Lili He
- Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA; Department of Chemistry, University of Massachusetts, Amherst, MA 01003, USA.
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3
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Liu L, Ma W, Wang X, Li S. Recent Progress of Surface-Enhanced Raman Spectroscopy for Bacteria Detection. BIOSENSORS 2023; 13:350. [PMID: 36979564 PMCID: PMC10046079 DOI: 10.3390/bios13030350] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 02/28/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
There are various pathogenic bacteria in the surrounding living environment, which not only pose a great threat to human health but also bring huge losses to economic development. Conventional methods for bacteria detection are usually time-consuming, complicated and labor-intensive, and cannot meet the growing demands for on-site and rapid analyses. Sensitive, rapid and effective methods for pathogenic bacteria detection are necessary for environmental monitoring, food safety and infectious bacteria diagnosis. Recently, benefiting from its advantages of rapidity and high sensitivity, surface-enhanced Raman spectroscopy (SERS) has attracted significant attention in the field of bacteria detection and identification as well as drug susceptibility testing. Here, we comprehensively reviewed the latest advances in SERS technology in the field of bacteria analysis. Firstly, the mechanism of SERS detection and the fabrication of the SERS substrate were briefly introduced. Secondly, the label-free SERS applied for the identification of bacteria species was summarized in detail. Thirdly, various SERS tags for the high-sensitivity detection of bacteria were also discussed. Moreover, we emphasized the application prospects of microfluidic SERS chips in antimicrobial susceptibility testing (AST). In the end, we gave an outlook on the future development and trends of SERS in point-of-care diagnoses of bacterial infections.
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Affiliation(s)
- Lulu Liu
- College of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Wenrui Ma
- Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
- Key Disciplines Laboratory of Novel Micro-Nano Devices and System Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Xiang Wang
- Department of Mechanical Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Shunbo Li
- Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
- Key Disciplines Laboratory of Novel Micro-Nano Devices and System Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
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4
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Abstract
Aminoglycosides (AGs) are broad-spectrum antibiotics used in both human infection and animal medicine. The overuse of AGs causes undesirable residues in food, leading to serious health problems due to food chain accumulation. In recent years, various methods have been developed to determine AGs in food. Among these methods, fluorescent (FL), colorimetric and chemiluminescent (CL) optical methods possess advantages such as their simple instrumentation, low cost, simple operation, feasibility of realizing visualization, and smartphone imaging. This mini-review summarizes optical assays for the detection of AGs in food developed in recent years. The detection principles for different categories are discussed. Then, the amplification techniques for the ultrasensitive detection of AGs are introduced. We also discuss multiplex methods for the simultaneous detection of AGs. Finally, the challenges and future prospects are discussed in the Conclusions and Perspectives section.
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Anisovich MV, Shumskaya AE, Bundyukova VD, Yakimchuk DV, Kaniukov EY. Study of Safety of SiO2(Ag)–Si System by Cytoflourometric Method of Analysis of Reactive Oxygen Species and Cell Death in Culture. INTERNATIONAL JOURNAL OF NANOSCIENCE 2019. [DOI: 10.1142/s0219581x19400805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The potential ability of SiO2(Ag)–Si nanosystem to induce oxidative stress and death of human peripheral blood cells involving reactive oxygen species was studied using a double-color cytoflourometry method. This SiO2(Ag)–Si system with silver dendrites obtained via the metal deposition into the pores of SiO2 template on a silicon substrate was shown to increase the concentration of ROS but not cause the cell death associated with oxidative stress. Such systems are prospective for the analysis of biological substances with Raman scattering.
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Affiliation(s)
- M. V. Anisovich
- Republican Unitary Enterprise “Scientific Practical Centre of Hygiene”, Ministry of Health, Akademicheskaya Str. 8, 220012 Minsk, Belarus
| | - A. E. Shumskaya
- Scientific-Practical Materials Research Center, National Academy of Sciences of Belarus, P. Brovki Str. 19, 220072 Minsk, Belarus
| | - V. D. Bundyukova
- Scientific-Practical Materials Research Center, National Academy of Sciences of Belarus, P. Brovki Str. 19, 220072 Minsk, Belarus
| | - D. V. Yakimchuk
- Scientific-Practical Materials Research Center, National Academy of Sciences of Belarus, P. Brovki Str. 19, 220072 Minsk, Belarus
| | - E. Yu. Kaniukov
- Scientific-Practical Materials Research Center, National Academy of Sciences of Belarus, P. Brovki Str. 19, 220072 Minsk, Belarus
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6
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Li C, Fan P, Liang A, Jiang Z. Using Ca-doped carbon dots as catalyst to amplify signal to determine ultratrace thrombin by free-label aptamer-SERS method. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:1399-1406. [PMID: 30889674 DOI: 10.1016/j.msec.2019.02.080] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 02/11/2019] [Accepted: 02/21/2019] [Indexed: 10/27/2022]
Abstract
The highly catalytic Ca-doped carbon dots (CDCa) were prepared by microwave procedure, that exhibit strong catalytic effect on HAuCl4-glucose (GLC) reaction to form gold nanoparticles (AuNPs) with high SERS activity, using Victoria blue B (VBB) as a molecular probe. The SERS intensity at 1615 cm-1 increased linearly with CDCa increasing, due to formation of more AuNPs nanosol substrate as indicator. When thrombin aptamer (Apt) was added in this system, Apt adsorbed on the CDCa surface to inhibit theirs catalytic activity, and the SERS intensity decreased. However, when thrombin (TB) was present, it can bind to Apt to form stable G-duplex of Apt-TB and free CDCa catalyst in the system, and the SERS signal increased linearly. Thus a free-label Apt-SERS quantitative analysis method was developed for ultratrace TB, with a linear range of 0.0058-0.115 nmol/L and a detection limit of 0.0018 nmol/L TB.
