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Huang Q, Gong H, Wang G, Hu W, Wang W, Pan S, Xu J, Liu G, Tian Z. Positively Charged Silver and Gold Nanoparticles with Controllable Size Distribution for SERS Detection of Negatively Charged Molecules. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:1305-1315. [PMID: 38164750 DOI: 10.1021/acs.langmuir.3c02846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Surface-enhanced Raman spectroscopy (SERS) has been demonstrated as an ultrasensitive tool for various molecules. However, for the negatively charged molecules, the widely used SERS substrate [negatively charged Ag and Au nanoparticles (Ag or Au NPs (-)] showed either low sensitivity or poor stability. The best solution is to synthesize positively charged silver or gold nanoparticles [Ag or Au NPs (+)] with high stability and excellent SERS performance, which are currently unavailable. To this end, we revitalized the strategy of "charge reversal and seed growth". By selection of ascorbic acid as the reductant and surfactant, the surface charge of Ag or Au NP (-) seeds is adjusted to a balanced state, where the surface charge is negative enough to satisfy the stabilization of the NPs (-) but does not hinder the subsequent charge reversal. By optimization of the chain length and electric charge of polyamine molecules, the highly stable and size-controllable uniform Ag NPs (+) and Au NPs (+) were seed-growth synthesized with high reproducibility. More importantly, the SERS performance of both Ag NPs (+) and Au NPs (+) achieved the trace detection of negatively charged molecules at the level of 1 μg/L, demonstrating an improved SERS sensitivity of up to 3 orders of magnitude compared to the previously reported sensitivity. Promisingly, the introduction of polyamine-capped Ag NPs (+) and Au NPs (+) as SERS substrates with high stability (1 year shelf life) will significantly broaden the application of SERS.
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Affiliation(s)
- Qiuting Huang
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Hongbo Gong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Guoqiang Wang
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Weiye Hu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Weili Wang
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Siqi Pan
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Jing Xu
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Guokun Liu
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Zhongqun Tian
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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Molnár C, Drigla TD, Barbu-Tudoran L, Bajama I, Curean V, Cîntă Pînzaru S. Pilot SERS Monitoring Study of Two Natural Hypersaline Lake Waters from a Balneary Resort during Winter-Months Period. BIOSENSORS 2023; 14:19. [PMID: 38248396 PMCID: PMC10813592 DOI: 10.3390/bios14010019] [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: 11/03/2023] [Revised: 12/13/2023] [Accepted: 12/26/2023] [Indexed: 01/23/2024]
Abstract
Water samples from two naturally hypersaline lakes, renowned for their balneotherapeutic properties, were investigated through a pilot SERS monitoring program. Nanotechnology-based techniques were employed to periodically measure the ultra-sensitive SERS molecular characteristics of the raw water-bearing microbial community and the inorganic content. Employing the Pearson correlation coefficient revealed a robust linear relationship between electrical conductivity and pH and Raman and SERS spectral data of water samples, highlighting the interplay complexity of Raman/SERS signals and physicochemical parameters within each lake. The SERS data obtained from raw waters with AgNPs exhibited a dominant, reproducible SERS feature resembling adsorbed β-carotene at submicromole concentration, which could be related to the cyanobacteria-AgNPs interface and supported by TEM analyses. Notably, spurious SERS sampling cases showed molecular traces attributed to additional metabolites, suggesting multiplexed SERS signatures. The conducted PCA demonstrated observable differences in the β-carotene SERS band intensities between the two lakes, signifying potential variations in picoplankton abundance and composition or environmental influences. Moreover, the study examined variations in the SERS intensity ratio I245/I1512, related to the balance between inorganic (Cl--induced AgNPs aggregation) and organic (cyanobacteria population) balance, in correlation with the electrical conductivity. These findings signify the potential of SERS data for monitoring variations in microorganism concentration, clearly dependent on ion concentration and nutrient dynamics in raw, hypersaline water bodies.
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Affiliation(s)
- Csilla Molnár
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donath, 400293 Cluj-Napoca, Romania
- Biomolecular Physics Department, Babeş-Bolyai University, Kogălniceanu 1, 400084 Cluj Napoca, Romania; (T.D.D.); (I.B.)
| | - Teodora Diana Drigla
- Biomolecular Physics Department, Babeş-Bolyai University, Kogălniceanu 1, 400084 Cluj Napoca, Romania; (T.D.D.); (I.B.)
| | - Lucian Barbu-Tudoran
- Electron Microscopy Centre, Babeș-Bolyai University, Clinicilor 5-7, 400006 Cluj-Napoca, Romania;
| | - Ilirjana Bajama
- Biomolecular Physics Department, Babeş-Bolyai University, Kogălniceanu 1, 400084 Cluj Napoca, Romania; (T.D.D.); (I.B.)
| | - Victor Curean
- Faculty of Pharmacy, “Iuliu Hatieganu” University of Medicine and Pharmacy, Victor Babes 8, 400347 Cluj-Napoca, Romania;
| | - Simona Cîntă Pînzaru
- Biomolecular Physics Department, Babeş-Bolyai University, Kogălniceanu 1, 400084 Cluj Napoca, Romania; (T.D.D.); (I.B.)
- Institute for Research, Development and Innovation in Applied Natural Sciences, Babes-Bolyai University, Fantanele 30, 400327 Cluj-Napoca, Romania
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3
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Li C, Zhang Y, Ye Z, Bell SEJ, Xu Y. Combining surface-accessible Ag and Au colloidal nanomaterials with SERS for in situ analysis of molecule-metal interactions in complex solution environments. Nat Protoc 2023; 18:2717-2744. [PMID: 37495750 DOI: 10.1038/s41596-023-00851-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 05/03/2023] [Indexed: 07/28/2023]
Abstract
The interactions between molecules and noble metal nanosurfaces play a central role in many areas of nanotechnology. The surface chemistry of noble metal surfaces under ideal, clean conditions has been extensively studied; however, clean conditions are seldom met in real-world applications. We developed a sensitive and robust characterization technique for probing the surface chemistry of nanomaterials in the complex environments that are directly relevant to their applications. Surface-enhanced Raman spectroscopy (SERS) can be used to probe the interaction of plasmonic nanoparticles with light to enhance the Raman signals of molecules near the surface of nanoparticles. Here, we explain how to couple SERS with surface-accessible plasmonic-enhancing substrates, which are capped with weakly adsorbing capping ligands such as citrate and chloride ions, to allow molecule-metal interactions to be probed in situ and in real time, thus providing information on the surface orientation and the formation and breaking of chemical bonds. The procedure covers the synthesis and characterization of surface-accessible colloids, the preliminary SERS screening with agglomerated colloids, the synthesis and characterization of interfacial nanoparticle assemblies, termed metal liquid-like films, and the in situ biphasic SERS analysis with metal liquid-like films. The applications of the approach are illustrated using two examples: the probing of π-metal interactions and that of target/ligand-particle interactions on hollow bimetallic nanostars. This protocol, from the initial synthesis of the surface-accessible plasmonic nanoparticles to the final in situ biphasic SERS analysis, requires ~14 h and is ideally suited to users with basic knowledge in performing Raman spectroscopy and wet synthesis of metal nanoparticles.
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Affiliation(s)
- Chunchun Li
- School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, UK
- Institute of Photochemistry and Photofunctional Materials, University of Shanghai for Science and Technology, Shanghai, China
| | - Yingrui Zhang
- School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, UK
| | - Ziwei Ye
- Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, China
| | - Steven E J Bell
- School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, UK.
| | - Yikai Xu
- School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, UK.
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Shanghai, China.
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4
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Bi S, Yuan Y, Zhang F, Wang Y, Liu J, Yang B, Song D. A sensitive surface-enhanced Raman spectroscopy detection for gentamicin and tobramycin using γ-Al 2O 3-modified silver nanoparticles coated with bovine serum albumin as substrate. Talanta 2023; 260:124635. [PMID: 37167676 DOI: 10.1016/j.talanta.2023.124635] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/07/2023] [Accepted: 05/02/2023] [Indexed: 05/13/2023]
Abstract
Two aminoglycoside antibiotics (AGs), gentamicin (GEN) and tobramycin (TOB), have good antibacterial activity against most pseudomonas aeruginosa and staphylococcus. The molecular structure of these drugs lack chromogenic groups, which brings challenges to their detection. In this project, the detecting methods for GEN and TOB utilizing surface-enhanced Raman spectroscopy (SERS) based on γ-Al2O3-modified silver nanoparticles (AgNPs) coated with bovine serum albumin (BSA) were established. The enhancement factors (EFs) of GEN and TOB were 2.44 × 105 and 2.67 × 106, respectively. The transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and spectrophotometric techniques were used to characterize the substrate and the combination of the substance with drugs. The pH, the addition amounts for the substrate and coagulant, as well as the mixing time were optimized. On the basis of single factor experiments, a more scientific response surface model was established. The concentrations of GEN and TOB showed good linear relationships with their Raman signals in the ranges of 6.67 × 10-8 - 2.00 × 10-6 and 6.67 × 10-9 - 3.00 × 10-7 mol L-1 respectively. The limits of detection (LODs) were 11.88 and 1.26 nmol L-1 for GEN and TOB, respectively. The methods were used successfully for the samples determination of the two AGs in commercial drugs and meat products.
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Affiliation(s)
- Shuyun Bi
- College of Chemistry, Changchun Normal University, Changchun, 130032, China.
| | - Yue Yuan
- College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Fengming Zhang
- College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Yuting Wang
- College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Jia Liu
- College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Bin Yang
- College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Daqian Song
- College of Chemistry, Jilin University, Changchun, 130012, China
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5
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Yuan Y, Bi S, Zhang F, Wang Y, Yang B, Ren Z, Li X. Rapid determination of isepamicin by using SERS based on BSA-protected AgNPs modified by α-Fe 2O 3. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 285:121942. [PMID: 36209715 DOI: 10.1016/j.saa.2022.121942] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 09/24/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
A surface-enhanced Raman spectroscopy (SERS) method for the determination of isepamicin (ISE) using silver nanoparticles (AgNPs) protected by bovine serum albumin (BSA) and modified by α-Fe2O3 as an efficient substrate was established. The synthesized substrate was characterized and verified by transmission electron microscopy (TEM), ultraviolet visible spectroscopy (UV-vis), and fourier transform infrared spectroscopy (FT-IR). The conditions affecting the Raman signal of ISE were optimized by single factor and response surface experiments. Under optimized conditions, a standard curve ISERS = 43.08c + 63598.69 (c: nmol/L) with a linear relationship (r = 0.9976) was established between the SERS intensity and ISE concentration in the range of 20.00 - 2000.00 nmol/L. The limit of detection (LOD) for ISE was 16.58 nmol/L (S/N = 3). The recovery of ISE in the samples was 96.29 % - 104.12 %, with relative standard deviation (RSD) was 1.53 % - 3.43 % (n = 5). The SERS method was reliable and satisfactory for the quantitative analysis of ISE at low concentration.
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Affiliation(s)
- Yue Yuan
- College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Shuyun Bi
- College of Chemistry, Changchun Normal University, Changchun 130032, China.
| | - Fengming Zhang
- College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Yuting Wang
- College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Bin Yang
- College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Zhixin Ren
- College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Xu Li
- College of Chemistry, Changchun Normal University, Changchun 130032, China
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Swetha S, Okla MK, Al-Amri SS, Alaraidh IA, Abdel-Maksoud MA, Aufy M, Studenik CR, Sudheer Khan S. Novel insight on chemo-specific detection of toxic environmental chromium residues existing as recalcitrant Cr(III)-carboxyl complexes using plasmonic silver nanoplatform bi-functionalized with citrate and PVP. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 284:121789. [PMID: 36088743 DOI: 10.1016/j.saa.2022.121789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/16/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
Chromium (Cr) is a toxic environmental pollutant that majorly exists in trivalent and hexavalent forms. Though Cr(VI) is more dangerous than Cr(III), the trivalent Cr forms complexes with environmentally-available organic molecules. This makes them potentially harmful and difficult to detect. In this study, we have designed an ultrasensitive plasmonic nanosensor using citrate and PVP functionalized Ag nanoparticles (Ag-citrate-PVPNPs) for the detection of trivalent chromium organic complexes such as Cr(III)-EDTA (Cr-E), Cr(III)-acetate (Cr-A), Cr(III)-citrate (Cr-C) and Cr(III)-tartrate (Cr-T). The nanoparticles (NPs) were structurally characterized by XRD, SEM, HRTEM, SAED, EDX and elemental mapping. The citrate and PVP molecules played a vital role in the detection mechanism and stability of the sensor. Upon detection, the yellow-colored Ag-citrate-PVP NPs turned into different shades of brown depending on the type of the Cr complex and concentration. It was accompanied by diminishing and/or shifting UV-Visible absorbance peaks due to the aggregation of Ag-citrate-PVP NPs. Further, a linear relationship was observed between absorbance reduction and analyte concentration. The selectivity tests showed that the sensor was non-functional to other metal ions and inorganic anions. The sensor was optimized using pH and temperature studies. The mechanism of detection was elucidated with the help of characterization techniques such as Raman spectroscopy, FTIR, XPS and UV-visible spectrophotometer. The limit of detection (LOD) was found to be 3.29, 4.87, 1.76 and 1.79 nM for Cr-E, Cr-A, Cr-C and Cr-T complexes respectively. This study provides a rapid and sensitive approach for the detection of multiple Cr(III)-organic complexes present in an aqueous solution.
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Affiliation(s)
- S Swetha
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - Mohammad K Okla
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Saud S Al-Amri
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Ibrahim A Alaraidh
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mostafa A Abdel-Maksoud
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mohammed Aufy
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Chemistry, University of Vienna, Austria; Department of Pharmaceutical Sciences, Division of Pharmacology and Toxicology, University of Vienna, Austria
| | - Christian R Studenik
- Department of Pharmaceutical Sciences, Division of Pharmacology and Toxicology, University of Vienna, Austria
| | - S Sudheer Khan
- Department of Oral Medicine and Radiology, Saveetha Dental College and Hospitals, Saveetha Institite of Medical and Technical Sciences (SIMATS), Chennai- 600077, Tamil Nadu, India.
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In Situ SERS Sensing by a Laser-Induced Aggregation of Silver Nanoparticles Templated on a Thermoresponsive Polymer. BIOSENSORS 2022; 12:bios12080628. [PMID: 36005026 PMCID: PMC9405980 DOI: 10.3390/bios12080628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/27/2022] [Accepted: 08/05/2022] [Indexed: 11/17/2022]
Abstract
A stimuli-responsive (pH- and thermoresponsive) micelle-forming diblock copolymer, poly(1,2-butadiene)290-block-poly(N,N-dimethylaminoethyl methacrylate)240 (PB-b-PDMAEMA), was used as a polymer template for the in situ synthesis of silver nanoparticles (AgNPs) through Ag+ complexation with PDMAEMA blocks, followed by the reduction of the bound Ag+ with sodium borohydride. A successful synthesis of the AgNPs on a PB-b-PDMAEMA micellar template was confirmed by means of UV–Vis spectroscopy and transmission electron microscopy, wherein the shape and size of the AgNPs were determined. A phase transition of the polymer matrix in the AgNPs/PB-b-PDMAEMA metallopolymer hybrids, which results from a collapse and aggregation of PDMAEMA blocks, was manifested by changes in the transmittance of their aqueous solutions as a function of temperature. A SERS reporting probe, 4-mercaptophenylboronic acid (4-MPBA), was used to demonstrate a laser-induced enhancement of the SERS signal observed under constant laser irradiation. The local heating of the AgNPs/PB-b-PDMAEMA sample in the laser spot is thought to be responsible for the triggered SERS effect, which is caused by the approaching of AgNPs and the generation of “hot spots” under a thermo-induced collapse and the aggregation of the PDMAEMA blocks of the polymer matrix. The triggered SERS effect depends on the time of a laser exposure and on the concentration of 4-MPBA. Possible mechanisms of the laser-induced heating for the AgNPs/PB-b-PDMAEMA metallopolymer hybrids are discussed.