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Affiliation(s)
- Chongning Li
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541004, China
| | - Peidi Fan
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541004, China
| | - Aihui Liang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541004, China.
| | - Zhiliang Jiang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin 541004, China.
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7
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Wu J, Fang J, Yang X, Wang C. Large-scale flexible metal-covered polymer nanopillar arrays as highly uniform and reproducible SERS substrates for trace analysis. NANOTECHNOLOGY 2018; 29:465701. [PMID: 30156187 DOI: 10.1088/1361-6528/aadd60] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
While surface-enhanced Raman scattering (SERS) spectroscopy has been studied extensively due to its sensitivity to molecular vibration states, the fabrication of SERS substrates with homogeneous activity over a large area still remains difficult. Here, a facial fabrication of large-scale metal-covered polymer nanopillar arrays used as reliable SERS substrates was developed by nano-pouring process using porous alumina membranes. Our strategy integrates the advantages of low-cost production, high reproducibility and good biocompatibility because the flexible transparent polymer nanopillars are nondestructive to biomaterial surfaces. The as-prepared SERS substrates exhibit highly uniform Raman signals with low relative standard deviation values of 4% at 1169 cm-1 of CV and 8.1% at 1355 cm-1 of R6G, both with the concentration of 10-5 M. The results also show that more than 95% intensity within the limits of the ±10% deviation of the average intensity of signals, indicating excellent stability of SERS signals. In addition, the mechanically flexible substrates can be attached to surfaces with complex morphologies and the good transparency makes the excitation and collection of signals from the backside of the substrates possible, showing great potential in analytical chemistry, food safety, medical diagnostics and other practical SERS detections.
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Affiliation(s)
- Jing Wu
- School of Science, Nantong University, No. 9, Seyuan Road, Nantong, Jiangsu 226019, People's Republic of China. Shanghai University, Department of Physics, Shanghai 200444, People's Republic of China
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8
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Shin D. Heterogeneous gap-mode nanostructure for surface-enhanced Raman spectroscopic evaluation of charge transfer between noble metal nanoparticles and formaldehyde vapor. NANOSCALE 2018; 10:19478-19483. [PMID: 30318551 DOI: 10.1039/c8nr06532b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Gap-mode nanostructures offer a reliable, scalable and controllable Raman substrate with high signal enhancement, and they are widely used in surface-enhanced Raman spectroscopy. Heterogeneous gap-mode structures composed of different types of nanoparticles with the underlying substrate have been studied only in terms of understanding the electromagnetic field enhancement mechanism up to now, just by focusing on the role of hot spot as enhancing the Raman signal itself. In this study, gold and platinum nanoparticle-based heterogeneous gap-mode structures were fabricated on gold surface, and used to evaluate minute changes in the surface charged state (surface potential) of the nanoparticle interacting with different organic vapors. By monitoring the surface-enhanced Raman signal change of isonitrile probes in the hot spot, it was revealed that gold and platinum nanoparticles show opposite directions of charge transfer over the same formaldehyde treatment. This strategy offers a new way to evaluate the charge transfer phenomenon between organic vapor and nanoparticles, which is especially important in catalytic application, using conventional surface-enhanced Raman spectroscopy.