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8
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Green Silver Nanoparticles Promote Inflammation Shutdown in Human Leukemic Monocytes. MATERIALS 2022; 15:ma15030775. [PMID: 35160720 PMCID: PMC8836503 DOI: 10.3390/ma15030775] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/31/2021] [Accepted: 01/18/2022] [Indexed: 12/16/2022]
Abstract
The use of silver nanoparticles (Ag NPs) in the biomedical field deserves a mindful analysis of the possible inflammatory response which could limit their use in the clinic. Despite the anti-cancer properties of Ag NPs having been widely demonstrated, there are still few studies concerning their involvement in the activation of specific inflammatory pathways. The inflammatory outcome depends on the synthetic route used in the NPs production, in which toxic reagents are employed. In this work, we compared two types of Ag NPs, obtained by two different chemical routes: conventional synthesis using sodium citrate and a green protocol based on leaf extracts as a source of reduction and capping agents. A careful physicochemical characterization was carried out showing spherical and stable Ag NPs with an average size between 20 nm and 35 nm for conventional and green Ag NPs respectively. Then, we evaluated their ability to induce the activation of inflammation in Human Leukemic Monocytes (THP-1) differentiated into M0 macrophages using 1 µM and 2 µM NPs concentrations (corresponded to 0.1 µg/mL and 0.2 µg/mL respectively) and two-time points (24 h and 48 h). Our results showed a clear difference in Nuclear Factor κB (NF-κb) activation, Interleukins 6–8 (IL-6, IL-8) secretion, Tumor Necrosis Factor-α (TNF-α) and Cyclooxygenase-2 (COX-2) expression exerted by the two kinds of Ag NPs. Green Ag NPs were definitely tolerated by macrophages compared to conventional Ag NPs which induced the activation of all the factors mentioned above. Subsequently, the exposure of breast cancer cell line (MCF-7) to the green Ag NPs showed that they exhibited antitumor activity like the conventional ones, but surprisingly, using the MCF-10A line (not tumoral breast cells) the green Ag NPs did not cause a significant decrease in cell viability.
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Zhang H, Wang D, Zhang D, Zhang T, Yang L, Li Z. In Situ Microfluidic SERS Chip for Ultrasensitive Hg 2+ Sensing Based on I --Functionalized Silver Aggregates. ACS APPLIED MATERIALS & INTERFACES 2022; 14:2211-2218. [PMID: 34964597 DOI: 10.1021/acsami.1c17832] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Mercury(II) ions are causing serious environmental pollution and health damage. Developing a simple, rapid, and sensitive sensor for Hg2+ detection is of great significance. Herein, we demonstrate an I--functionalized surface-enhanced Raman scattering (SERS) substrate for rapid and sensitive Hg2+ sensing on a highly integrated microfluidic platform. Based on the combination reaction between I- and Hg2+, the Hg2+ sensing is achieved via the SERS intensity "turn-off" strategy, where HgI2 precipitation is formed on an SERS substrate interface, dissociating the Raman reporters that coadsorbed with I-. Owing to the strong binding constant between I- and Hg2+, our I--functionalized substrate demonstrates a very fast sensing response (∼150 s). Through reliable in situ SERS detection, a robust calibration curve between the "turn-off" signal and "lgC" is obtained in a broad concentration range of 10-9 to 10-13 M. Additionally, the detectable Hg2+ concentration can be as low as 1 fM. The good selectivity toward Hg2+ is also verified by testing about a dozen common metal ions in water, such as K+, Na+, Ca2+, Mg2+, and so forth. Furthermore, we apply the SERS sensor for real tap and lake water sample detection, and good recoveries of 113, 97, and 107% are obtained. With its advantages of high integration, simple preparation, fast response, high sensitivity, and reliability, the proposed I--functionalized SERS sensor microfluidic chip can be a promising platform for real-time and on-site Hg2+ detection in natural water.
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Affiliation(s)
- Huijuan Zhang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure (NPNS), Department of Physics, Capital Normal University, Beijing 100048, P.R. China
| | - Dong Wang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure (NPNS), Department of Physics, Capital Normal University, Beijing 100048, P.R. China
| | - Duan Zhang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure (NPNS), Department of Physics, Capital Normal University, Beijing 100048, P.R. China
| | - Tongtong Zhang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure (NPNS), Department of Physics, Capital Normal University, Beijing 100048, P.R. China
| | - Longkun Yang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure (NPNS), Department of Physics, Capital Normal University, Beijing 100048, P.R. China
| | - Zhipeng Li
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structure (NPNS), Department of Physics, Capital Normal University, Beijing 100048, P.R. China
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10
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Ge H, Yin R, Su P, Yu L, Lei M, Sun M, Sun Z, Wang S. On-site detection of As(III) based on silver nanoparticles aggregation mediated by phosphates using surface-enhanced Raman scattering (SERS). Mikrochim Acta 2022; 189:44. [PMID: 34978598 DOI: 10.1007/s00604-021-05134-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 12/07/2021] [Indexed: 11/27/2022]
Abstract
A portable and simple method was developed for on-site selective determination of As(III) based on the SERS signal of As(III)-O vibration. The method relies on the synergistic effect of nanoparticles aggregation and analyte adsorption. Experimental results demonstrated that phosphate replaced the ligands of HH@Ag NPs, which in turn facilitated the adsorption of As(III) on the surface of HH@Ag NPs. The phosphate was introduced as an agglomerating agent to improve the detection ability of the method for As(III). The method shows good selectivity and linear relationship between 5 × 10-8 and 0.8 × 10-6 M, with the detection limit of 1.8 × 10-9 M. The method was applied to actual water samples and successfully detected As(III), indicating that the method could have application potential in actual detection scenarios.
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Affiliation(s)
- Hongwei Ge
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China
| | - Ranhao Yin
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China
| | - Pengchen Su
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China
| | - Long Yu
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China
| | - Ming Lei
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China
| | - Mingtai Sun
- Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - Zhenli Sun
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China
| | - Suhua Wang
- MOE Key Laboratory of Resources and Environmental System Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China. .,Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China.
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11
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Yao Y, Zhang H, Tian T, Liu Y, Zhu R, Ji J, Liu B. Iodide-modified Ag nanoparticles coupled with DSN-Assisted cycling amplification for label-free and ultrasensitive SERS detection of MicroRNA-21. Talanta 2021; 235:122728. [PMID: 34517596 DOI: 10.1016/j.talanta.2021.122728] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 07/17/2021] [Accepted: 07/21/2021] [Indexed: 01/22/2023]
Abstract
With the emergence of microRNA (miRNA) as a key player in early clinical disease diagnosis, development of rapidly sensitive and quantitative miRNA detection methods are imperative. Herein, a label-free SERS assay coupled with duplex-specific nuclease (DSN) signal amplification strategy was proposed for facilely ultrasensitive and quantitative analysis of miRNA-21. Firstly, magnetic beads assembled with excessive capture DNA were utilized to hybridize the target miRNA-21. These DNA-RNA heteroduplexes were cleaved by DSN to generate small nucleotide fragments into the supernatant and the miRNA-21 released and rehybridized another DNA, going to the next DSN cycle. Consequently, numerous of small nucleotide fragments of capture DNA were released from magnetic beads and the miRNA-21 signal was transferred and amplified by the SERS signals of total phosphate backbones which are abundant in nucleotide. Furthermore, iodide-modified Ag nanoparticles (AgINPs) was employed to generate a strong and reproducible SERS signal. The proposed method displayed excellent performance for miRNA-21 detection with the linear range from 0.33 fM to 3.3 pM, and a lower detection limit of 42 aM. Moreover, this strategy exhibited effectively base discrimination capability and was successfully applied for monitoring the expression levels of miRNA-21 in different cancer cell lines and human serum.