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Affiliation(s)
- Dongha Shin
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
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9
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Mukanova Z, Gudun K, Elemessova Z, Khamkhash L, Ralchenko E, Bukasov R. Detection of Paracetamol in Water and Urea in Artificial Urine with Gold Nanoparticle@Al Foil Cost-efficient SERS Substrate. ANAL SCI 2018; 34:183-187. [PMID: 29434104 DOI: 10.2116/analsci.34.183] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We demonstrated that a cost-efficient, easy to prepare, hybrid SERS substrate-gold nanoparticles (AuNPs) on untreated Al foil (AlF) can effectively detect pharmaceuticals, such as paracetamol and clinical biomarkers, like urea in artificial urine. The limit of detection (LOD) for paracetamol on AuNPs on AlF is superior (0.1 vs. 1 mM ) to the LOD reported for SERS detection of paracetamol in the literature. For SERS detection of urea in urine, AuNPs on both Al foil and Au film performed much better than AuNPs on glass, in terms of the concentration range, linearity and LOD. However, assay on AuNPs on AlF showed a better semi-logarithmic trendline with R2 = 0.98 than an assay on AuNPs on Au film with R2 = 0.94. They have comparable sensitivity with LOD 0.024 and 0.017 M, respectively. The limit of quantification (LOQ) of the former is 0.026 M, which makes it sufficient for the quantification of urea in urine at both normal and pathophysiological (0.03 - 0.15 M) concentration.
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Affiliation(s)
- Zhansaya Mukanova
- Chemistry Department, School of Science and Technology, Nazarbayev University
| | - Kristina Gudun
- Chemistry Department, School of Science and Technology, Nazarbayev University
| | - Zarina Elemessova
- Chemistry Department, School of Science and Technology, Nazarbayev University
| | - Laura Khamkhash
- Chemistry Department, School of Science and Technology, Nazarbayev University
| | - Ekaterina Ralchenko
- Chemistry Department, School of Science and Technology, Nazarbayev University
| | - Rostislav Bukasov
- Chemistry Department, School of Science and Technology, Nazarbayev University
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10
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Szöke-Nagy T, Porav AS, Coman C, Cozar BI, Dina NE, Tripon C. Characterization of the Action of Antibiotics and Essential Oils against Bacteria by Surface-Enhanced Raman Spectroscopy and Scanning Electron Microscopy. ANAL LETT 2018. [DOI: 10.1080/00032719.2018.1430150] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Tiberiu Szöke-Nagy
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
- Faculty of Biology and Geology, Babeș-Bolyai University, Cluj-Napoca, Romania
| | - Alin Sebastian Porav
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
- Faculty of Biology and Geology, Babeș-Bolyai University, Cluj-Napoca, Romania
| | - Cristian Coman
- Branch of the National Institute of Research and Development for Biological Sciences Bucharest, Institute of Biological Research Cluj-Napoca, Cluj-Napoca, Romania
| | - Bogdan Ionut Cozar
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Nicoleta Elena Dina
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
| | - Carmen Tripon
- National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca, Romania
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11
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Simultaneous characterization of chemical structures and bioactivities of citrus-derived components using SERS barcodes. Food Chem 2018; 240:743-750. [DOI: 10.1016/j.foodchem.2017.07.103] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 06/29/2017] [Accepted: 07/24/2017] [Indexed: 12/18/2022]
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12
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Inagaki M, Motobayashi K, Ikeda K. Electrochemical THz-SERS Observation of Thiol Monolayers on Au(111) and (100) Using Nanoparticle-assisted Gap-Mode Plasmon Excitation. J Phys Chem Lett 2017; 8:4236-4240. [PMID: 28830138 DOI: 10.1021/acs.jpclett.7b01901] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Surface-enhanced Raman scattering (SERS) microscopy using nanoparticle-assisted gap-mode plasmon excitation, which enables us to observe an atomically defined planar metal surface, was combined with THz-Raman spectroscopy to observe ultra-low-frequency vibration modes under electrochemical conditions. This combination helps us to gain deeper insights into electrode/electrolyte interfaces via direct observation of extramolecular vibrations including information on intermolecular and substrate/molecule interactions. Electrochemical reductive desorption of benzenethiol derivatives from Au(111) and (100) was monitored to demonstrate the power of this spectroscopy. Structural differences of the monolayers between these surfaces were seen only in the extramolecular vibration modes such as a large-amplitude hinge-bending motion of the phenyl ring. On the Au(111), where hollow-site and bridge-site adsorption coexisted, the electrochemical reductive desorption was preferentially induced at the hollow sites.
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Affiliation(s)
- Motoharu Inagaki
- Department of Physical Science and Engineering, Nagoya Institute of Technology , Nagoya 466-8555, Japan
| | - Kenta Motobayashi
- Department of Physical Science and Engineering, Nagoya Institute of Technology , Nagoya 466-8555, Japan
| | - Katsuyoshi Ikeda
- Department of Physical Science and Engineering, Nagoya Institute of Technology , Nagoya 466-8555, Japan
- Frontier Research Institute for Materials Science (FRIMS), Nagoya Institute of Technology , Nagoya 466-8555, Japan
- Global Research Center for Environment and Energy based on Nanomaterials Science (GREEN), National Institute for Materials Science (NIMS) , Tsukuba 305-0044, Japan
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13
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Electrochemical SERS observation of molecular adsorbates on Ru/Pt-modified Au(111) surfaces using sphere-plane type gap-mode plasmon excitation. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2016.11.046] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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14
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Sukmanee T, Wongravee K, Ekgasit S, Thammacharoen C, Pienpinijtham P. Facile and Sensitive Detection of Carbofuran Carbamate Pesticide in Rice and Soybean Using Coupling Reaction-based Surface-Enhanced Raman Scattering. ANAL SCI 2017; 33:89-94. [PMID: 28070083 DOI: 10.2116/analsci.33.89] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 11/10/2016] [Indexed: 12/16/2023]
Abstract
In this research, a sensitive and selective method for detecting one of the most toxic insecticides, "carbofuran", in rice and soybean is presented. This method is based on the coupling reaction of diazonium ion combined with a surface-enhanced Raman scattering technique. Diazonium ion produced from p-aminothiophenol reacts specifically with carbofuran phenol from the hydrolysis of carbofuran. The generated azo compounds attach to the surface of silver nanoparticles via the Ag-S bond. Therefore, a strong Raman intensity can be obtained. The concentration of carbofuran can be determined by following the intensity of the peak at 1201 cm-1, attributed to the C-N stretching vibration of the azo compound. The result shows a good linear correlation (R2 = 0.9786) against carbofuran concentrations (0.1 - 5 ppm) with a detection limit of 0.452 ppm. Our proposed protocol is insignificantly influenced by various common interferences. Moreover, this method has been successfully validated to determine carbofuran concentrations in rice and soybean with detection limits of 0.446 and 0.520 ppm, respectively.
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Affiliation(s)
- Thanyada Sukmanee
- Sensor Research Unit (SRU), Department of Chemistry, Faculty of Science, Chulalongkorn University
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15
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Bandarenka HV, Girel KV, Bondarenko VP, Khodasevich IA, Panarin AY, Terekhov SN. Formation Regularities of Plasmonic Silver Nanostructures on Porous Silicon for Effective Surface-Enhanced Raman Scattering. NANOSCALE RESEARCH LETTERS 2016; 11:262. [PMID: 27209406 PMCID: PMC4875914 DOI: 10.1186/s11671-016-1473-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 05/09/2016] [Indexed: 05/30/2023]
Abstract
Plasmonic nanostructures demonstrating an activity in the surface-enhanced Raman scattering (SERS) spectroscopy have been fabricated by an immersion deposition of silver nanoparticles from silver salt solution on mesoporous silicon (meso-PS). The SERS signal intensity has been found to follow the periodical repacking of the silver nanoparticles, which grow according to the Volmer-Weber mechanism. The ratio of silver salt concentration and immersion time substantially manages the SERS intensity. It has been established that optimal conditions of nanostructured silver layers formation for a maximal Raman enhancement can be chosen taking into account a special parameter called effective time: a product of the silver salt concentration on the immersion deposition time. The detection limit for porphyrin molecules CuTMPyP4 adsorbed on the silvered PS has been evaluated as 10(-11) M.
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Affiliation(s)
- Hanna V Bandarenka
- Laboratory of Materials and Structures of Nanoelectronics, Belarusian State University of Informatics and Radioelectronics, 6 Brovka st., Minsk, 220013, Belarus.
| | - Kseniya V Girel
- Laboratory of Materials and Structures of Nanoelectronics, Belarusian State University of Informatics and Radioelectronics, 6 Brovka st., Minsk, 220013, Belarus
| | - Vitaly P Bondarenko
- Laboratory of Materials and Structures of Nanoelectronics, Belarusian State University of Informatics and Radioelectronics, 6 Brovka st., Minsk, 220013, Belarus
| | - Inna A Khodasevich
- B.I. Stepanov Institute of Physics of National Academy of Sciences of Belarus, 68 Nezalezhnasti av., Minsk, 220072, Belarus
| | - Andrei Yu Panarin
- B.I. Stepanov Institute of Physics of National Academy of Sciences of Belarus, 68 Nezalezhnasti av., Minsk, 220072, Belarus
| | - Sergei N Terekhov
- B.I. Stepanov Institute of Physics of National Academy of Sciences of Belarus, 68 Nezalezhnasti av., Minsk, 220072, Belarus
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16
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Kogermann K, Putrinš M, Tenson T. Single-cell level methods for studying the effect of antibiotics on bacteria during infection. Eur J Pharm Sci 2016; 95:2-16. [PMID: 27577009 DOI: 10.1016/j.ejps.2016.08.042] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 08/17/2016] [Accepted: 08/23/2016] [Indexed: 12/11/2022]
Abstract
Considerable evidence about phenotypic heterogeneity among bacteria during infection has accumulated during recent years. This heterogeneity has to be considered if the mechanisms of infection and antibiotic action are to be understood, so we need to implement existing and find novel methods to monitor the effects of antibiotics on bacteria at the single-cell level. This review provides an overview of methods by which this aim can be achieved. Fluorescence label-based methods and Raman scattering as a label-free approach are discussed in particular detail. Other label-free methods that can provide single-cell level information, such as impedance spectroscopy and surface plasmon resonance, are briefly summarized. The advantages and disadvantages of these different methods are discussed in light of a challenging in vivo environment.