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Affiliation(s)
- Yuanyuan Yao
- Department of Chemistry, Shanghai Stomatological Hospital, Institute of Biomedical Sciences, State Key Lab of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China; Jiaxing Key Laboratory of Molecular Recognition and Sensing, College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing, Zhejiang, 314001, China
| | - Hongding Zhang
- Department of Chemistry, Shanghai Stomatological Hospital, Institute of Biomedical Sciences, State Key Lab of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
| | - Tongtong Tian
- Department of Chemistry, Shanghai Stomatological Hospital, Institute of Biomedical Sciences, State Key Lab of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
| | - Yixin Liu
- Department of Chemistry, Shanghai Stomatological Hospital, Institute of Biomedical Sciences, State Key Lab of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
| | - Rendan Zhu
- Jiaxing Key Laboratory of Molecular Recognition and Sensing, College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing, Zhejiang, 314001, China
| | - Ji Ji
- Department of Chemistry, Shanghai Stomatological Hospital, Institute of Biomedical Sciences, State Key Lab of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China.
| | - Baohong Liu
- Department of Chemistry, Shanghai Stomatological Hospital, Institute of Biomedical Sciences, State Key Lab of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China.
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12
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Tálas E, Szőllősi G, Kristyán S, Németh C, Firkala T, Mink J, Mihály J. Surface enhanced Raman spectroscopic (SERS) behavior of phenylpyruvates used in heterogeneous catalytic asymmetric cascade reaction. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 260:119912. [PMID: 34015742 DOI: 10.1016/j.saa.2021.119912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 04/25/2021] [Accepted: 05/02/2021] [Indexed: 06/12/2023]
Abstract
The strength and geometry of adsorption of substituted phenylpyruvates on silver surface was studied by means of surface enhanced Raman spectroscopy (SERS) using silver sol. 2'-nitrophenylpyruvates were used as starting materials in a newly developed heterogeneous catalytic asymmetric cascade reaction to produce substituted quinoline derivatives. Substituents on the aromatic ring of the starting materials had significant influence on the yield of the desired quinoline derivatives. Product selectivity of the transformation of nitrophenylpyruvates were enhanced by the acid added. The geometry and the strength of the adsorption are assumed to play an important role in the outcome of this reaction, so we have tried to find correlation between the structure of adsorbed phenylpyruvates and their catalytic performance. Based on the results of our spectroscopic measurements, the enol form is predominant in the series of phenylpyruvates in solid form and methanol solutions. Stronger adsorption of phenylpyruvates in acidic media through oxygen atoms was indicated by the increased enhancement in the SERS spectrum. The nitro group of 2'-nitrophenylpyruvates has no direct role in the adsorption on Ag surface. This observation has explained why the hydrogenation of the keto group (presumably via the enol form) occurs preferentially and why the formation of the undesired indole derivatives requiring reduction of the nitro group is suppressed. The SERS behavior has helped to get a closer look on the first step of adsorption of starting materials contributing to a better understanding of the cascade reaction studied, thus providing a better flexibility in catalyst design.
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Affiliation(s)
- Emília Tálas
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network (ELKH), H-1117 Budapest, Magyar Tudósok körútja 2, Hungary.
| | - György Szőllősi
- MTA-SZTE Stereochemistry Research Group, H-6720 Szeged, Dóm tér 8, Hungary
| | - Sándor Kristyán
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network (ELKH), H-1117 Budapest, Magyar Tudósok körútja 2, Hungary
| | - Csaba Németh
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network (ELKH), H-1117 Budapest, Magyar Tudósok körútja 2, Hungary
| | - Tamás Firkala
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network (ELKH), H-1117 Budapest, Magyar Tudósok körútja 2, Hungary
| | - János Mink
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network (ELKH), H-1117 Budapest, Magyar Tudósok körútja 2, Hungary
| | - Judith Mihály
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Eötvös Loránd Research Network (ELKH), H-1117 Budapest, Magyar Tudósok körútja 2, Hungary; Department of Chemistry, Eszterházy Károly University, H-3300 Eger, Leányka u. 6, Hungary.
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Zhou ZM, Zheng H, Liu T, Xie ZZ, Luo SH, Chen GY, Tian ZQ, Liu GK. Improving SERS Sensitivity toward Trace Sulfonamides: The Key Role of Trade-Off Interfacial Interactions among the Target Molecules, Anions, and Cations on the SERS Active Surface. Anal Chem 2021; 93:8603-8612. [PMID: 34115465 DOI: 10.1021/acs.analchem.1c01530] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In recent years, ensuring the rational use and effective control of antibiotics has been a major focus in the eco-environment, which requires an effective monitoring method. However, on-site rapid detection of antibiotics in water environments remains a challenging issue. In this study, surface-enhanced Raman spectroscopy (SERS) was used to systematically achieve selective, rapid, and highly sensitive detection of sulfonamides, based on their fingerprint characteristics. The results show that the trade-off between the competitive and coadsorption behaviors of target molecules and agglomerates (inorganic salts) on the surface of the SERS substrate determines whether the molecules can be detected with high sensitivity. Based on this, the qualitative differentiation and quantitative detection of three structurally similar antibiotics, sulfadiazine, sulfamerazine, and sulfamethazine, were achieved, with the lowest detectable concentration being 1 μg/L for sulfadiazine and 50 μg/L for sulfamerazine and sulfamethazine.
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Affiliation(s)
- Zhi-Ming Zhou
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Hong Zheng
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Tao Liu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Ze-Zhong Xie
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Si-Heng Luo
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Gan-Yu Chen
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Zhong-Qun Tian
- State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Guo-Kun Liu
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
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14
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Chen GY, Sun YB, Shi PC, Liu T, Li ZH, Luo SH, Wang XC, Cao XY, Ren B, Liu GK, Yang LL, Tian ZQ. Revealing unconventional host-guest complexation at nanostructured interface by surface-enhanced Raman spectroscopy. LIGHT, SCIENCE & APPLICATIONS 2021; 10:85. [PMID: 33875636 PMCID: PMC8055983 DOI: 10.1038/s41377-021-00526-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 03/20/2021] [Accepted: 03/31/2021] [Indexed: 06/12/2023]
Abstract
Interfacial host-guest complexation offers a versatile way to functionalize nanomaterials. However, the complicated interfacial environment and trace amounts of components present at the interface make the study of interfacial complexation very difficult. Herein, taking the advantages of near-single-molecule level sensitivity and molecular fingerprint of surface-enhanced Raman spectroscopy (SERS), we reveal that a cooperative effect between cucurbit[7]uril (CB[7]) and methyl viologen (MV2+2I-) in aggregating Au NPs originates from the cooperative adsorption of halide counter anions I-, MV2+, and CB[7] on Au NPs surface. Moreover, similar SERS peak shifts in the control experiments using CB[n]s but with smaller cavity sizes suggested the occurrence of the same guest complexations among CB[5], CB[6], and CB[7] with MV2+. Hence, an unconventional exclusive complexation model is proposed between CB[7] and MV2+ on the surface of Au NPs, distinct from the well-known 1:1 inclusion complexation model in aqueous solutions. In summary, new insights into the fundamental understanding of host-guest interactions at nanostructured interfaces were obtained by SERS, which might be useful for applications related to host-guest chemistry in engineered nanomaterials.
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Affiliation(s)
- Gan-Yu Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Yi-Bin Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Pei-Chen Shi
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Tao Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, China
| | - Zhi-Hao Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Si-Heng Luo
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, China
| | - Xin-Chang Wang
- School of Electronic Science and Engineering (National Model Microelectronics College), Xiamen University, Xiamen, 361005, China
| | - Xiao-Yu Cao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
- Key Laboratory of Chemical Biology of Fujian Province, Xiamen University, Xiamen, 361005, China
| | - Bin Ren
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Guo-Kun Liu
- State Key Laboratory of Marine Environmental Science, Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Center for Marine Environmental Chemistry & Toxicology, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, China.
| | - Liu-Lin Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
| | - Zhong-Qun Tian
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
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15
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Han S, Zhang C, Chen Z, Sha X, Hasi W. Rapid Detection of Dezocine in Biological Fluids Based on SERS Technology. ANAL SCI 2021; 37:315-320. [PMID: 32893251 DOI: 10.2116/analsci.20p259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This paper describes a method based on surface enhanced Raman spectroscopy (SERS) technology for rapid detection of dezocine in urine and serum. Firstly, an Ag colloid substrate was prepared and characterized. Then the Raman characteristic peaks of dezocine were assigned from both theoretical and experimental aspects. Finally, the Raman peak at 661 cm-1 was selected as its characteristic peak to perform SERS detection on dezocine in urine and serum, and the detection limits of dezocine in urine and serum were determined. The relationships between the characteristic peak intensity and the concentration of dezocine in urine and serum were fitted and the recovery rates were calculated. This rapid, accurate and non-destructive method establishes a good foundation for rapid on-site detection of dezocine in biological samples.