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Affiliation(s)
- Karin Kogermann
- Institute of Pharmacy, University of Tartu, Nooruse 1, 50411 Tartu, Estonia.
| | - Marta Putrinš
- Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia.
| | - Tanel Tenson
- Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia.
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17
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Bai P, Wang J, Yin H, Tian Y, Yao W, Gao J. Discrimination of Human and Nonhuman Blood by Raman Spectroscopy and Partial Least Squares Discriminant Analysis. ANAL LETT 2016. [DOI: 10.1080/00032719.2016.1176033] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Pengli Bai
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Jun Wang
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Huancai Yin
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Yubing Tian
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Wenming Yao
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Jing Gao
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
- CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
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18
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Kim W, Kim N, Lee E, Kim D, Hwan Kim Z, Won Park J. A tunable Au core–Ag shell nanoparticle tip for tip-enhanced spectroscopy. Analyst 2016; 141:5066-70. [DOI: 10.1039/c6an00035e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A single Au nanoparticle (NP) with a diameter of 5 nm was transferred to the end of a Si-tip through a picking process, and an Ag shell with a controlled thickness was formed on the Au core.
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Affiliation(s)
- Woong Kim
- Department of Chemistry
- Pohang University of Science and Technology
- Pohang
- Republic of Korea
| | - Nara Kim
- Department of Chemistry
- Seoul National University
- Seoul 151-742
- Korea
| | - Eunbyoul Lee
- Department of Chemistry
- Korea University
- Seoul 136-701
- Korea
| | - Duckhoe Kim
- Department of Chemistry
- Pohang University of Science and Technology
- Pohang
- Republic of Korea
| | - Zee Hwan Kim
- Department of Chemistry
- Seoul National University
- Seoul 151-742
- Korea
| | - Joon Won Park
- Department of Chemistry
- Pohang University of Science and Technology
- Pohang
- Republic of Korea
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19
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Hu J, Hoshi N, Uosaki K, Ikeda K. Vibrational Spectroscopic Observation of Atomic-Scale Local Surface Sites Using Site-Selective Signal Enhancement. NANO LETTERS 2015; 15:7982-7986. [PMID: 26551000 DOI: 10.1021/acs.nanolett.5b03093] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Molecule-substrate interactions are sensitively affected by atomic-scale surface structures. Unique activity in heterogeneous catalysts or electrocatalysts is often related with local surface sites with specific structures. We demonstrate that adsorption geometry of a model molecule with an isocyanide anchor is drastically varied among one-fold atop, two-fold bridge, and three-fold hollow configurations with increasing the size of atomic-scale local surface sites of Pd islands on an Au(111) model surface. The vibrational spectroscopic observation of such local information is realized by site-selective and self-assembled formation of hotspots, where Raman scattering intensity is significantly enhanced via excitation of localized surface plasmons.
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Affiliation(s)
- Jian Hu
- Division of Chemistry, Graduate School of Science, Hokkaido University , Sapporo 060-0810, Japan
- Global Research Center for Environment and Energy Based on Nanomaterials Science (GREEN), National Institute for Materials Science (NIMS) , Tsukuba 305-0044, Japan
| | - Nagahiro Hoshi
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University , Yayoi-cho 1-33, Inage-ku, Chiba 263-8522, Japan
| | - Kohei Uosaki
- Global Research Center for Environment and Energy Based on Nanomaterials Science (GREEN), National Institute for Materials Science (NIMS) , Tsukuba 305-0044, Japan
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS) , Tsukuba 305-0044, Japan
| | - Katsuyoshi Ikeda
- Division of Chemistry, Graduate School of Science, Hokkaido University , Sapporo 060-0810, Japan
- Global Research Center for Environment and Energy Based on Nanomaterials Science (GREEN), National Institute for Materials Science (NIMS) , Tsukuba 305-0044, Japan
- Japan Science and Technology Agency, PRESTO , 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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20
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Guo H, Zhang Z, Xing B, Mukherjee A, Musante C, White JC, He L. Analysis of silver nanoparticles in antimicrobial products using surface-enhanced Raman spectroscopy (SERS). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:4317-24. [PMID: 25775209 DOI: 10.1021/acs.est.5b00370] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Silver nanoparticles (AgNPs) are the most commonly used nanoparticles in consumer products. Concerns over human exposure to and risk from these particles have resulted in increased interest in novel strategies to detect AgNPs. This study investigated the feasibility of surface-enhanced Raman spectroscopy (SERS) as a method for the detection and quantification of AgNPs in antimicrobial products. By using ferbam (ferric dimethyl-dithiocarbamate) as an indicator molecule that binds strongly onto the nanoparticles, AgNPs detection and discrimination were achieved based on the signature SERS response of AgNPs-ferbam complexes. SERS response with ferbam was distinct for silver ions, silver chloride, silver bulk particles, and AgNPs. Two types of AgNPs with different coatings, citrate and polyvinylpirrolidone (PVP), both showed strong interactions with ferbam and induced strong SERS signals. SERS was effectively applicable for detecting Ag particles ranging from 20 to 200 nm, with the highest signal intensity in the 60-100 nm range. A linear relationship (R(2) = 0.9804) between Raman intensity and citrate-AgNPs concentrations (60 nm; 0-20 mg/L) indicates the potential for particle quantification. We also evaluated SERS detection of AgNPs in four commercially available antimicrobial products. Combined with ICP-MS and TEM data, the results indicated that the SERS response is primarily dependent on size, but also affected by AgNPs concentration. The findings demonstrate that SERS is a promising analytical platform for studying environmentally relevant levels of AgNPs in consumer products and related matrices.
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Affiliation(s)
- Huiyuan Guo
- †Stockbridge School of Agriculture, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Zhiyun Zhang
- ‡Department of Food Science, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Baoshan Xing
- †Stockbridge School of Agriculture, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Arnab Mukherjee
- §Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, New Haven, Connecticut 06511, United States
| | - Craig Musante
- §Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, New Haven, Connecticut 06511, United States
| | - Jason C White
- §Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, New Haven, Connecticut 06511, United States
| | - Lili He
- ‡Department of Food Science, University of Massachusetts, Amherst, Massachusetts 01003, United States
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21
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He S, Xie W, Zhang W, Zhang L, Wang Y, Liu X, Liu Y, Du C. Multivariate qualitative analysis of banned additives in food safety using surface enhanced Raman scattering spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 137:1092-1099. [PMID: 25300041 DOI: 10.1016/j.saa.2014.08.134] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 08/11/2014] [Accepted: 08/31/2014] [Indexed: 06/04/2023]
Abstract
A novel strategy which combines iteratively cubic spline fitting baseline correction method with discriminant partial least squares qualitative analysis is employed to analyze the surface enhanced Raman scattering (SERS) spectroscopy of banned food additives, such as Sudan I dye and Rhodamine B in food, Malachite green residues in aquaculture fish. Multivariate qualitative analysis methods, using the combination of spectra preprocessing iteratively cubic spline fitting (ICSF) baseline correction with principal component analysis (PCA) and discriminant partial least squares (DPLS) classification respectively, are applied to investigate the effectiveness of SERS spectroscopy for predicting the class assignments of unknown banned food additives. PCA cannot be used to predict the class assignments of unknown samples. However, the DPLS classification can discriminate the class assignment of unknown banned additives using the information of differences in relative intensities. The results demonstrate that SERS spectroscopy combined with ICSF baseline correction method and exploratory analysis methodology DPLS classification can be potentially used for distinguishing the banned food additives in field of food safety.
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Affiliation(s)
- Shixuan He
- Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China
| | - Wanyi Xie
- Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China
| | - Wei Zhang
- Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China.
| | - Liqun Zhang
- Department of Clinical Laboratory, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, PR China
| | - Yunxia Wang
- Department of Laboratory Medicine, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China
| | - Xiaoling Liu
- Chongqing Academy of Chinese Meteria Medica, Chongqing 400065, PR China
| | - Yulong Liu
- Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China
| | - Chunlei Du
- Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, PR China
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22
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Ikeda K. ELECTROCHEMISTRY 2015; 83:112-115. [DOI: 10.5796/electrochemistry.83.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] Open
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23
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Terekhov SN, Kachan SM, Panarin AY, Mojzes P. Surface-enhanced Raman scattering on silvered porous alumina templates: role of multipolar surface plasmon resonant modes. Phys Chem Chem Phys 2015; 17:31780-9. [DOI: 10.1039/c5cp04197j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Nanostructured silver films with different thicknesses were prepared by vapor deposition onto the surface of the anodic aluminum oxide (AAO) template to be used as surface-enhanced Raman scattering (SERS) active substrates.