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Affiliation(s)
- Siqingaowa Han
- National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology.,Affiliated Hospital of Inner Mongolia University for the Nationalities
| | - Chen Zhang
- National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology
| | - Zhijie Chen
- Department of Ophthalmology, Harbin 242 Hospital
| | - Xuanyu Sha
- National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology
| | - Wuliji Hasi
- National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology
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16
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Mathioudakis GN, Soto Beobide A, Anastasiadis SH, Voyiatzis GA. Surface enhanced Raman scattering of brilliant green: Packing density and stabilizing effect of the cationic surfactant CTAB on the “hotspot” spacing. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Comparative Performance of Citrate, Borohydride, Hydroxylamine and β-Cyclodextrin Silver Sols for Detecting Ibuprofen and Caffeine Pollutants by Means of Surface-Enhanced Raman Spectroscopy. NANOMATERIALS 2020; 10:nano10122339. [PMID: 33255684 PMCID: PMC7760587 DOI: 10.3390/nano10122339] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 11/20/2020] [Accepted: 11/22/2020] [Indexed: 11/17/2022]
Abstract
The detection of emerging contaminants in the aquatic environment, such as ibuprofen and caffeine, was studied by means of surface-enhanced Raman spectroscopy (SERS) using Ag nanoparticles (AgNPs) synthesized with β-cyclodextrin (βCD) as a reducing agent. The effect on the SERS signal of different molar ratios of Ag+/βCD in the synthesis route and the aging process of AgNPs were investigated by using trans-cinnamic as a test molecule. The SERS effectiveness of these β-cyclodextrin colloids (Ag@βCD) was also checked and compared with that of other silver sols usually employed in SERS synthesized by using other reducing agents such as citrate, borohydride and hydroxylamine. All the synthesized SERS substrates were characterized by different techniques. The experimental results indicate that Ag@βCD with the more diluted Ag+/βCD molar ratio showed the best SERS signal, enabling detection at trace concentrations of 0.5 µM in the case of trans-cinnamic acid. The Ag@βCD sols also showed the best sensitivity for detecting ibuprofen and caffeine, reaching the lowest limit of detection (0.1 mM). The proposed synthetic route for Ag@βCD sols provides an improved SERS substrate for detecting organic pollutants with better performance than other standard silver sols.
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18
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Jiang X, Zhang J, Xu L, Wang W, Du J, Qu M, Han X, Yang L, Zhao B. Ultrasensitive SERS detection of antitumor drug methotrexate based on modified Ag substrate. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 240:118589. [PMID: 32563032 DOI: 10.1016/j.saa.2020.118589] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/02/2020] [Accepted: 06/05/2020] [Indexed: 06/11/2023]
Abstract
Methotrexate (MTX) is a drug with broad-spectrum antitumor activity that is of great importance in therapeutic drug monitoring applications. In this essay, the two-step modified concentrated Ag colloid with the assistance of KF and MgSO4 was used as the SERS active substrate for the ultrasensitive detection of MTX and its commercial formulations (tablets). It can be found that the two-step modification of the samples is a crucial procedure to remove the by-products in the synthesis of Ag colloid and further concentrate the Ag colloid. Under the optimal detection conditions, the minimum detection concentration of MTX is 1 × 10-16 mol/L. And, there is a good linear relationship over a wide concentration range of 1 × 10-16-1 × 10-6 mol/L. The labelled amounts of the two manufacturers of MTX commercial tablets are in the range of 96.4-104.3% with the RSDs between 1.8% and 3.5% by this method, which are in accordance with the methodological requirements. These results prove that the proposed SERS method exhibits a good reproducibility and ultra-high sensitivity for the detection of the antitumor drug MTX.
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Affiliation(s)
- Xin Jiang
- College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China
| | - Jian Zhang
- College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China
| | - Lin Xu
- College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China
| | - Weie Wang
- College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China
| | - Juan Du
- College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China
| | - Minghuan Qu
- College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China
| | - Xiaoxia Han
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, People's Republic of China
| | - Libin Yang
- College of Pharmacy, Jiamusi University, Jiamusi 154007, People's Republic of China.
| | - Bing Zhao
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, People's Republic of China.
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Iancu SD, Stefancu A, Moisoiu V, Leopold LF, Leopold N. The role of Ag +, Ca 2+, Pb 2+ and Al 3+ adions in the SERS turn-on effect of anionic analytes. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2019; 10:2338-2345. [PMID: 31886110 PMCID: PMC6902780 DOI: 10.3762/bjnano.10.224] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 11/04/2019] [Indexed: 06/10/2023]
Abstract
In our recent studies we highlighted the role of adsorbed ions (adions) in turning on the surface-enhanced Raman scattering (SERS) effect in a specific mode for anionic and cationic analytes. In this work, we emphasize the role of Ag+, Ca2+, Pb2+ and Al3+ adions in the specific adsorption of anionic analytes such as the citrate capping agent and three organic acids. Our results suggest an adion-specific adsorption mechanism: the adsorption of anionic analytes is facilitated by positively charged adions such as Ag+, Ca2+, Pb2+ or Al3+, which provide adsorption sites specific for the anionic analytes. The turn-on of the SERS effect is explained in the context of the chemical mechanism of SERS. The adions form SERS-active sites on the silver surface enabling a charge transfer between the adsorbate and the silver surface. High-intensity SERS spectra of uric acid, salicylic acid and fumaric acid could be recorded at a concentration of 50 µM only after activation of the colloidal silver nanoparticles by Ca2+, Pb2+ or Al3+ (50 µM). The chemisorption of the three anionic species to the silver surface occurs competitively and is enhanced with the anions of higher affinities to the silver surface as indicated by the SERS spectra of corresponding mixed solutions.
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Affiliation(s)
- Stefania D Iancu
- Faculty of Physics, Babeș-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Manastur 3-5, 400372 Cluj-Napoca, Romania
| | - Andrei Stefancu
- Faculty of Physics, Babeș-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Manastur 3-5, 400372 Cluj-Napoca, Romania
| | - Vlad Moisoiu
- Faculty of Physics, Babeș-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Loredana F Leopold
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Manastur 3-5, 400372 Cluj-Napoca, Romania
| | - Nicolae Leopold
- Faculty of Physics, Babeș-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania
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Development of uncoated near-spherical gold nanoparticles for the label-free quantification of Lactobacillus rhamnosus GG by surface-enhanced Raman spectroscopy. Anal Bioanal Chem 2019; 411:5563-5576. [PMID: 31209547 DOI: 10.1007/s00216-019-01938-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/01/2019] [Accepted: 05/22/2019] [Indexed: 12/25/2022]
Abstract
The Surface-enhanced Raman spectroscopy (SERS) method based on gold nanoparticles as SERS substrate was investigated for the label-free detection and quantification of probiotic bacteria that are widely used in various pharmaceutical formulations. Indeed, the development of a simple and fast SERS method dedicated to the quantification of bacteria should be very useful for the characterization of such formulations in a more convenient way than the usually performed tedious and time-consuming conventional counting method. For this purpose, uncoated near-spherical gold nanoparticles were developed at room temperature by acidic treatment of star-like gold nanoparticle precursors. In this study, we first investigated the influence of acidic treatment conditions on both the nanoparticle physicochemical properties and SERS efficiency using Rhodamine 6G (R6G) as "model" analyte. Results highlighted that an effective R6G Raman signal enhancement was obtained by promoting chemical effect through R6G-anion interactions and by obtaining a suitable aggregation state of the nanoparticles. Depending on the nanoparticle synthesis conditions, R6G SERS signals were up to 102-103-fold greater than those obtained with star-like gold nanoparticles. The synthesized spherical gold nanoparticles were then successfully applied for the detection and quantification of Lactobacillus rhamnosus GG (LGG). In that case, the signal enhancement was especially due to the combination of anion-induced chemical enhancement and nanoparticle aggregation on LGG cell wall consecutive to non-specific interactions. Both the simplicity and speed of the procedure, achieved under 30 min, including nanoparticle synthesis, sample preparation, and acquisition of SERS spectra, appeared as very relevant for the characterization of pharmaceutical formulations incorporating probiotics. Graphical abstract.