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Affiliation(s)
| | - S. M. Kachan
- Department of Information Technologies and Robotics
- Belarusian National Technical University
- 220013 Minsk
- Belarus
| | | | - P. Mojzes
- Institute of Physics
- Charles University in Prague
- CZ-121 16 Prague 2
- Czech Republic
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24
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Penido CAFO, Pacheco MTT, Zângaro RA, Silveira L. Identification of Different Forms of Cocaine and Substances Used in Adulteration Using Near-infrared Raman Spectroscopy and Infrared Absorption Spectroscopy. J Forensic Sci 2014; 60:171-8. [DOI: 10.1111/1556-4029.12666] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 09/25/2013] [Accepted: 11/23/2013] [Indexed: 12/01/2022]
Affiliation(s)
- Ciro A. F. O. Penido
- Biomedical Engineering Institute; Universidade Camilo Castelo Branco - UNICASTELO; Parque Tecnológico de São José dos Campos; Estrada Dr. Altino Bondesan, 500, Eugênio de Melo São José dos Campos SP 12247-016 Brazil
| | - Marcos Tadeu T. Pacheco
- Biomedical Engineering Institute; Universidade Camilo Castelo Branco - UNICASTELO; Parque Tecnológico de São José dos Campos; Estrada Dr. Altino Bondesan, 500, Eugênio de Melo São José dos Campos SP 12247-016 Brazil
| | - Renato A. Zângaro
- Biomedical Engineering Institute; Universidade Camilo Castelo Branco - UNICASTELO; Parque Tecnológico de São José dos Campos; Estrada Dr. Altino Bondesan, 500, Eugênio de Melo São José dos Campos SP 12247-016 Brazil
| | - Landulfo Silveira
- Biomedical Engineering Institute; Universidade Camilo Castelo Branco - UNICASTELO; Parque Tecnológico de São José dos Campos; Estrada Dr. Altino Bondesan, 500, Eugênio de Melo São José dos Campos SP 12247-016 Brazil
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25
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Zheng J, Pang S, Labuza TP, He L. Evaluation of surface-enhanced Raman scattering detection using a handheld and a bench-top Raman spectrometer: a comparative study. Talanta 2014; 129:79-85. [PMID: 25127567 DOI: 10.1016/j.talanta.2014.05.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Revised: 05/09/2014] [Accepted: 05/12/2014] [Indexed: 10/25/2022]
Abstract
Surface enhanced Raman scattering (SERS) detection using a handheld Raman spectrometer and a bench-top Raman spectrometer was systemically evaluated and compared in this study. Silver dendrites were used as the SERS substrate, and two pesticides, maneb and pyrrolidine dithiocarbamate-ammonium salt (PDCA) were used as the analytes. Capacity and performance were evaluated based on spectral resolution, signal variation, quantitative capacity, sensitivity, flexibility and intelligence for SERS detection. The results showed that the handheld Raman spectrometer had better data consistency, more accurate quantification capacity, as well as the capacity of on-site and intelligence for qualitative and semi-quantitative analysis. On the other hand, the bench-top Raman spectrometer showed about 10 times higher sensitivity, as well as flexibility for optimization of the SERS measurements under different parameters such as laser power output, collective time, and objective magnification. The study on the optimization of SERS measurements on a bench-top spectrometer provides a useful guide for designing a handheld Raman spectrometer, specifically for SERS detection. This evaluation can advance the application of a handheld Raman spectrometer for the on-site measurement of trace amounts of pesticides or other chemicals.
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Affiliation(s)
- Jinkai Zheng
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, United States; Institute of Agro-Products Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193,PR China
| | - Shintaro Pang
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, United States
| | - Theodore P Labuza
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN 55108, United States
| | - Lili He
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, United States.
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26
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Zheng J, He L. Surface-Enhanced Raman Spectroscopy for the Chemical Analysis of Food. Compr Rev Food Sci Food Saf 2014; 13:317-328. [DOI: 10.1111/1541-4337.12062] [Citation(s) in RCA: 243] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Accepted: 01/21/2014] [Indexed: 01/12/2023]
Affiliation(s)
- Jinkai Zheng
- Dept. of Food Science; Univ. of Massachusetts; Amherst MA 01003 U.S.A
- Inst. of Agro-products Processing Science and Technology; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - Lili He
- Dept. of Food Science; Univ. of Massachusetts; Amherst MA 01003 U.S.A
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27
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Ikeda K, Suzuki S, Uosaki K. Enhancement of SERS background through charge transfer resonances on single crystal gold surfaces of various orientations. J Am Chem Soc 2013; 135:17387-92. [PMID: 24160263 DOI: 10.1021/ja407459t] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Surface-enhanced Raman scattering (SERS) spectra are accompanied by broad background emission, which limits improvements in the signal-to-noise ratio. Despite the close correlation between the background generation and the SERS enhancement, the chemical origin of the background emission has remained somewhat mysterious. In this work, SERS spectra of organic monolayers are systematically measured on an atomically defined single crystalline gold surface of various orientations, which specifically define metal-molecule chemical interactions. The use of sphere-plane type plasmonic nanogap structures on a well-defined surface enables us to evaluate the contribution of charge transfer resonances to SERS enhancement. The present results not only reveal that charge transfer resonance at metal-molecule interfaces increases the intensity of plasmon-mediated broadband emission but also provide us a consistent view about electronic structures of metal-molecule interfaces.