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Zhao Y, Yamaguchi Y, Liu C, Li M, Dou X. Rapid and quantitative detection of trace Sudan black B in dyed black rice by surface-enhanced Raman spectroscopy (SERS). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 216:202-206. [PMID: 30901705 DOI: 10.1016/j.saa.2019.03.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/11/2019] [Accepted: 03/12/2019] [Indexed: 06/09/2023]
Abstract
The use of Sudan black B as coloring agent in foods is forbidden for its toxicology effect on human organs. This work proposes an efficient and sensitive method for food security inspection targeting Sudan black B. Surface-enhanced Raman spectroscopy (SERS) is applied to the analysis of trace Sudan black B. It could be detected at concentrations as low as 0.05 mg/L in standard solutions and 0.1 mg/kg in black rice extracts with the SERS method for measurement. The linear relationship between the intensity and concentration could be used for the quantitative detection of Sudan black B. The relation between dyeing time of black rice stained by Sudan black B solution and SERS intensity was studied which indirectly showed the effectiveness of the extraction method we designed. The results of the quantitative analysis reveal the practicability of using this method to detect Sudan black B in black rice. As a rapid and sensitive detection method, SERS can be extended to detect other food products and has a great application prospect in food safety inspection.
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Affiliation(s)
- Yubin Zhao
- Institute of Photonics & Bio-medicine, School of Science, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yoshinori Yamaguchi
- Institute of Photonics & Bio-medicine, School of Science, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China; Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita-city, Osaka 565-0871, Japan.
| | - Chenchen Liu
- Institute of Photonics & Bio-medicine, School of Science, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Mingda Li
- Institute of Photonics & Bio-medicine, School of Science, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xiaoming Dou
- Institute of Photonics & Bio-medicine, School of Science, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China; Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita-city, Osaka 565-0871, Japan
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22
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Zhang C, You T, Yang N, Gao Y, Jiang L, Yin P. Hydrophobic paper-based SERS platform for direct-droplet quantitative determination of melamine. Food Chem 2019; 287:363-368. [PMID: 30857711 DOI: 10.1016/j.foodchem.2019.02.094] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 02/19/2019] [Accepted: 02/21/2019] [Indexed: 11/27/2022]
Abstract
A novel hydrophobic-SERS substrate platform based on silver nanoparticles (AgNPs) functionalized commercially available filter paper was reported. Compared with conventional substrates, not only could this novel SERS substrate meet the requirements of simple and large-scale preparation, but also realized direct droplet-detection with reusable property. In this work, the fabrication, physical characterization, and SERS sensitivity of the substrates to spot-on food determination were studied. The experimental results show the method exhibited high reproducibility with less than 9% spot-to-spot variation in Raman intensity. Furthermore, the method was successfully applied to detect melamine in diluted milk with the instrument detection limit (IDL) down to 1 ppm in a linear correlation (1 ppm-1000 ppm). In addition, this SERS substrate could also be applied successfully in other fields, such as the determination of pesticide (thiram) and dye (malachite green) in real environment.
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Affiliation(s)
- Chenmeng Zhang
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, China
| | - Tingting You
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, China
| | - Nan Yang
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, China
| | - Yukun Gao
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, China
| | - Li Jiang
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China.
| | - Penggang Yin
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, China.
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23
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ZHANG C, HAN SQGW, ZHAO H, LIN S, HASI WLJ. Detection and Quantification of Bucinnazine Hydrochloride Injection Based on SERS Technology. ANAL SCI 2018; 34:1249-1255. [DOI: 10.2116/analsci.18p158] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Chen ZHANG
- National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology
| | | | - Hang ZHAO
- National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology
| | - Shuang LIN
- National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology
| | - Wu-Li-Ji HASI
- National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology
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24
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Týčová A, Klepárník K. Combination of liquid-based column separations with surface-enhanced Raman spectroscopy. J Sep Sci 2018; 42:431-444. [PMID: 30267463 DOI: 10.1002/jssc.201800852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 09/25/2018] [Accepted: 09/25/2018] [Indexed: 01/07/2023]
Abstract
Surface-enhanced Raman spectroscopy is a constantly developing analytical method providing not only high-sensitive quantitative but also qualitative information on an analyte. Thus, it is reasonable that it has been tested as a promising detection method in column separations. Although its implementation in analytical separations is not widespread, some surprising results, like enormous signal enhancement and demonstrations of single-molecule identifications, proved in only a few special examples, indicate the potential of the method. The high detection sensitivity and selectivity would be of paramount importance in trace analyses of biologically relevant molecules in complex matrices. However, the combination of surface-enhanced Raman spectroscopy with column separation methods brings two principal issues. Interactions of analytes with metal substrates can cause deteriorations of separations and the detection can be affected by background electrolytes or elution agents. Thus, in principle, this review is on the experimental and methodological solutions to these problems. First, theoretical and practical aspects of Raman scattering, and excitation of surface plasmon in colloid suspensions of nanoparticles and on planar nanostructured substrates are briefly explained. Advances in experimental arrangements of on-line and at-line couplings with column liquid phase separation methods, including microfluidic devices, are described together with chosen analytical applications.
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Affiliation(s)
- Anna Týčová
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Brno, Czech Republic
| | - Karel Klepárník
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Brno, Czech Republic
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25
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Panneerselvam R, Xiao L, Waites KB, Atkinson TP, Dluhy RA. A rapid and simple chemical method for the preparation of Ag colloids for surface-enhanced Raman spectroscopy using the Ag mirror reaction. VIBRATIONAL SPECTROSCOPY 2018; 98:1-7. [PMID: 30662146 PMCID: PMC6335038 DOI: 10.1016/j.vibspec.2018.06.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Colloidal silver (Ag) nanoparticles (AgNP) have been widely used for surface-enhanced Raman spectroscopy (SERS) applications. We report a simple, rapid and effective method to prepare AgNP colloids for SERS using the classic organic chemistry Ag mirror reaction with Tollens' reagent. The AgNP colloid prepared with this process was characterized using SEM, and the reaction conditions further optimized using SERS measurements. It was found that Ag mirror reaction conditions that included 20 mM AgNO3, 5 min reaction time, and 0.5 M glucose produced AgNP colloids with an average size of 319.1 nm (s.d ±128.1). These AgNP colloids exhibited a significant SERS response when adenine was used as the reporter molecule. The usefulness of these new AgNP colloids was demonstrated by detecting the nucleotides adenosine 5'-monophosphate (AMP), guanosine 5'-monophosphate (GMP), cytidine 5'-monophosphate (CMP), and uridine 5'-monophosphate (UMP). A detection limit of 500 nM for AMP was achieved with the as-prepared AgNP colloid. The bacterium Mycoplasma pneumoniae was also easily detected in laboratory culture with these SERS substrates. These findings attest to the applicability of this AgNP colloid for the sensitive and specific detection of both small biomolecules and microorganisms.
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Affiliation(s)
- Rajapandiyan Panneerselvam
- Department of Chemistry, University of Alabama at Birmingham, 901 14th Street South, Birmingham 35294 USA
| | - Li Xiao
- Department of Medicine, Pathology and Pediatrics, University of Alabama at Birmingham, Birmingham 35294 USA
| | - Ken B. Waites
- Departments of Pathology and Pediatrics, University of Alabama at Birmingham, Birmingham 35294 USA
| | - T. Prescott Atkinson
- Department of Pediatrics, University of Alabama at Birmingham, Birmingham 35294 USA
| | - Richard A. Dluhy
- Department of Chemistry, University of Alabama at Birmingham, 901 14th Street South, Birmingham 35294 USA
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26
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Leopold N, Stefancu A, Herman K, Tódor IS, Iancu SD, Moisoiu V, Leopold LF. The role of adatoms in chloride-activated colloidal silver nanoparticles for surface-enhanced Raman scattering enhancement. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2018; 9:2236-2247. [PMID: 30202692 PMCID: PMC6122276 DOI: 10.3762/bjnano.9.208] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 08/03/2018] [Indexed: 05/24/2023]
Abstract
Chloride-capped silver nanoparticles (Cl-AgNPs) allow for high-intensity surface-enhanced Raman scattering (SERS) spectra of cationic molecules to be obtained (even at nanomolar concentration) and may also play a key role in understanding some fundamental principles behind SERS. In this study, we describe a fast (<10 min) and simple protocol for obtaining highly SERS-active colloidal silver nanoparticles (AgNPs) with a mean diameter of 36 nm by photoconversion from AgCl precursor microparticles in the absence of any organic reducing or capping agent. The resulting AgNPs are already SERS-activated by the Cl- ions chemisorbed onto the metal surface where the chloride concentration in the colloidal solution is 10-2 M. Consequently, the enhanced SERS spectra of cationic dyes (e.g., crystal violet or 9-aminoacridine) demonstrate the advantages of Cl-AgNPs compared to the as-synthesized AgNPs obtained by standard Ag+ reduction with hydroxylamine (hya-AgNPS) or citrate (cit-AgNPs). The results of SERS experiments on anionic and cationic test molecules comparing Cl-AgNPs, hya-AgNPs and cit-AgNPs colloids activated with different amounts of Cl- and/or cations such as Ag+, Mg2+ or Ca2+ can be explained within the understanding of the adatom model - the chemisorption of cationic analytes onto the metal surface is mediated by the Cl- ions, whereas ions like Ag+, Mg2+ or Ca2+ mediate the electronic coupling of anionic species to the silver metal surface. Moreover, the SERS effect is switched on only after the electronic coupling of the adsorbate to the silver surface at SERS-active sites. The experiments presented in this study highlight the SERS-activating role played by ions such as Cl-, Ag+, Mg2+ or Ca2+, which is a process that seems to prevail over the Raman enhancement due to nanoparticle aggregation.
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Affiliation(s)
- Nicolae Leopold
- Faculty of Physics, Babeş-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Andrei Stefancu
- Faculty of Physics, Babeş-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Krisztian Herman
- Faculty of Physics, Babeş-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - István Sz Tódor
- Faculty of Physics, Babeş-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Stefania D Iancu
- Faculty of Physics, Babeş-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Vlad Moisoiu
- Faculty of Physics, Babeş-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania
| | - Loredana F Leopold
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Manastur 3-5, 400372 Cluj-Napoca, Romania
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27
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Hua MZ, Feng S, Wang S, Lu X. Rapid detection and quantification of 2,4-dichlorophenoxyacetic acid in milk using molecularly imprinted polymers-surface-enhanced Raman spectroscopy. Food Chem 2018; 258:254-259. [PMID: 29655731 DOI: 10.1016/j.foodchem.2018.03.075] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 01/15/2018] [Accepted: 03/17/2018] [Indexed: 10/17/2022]
Abstract
We report the development of a molecularly imprinted polymers-surface-enhanced Raman spectroscopy (MIPs-SERS) method for rapid detection and quantification of a herbicide residue 2,4-dichlorophenoxyacetic acid (2,4-D) in milk. MIPs were synthesized via bulk polymerization and utilized as solid phase extraction sorbent to selectively extract and enrich 2,4-D from milk. Silver nanoparticles were synthesized to facilitate the collection of SERS spectra of the extracts. Based on the characteristic band intensity of 2,4-D (391 cm-1), the limit of detection was 0.006 ppm and the limit of quantification was 0.008 ppm. A simple logarithmic working range (0.01-1 ppm) was established, satisfying the sensitivity requirement referring to the maximum residue level of 2,4-D in milk in both Europe and North America. The overall test of 2,4-D for each milk sample required only 20 min including sample preparation. This MIPs-SERS method has potential for practical applications in detecting 2,4-D in agri-foods.
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Affiliation(s)
- Marti Z Hua
- Food, Nutrition and Health Program, Faculty of Land and Food Systems, The University of British Columbia, Vancouver, BC, Canada
| | - Shaolong Feng
- Food, Nutrition and Health Program, Faculty of Land and Food Systems, The University of British Columbia, Vancouver, BC, Canada
| | - Shuo Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Xiaonan Lu
- Food, Nutrition and Health Program, Faculty of Land and Food Systems, The University of British Columbia, Vancouver, BC, Canada.
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28
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Sodium Chloride Crystal-Induced SERS Platform for Controlled Highly Sensitive Detection of Illicit Drugs. Chemistry 2018; 24:4800-4804. [DOI: 10.1002/chem.201800487] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Indexed: 01/18/2023]
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29
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Cholula-Díaz JL, Lomelí-Marroquín D, Pramanick B, Nieto-Argüello A, Cantú-Castillo LA, Hwang H. Synthesis of colloidal silver nanoparticle clusters and their application in ascorbic acid detection by SERS. Colloids Surf B Biointerfaces 2018; 163:329-335. [DOI: 10.1016/j.colsurfb.2017.12.051] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 12/05/2017] [Accepted: 12/28/2017] [Indexed: 11/16/2022]
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30
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Rasheed W, Shah MR, Perveen S, Ahmed S, Uzzaman S. Revelation of susceptibility differences due to Hg(II) accumulation in Streptococcus pyogenes against CX-AgNPs and Cefixime by atomic force microscopy. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 147:9-16. [PMID: 28822261 DOI: 10.1016/j.ecoenv.2017.08.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 08/08/2017] [Accepted: 08/12/2017] [Indexed: 06/07/2023]
Abstract
Solution based method for the formation of chemically modified silver nanoparticles (CX-AgNPs) using Cefixime as stabilizing and reducing agent was developed. The CX-AgNPs were characterized by AFM, UV-visible, FT-IR and MALDI-TOF MS. Bactericidal efficiency of CX-AgNPs and Cefixime against Streptococcus pyogenes was evaluated. Afterwards, susceptibility differences of Streptococcus pyogenes due to accumulation of Hg(II) against CX-AgNPs and Cefixime were estimated and validated through Atomic force microscopy. Selectivity and sensitivity of CX-AgNPs against Hg(II) was evaluated in a systematic manner. The CX-AgNPs was titrated against optically silent Hg(II) which induced enhancement in the SPR band of CX-AgNPs. The increase in intensity of SPR band of CX-AgNPs was determined to be proportionate to the concentration of Hg(II) in the range of 33.3-700µM obeying linear regression equation of y = 0.125x + 8.962 with the detection limit of 0.10µM and the coefficient of determination equals to 0.985 (n = 3). The association constant Ka of CX-AgNPs-Hg(II) was found to be 386.0095mol-1dm3 by using the Benesi Hildebrand plot.