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Affiliation(s)
- Katsuyoshi Ikeda
- Division of Chemistry, Graduate School of Science, Hokkaido University , Sapporo 060-0810, Japan
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28
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Yang F, Wang Q, Gu Z, Fang K, Marriott G, Gu N. Silver nanoparticle-embedded microbubble as a dual-mode ultrasound and optical imaging probe. ACS APPLIED MATERIALS & INTERFACES 2013; 5:9217-23. [PMID: 23988030 DOI: 10.1021/am4029747] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Microbubbles (MBs) coupled with nanoparticles represent a new class of multifunctional probe for multiscale biomedical imaging and drug delivery. In this study, we describe the development of multifunctional, microscale microbubble probes that are composed of a nitrogen gas core and a biocompatible polymer shell harboring silver nanoparticles (AgNPs). Ultrasound imaging studies show that the presence of AgNPs in the MB significantly improves the contrast of ultrasound images. The AgNPs within individual MB can be also imaged by using dark-field microscopy (DFM), which suggests that AgNPs in the polymer shell adopt multiple structural forms. AgNPs are released from the polymer shell following a brief exposure to an ultrasonic field and are subsequently taken up by living cells. AgNPs within labeled cells are imaged by DFM, while surface-enhanced Raman scattering is used to identify specific cytoplasmic biomolecules that bind to the surface of the AgNP. Collectively, these studies demonstrate the application of multifunctional MBs for micrometer scale contrast-enhanced ultrasound imaging, as vehicles for the ultrasound-based delivery of optical probes and drugs to cells, and for imaging of chemical sensing of individual nanopartiles within cells and tissue.
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Affiliation(s)
- Fang Yang
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University , Nanjing 210096, P. R. China
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29
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Malic L, Morton K, Clime L, Veres T. All-thermoplastic nanoplasmonic microfluidic device for transmission SPR biosensing. LAB ON A CHIP 2013; 13:798-810. [PMID: 23287840 DOI: 10.1039/c2lc41123g] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Early and accurate disease diagnosis still remains a major challenge in clinical settings. Biomarkers could potentially provide useful tools for the detection and monitoring of disease progression, treatment safety and efficacy. Recent years have witnessed prodigious advancement in biosensor development with research directed towards rapid, real-time, label-free and sensitive biomarker detection. Among emerging techniques, nanoplasmonic biosensors pose tremendous potential to accelerate clinical diagnosis with real-time multiplexed analysis, rapid and miniaturized assays, low sample consumption and high sensitivity. In order to translate these technologies from the proof-of-principle concept level to point of care clinical diagnosis, integrated, portable devices having small footprint cartridges that house low-cost disposable consumables are sought. Towards this goal, we developed an all-polymeric nanoplasmonic microfluidic (NMF) transmission surface plasmon resonance (SPR) biosensor. The device was fabricated in thermoplastics using a simple, single step and cost-effective hot embossing technique amenable to mass production. The novel 3D hierarchical mold fabrication process enabled monolithic integration of blazed nanogratings within the detection chambers of a multichannel microfluidic system. Consequently, a single hard thermoplastic bottom substrate comprising plasmonic and fluidic features allowed integration of active fluidic elements, such as pneumatic valves, in the top soft thermoplastic cover, increasing device functionality. A simple and compact transmission-based optical setup was employed with multiplexed end-point or dual-channel kinetic detection capability which did not require stringent angular accuracy. The sensitivity, specificity and reproducibility of the transmission SPR biosensor was demonstrated through label-free immunodetection of soluble cell-surface glycoprotein sCD44 at clinically relevant picomolar to nanomolar concentrations.
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Affiliation(s)
- Lidija Malic
- National Research Council Canada, Boucherville, QC, Canada
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30
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Nishi H, Asahi T, Kobatake S. Plasmonic Enhancement of a Photocycloreversion Reaction of a Diarylethene Derivative Using Individually Dispersed Silver Nanoparticles. Chemphyschem 2012; 13:3616-21. [DOI: 10.1002/cphc.201200442] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Indexed: 11/07/2022]
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31
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Nishi H, Asahi T, Kobatake S. Plasmonic enhancement of gold nanoparticles on photocycloreversion reaction of diarylethene derivatives depending on particle size, distance from the particle surface, and irradiation wavelength. Phys Chem Chem Phys 2012; 14:4898-905. [DOI: 10.1039/c2cp23820a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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