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Affiliation(s)
- Wasia Rasheed
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Muhammad Raza Shah
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan.
| | - Samina Perveen
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Shakil Ahmed
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Sami Uzzaman
- H.E.J. Research Institute of Chemistry, International Centre for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
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31
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Prado AR, Souza DOD, Oliveira JP, Pereira RHA, Guimarães MCC, Nogueira BV, Dixini PV, Ribeiro MRN, Pontes MJ. Probing the Sulfur-Modified Capping Layer of Gold Nanoparticles Using Surface Enhanced Raman Spectroscopy (SERS) Effects. APPLIED SPECTROSCOPY 2017; 71:2670-2680. [PMID: 28714324 DOI: 10.1177/0003702817724180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Gold nanoparticles (AuNP) exhibit particular plasmonic properties when stimulated by visible light, which makes them a promising tool to many applications in sensor technology and biomedical applications, especially when associated to sulfur-based compounds. Sulfur species form a great variety of self-assembled structures that cap AuNP and this interaction rules the optical and plasmonic properties of the system. Here, we report the behavior of citrate-stabilized gold nanospheres in two distinct sulfur colloidal solutions, namely, thiocyanate and sulfide ionic solutions. Citrate-capped gold nanospheres were characterized using ultraviolet-visible (UV-Vis) absorption, transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), and atomic force microscopy (AFM). In the presence of sulfur species, we have observed the formation of NP clusters and chain-like structures, giving rise to surface-enhanced effects. Surface-enhanced Raman spectroscopy (SERS) pointed to a modification in citrate vibrational modes, which suggests substitution of citrate by either thiocyanate or sulfide ions with distinct dynamics, as showed by in situ fluorescence. Moreover, we report the emergence of surface-enhanced infrared absorption (SEIRA) effect, which corroborates SERS conclusions. Further, SEIRA shows a great potential as a tool for specification of sulfur compounds in colloidal solutions, which is particularly useful when dealing with sensor technology.
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Affiliation(s)
- Adilson R Prado
- 1 Instituto Federal do Espírito Santo, Serra-ES, Brazil
- 2 Departamento de Engenharia Elétrica-CTII, Universidade Federal do Espírito Santo, Vitória-ES, Brazil
| | - Danilo Oliveira de Souza
- 2 Departamento de Engenharia Elétrica-CTII, Universidade Federal do Espírito Santo, Vitória-ES, Brazil
| | - Jairo P Oliveira
- 3 Biotechnology, Universidade Federal do Espírito Santo, Vitória-ES, Brazil
| | - Rayssa H A Pereira
- 3 Biotechnology, Universidade Federal do Espírito Santo, Vitória-ES, Brazil
| | | | - Breno V Nogueira
- 3 Biotechnology, Universidade Federal do Espírito Santo, Vitória-ES, Brazil
| | - Pedro V Dixini
- 4 Instituto Federal do Espírito Santo, Aracruz-ES, Brazil
| | - Moisés R N Ribeiro
- 2 Departamento de Engenharia Elétrica-CTII, Universidade Federal do Espírito Santo, Vitória-ES, Brazil
| | - Maria J Pontes
- 2 Departamento de Engenharia Elétrica-CTII, Universidade Federal do Espírito Santo, Vitória-ES, Brazil
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32
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Li C, Li Q, Long X, Li T, Zhao J, Zhang K, E S, Zhang J, Li Z, Yao Y. In Situ Generation of Photosensitive Silver Halide for Improving the Conductivity of Electrically Conductive Adhesives. ACS APPLIED MATERIALS & INTERFACES 2017; 9:29047-29054. [PMID: 28783299 DOI: 10.1021/acsami.7b07045] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Electrically conductive adhesives (ECAs) can be regarded as one of the most promising materials to replace tin/lead solder. However, relatively low conductivity seriously restricts their applications. In the present study, we develop an effective method to decrease the bulk electrical resistivity of ECAs. KI or KBr is added to replace the lubricant and silver oxide layers on silver flakes and to form photosensitive silver halide. After exposure to sunlight, silver halide can photodecompose into silver nanoparticles that will sinter and form metallic bonding between/among flakes during the curing process of ECAs, which would remarkably reduce the resistivity. The modified micro silver flakes play a crucial role in decreasing the electrical resistivity of the corresponding ECAs, exhibiting the lowest resistivity of 7.6 × 10-5 Ω·cm for 70 wt % loaded ECAs. The obtained ECAs can have wide applications in the electronics industry, where high conductance is required.
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Affiliation(s)
- Chaowei Li
- Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences , Suzhou 215123, China
- School of Nano Technology and Nano Bionics, University of Science and Technology of China , Hefei 230026, China
| | - Qiulong Li
- Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Xiaoyang Long
- Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Taotao Li
- Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Jingxin Zhao
- Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Kai Zhang
- Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Songfeng E
- Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences , Suzhou 215123, China
- School of Nano Technology and Nano Bionics, University of Science and Technology of China , Hefei 230026, China
| | - Jun Zhang
- Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences , Suzhou 215123, China
| | - Zhuo Li
- Department of Materials Science, Fudan University , Shanghai 200433, China
| | - Yagang Yao
- Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences , Suzhou 215123, China
- School of Nano Technology and Nano Bionics, University of Science and Technology of China , Hefei 230026, China
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33
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Madzharova F, Heiner Z, Kneipp J. Surface enhanced hyper Raman scattering (SEHRS) and its applications. Chem Soc Rev 2017; 46:3980-3999. [PMID: 28530726 DOI: 10.1039/c7cs00137a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Surface enhanced hyper Raman scattering (SEHRS) is the spontaneous, two-photon excited Raman scattering that occurs for molecules residing in high local optical fields of plasmonic nanostructures. Being regarded as a non-linear analogue of surface enhanced Raman scattering (SERS), SEHRS shares most of its properties, but also has additional characteristics. They include complementary spectroscopic information resulting from different selection rules and a stronger enhancement due to the non-linearity in excitation. In practical spectroscopy, this can translate to advantages, which include a high selectivity when probing molecule-surface interactions, the possibility of probing molecules at low concentrations due to the strong enhancement, and the advantages that come with excitation in the near-infrared. In this review, we give examples of the wealth of vibrational spectroscopic information that can be obtained by SEHRS and discuss work that has contributed to understanding the effect and that therefore provides directions for SEHRS spectroscopy. Future applications could range from biophotonics to materials research.
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Affiliation(s)
- Fani Madzharova
- Humboldt-Universität zu Berlin, Department of Chemistry, Brook-Taylor-Str. 2, 12489 Berlin, Germany.
| | - Zsuzsanna Heiner
- Humboldt-Universität zu Berlin, Department of Chemistry, Brook-Taylor-Str. 2, 12489 Berlin, Germany.
| | - Janina Kneipp
- Humboldt-Universität zu Berlin, Department of Chemistry, Brook-Taylor-Str. 2, 12489 Berlin, Germany.
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34
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Yoshikawa H, Hironou A, Shen Z, Tamiya E. Versatile Micropatterning of Plasmonic Nanostructures by Visible Light Induced Electroless Silver Plating on Gold Nanoseeds. ACS APPLIED MATERIALS & INTERFACES 2016; 8:23932-23940. [PMID: 27564976 DOI: 10.1021/acsami.6b07661] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A versatile fabrication technique for plasmonic silver (Ag) nanostructures that uses visible light exposure for micropatterning and plasmon resonance tuning is presented. The surface of a glass substrate modified with gold (Au) nanoseeds by a thermal dewetting process was used as a Ag plating platform. When a solution containing silver nitrate and sodium citrate was dropped on the Au nanoseeds under visible light exposure, the plasmon-mediated reduction of Ag ions was induced on the Au nanoseeds to form Ag nanostructures. The plasmon resonance spectra of Ag nanostructures were examined by an absorption spectral measurement and a finite-difference time-domain (FDTD) simulation. Some examples of Ag nanostructure patterning were demonstrated by means of light exposure through a photomask, direct writing with a focused laser beam, and the interference between two laser beams. Surface enhanced Raman spectroscopy (SERS) of 4-aminothiophenol (4-ATP) was conducted with fabricated Ag nanostructures.
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Affiliation(s)
- Hiroyuki Yoshikawa
- Department of Applied Physics, Osaka University , 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Asami Hironou
- Department of Applied Physics, Osaka University , 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - ZhengJun Shen
- Department of Applied Physics, Osaka University , 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Eiichi Tamiya
- Department of Applied Physics, Osaka University , 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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35
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Madzharova F, Heiner Z, Gühlke M, Kneipp J. Surface-Enhanced Hyper-Raman Spectra of Adenine, Guanine, Cytosine, Thymine, and Uracil. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2016; 120:15415-15423. [PMID: 28077982 PMCID: PMC5215682 DOI: 10.1021/acs.jpcc.6b02753] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 05/24/2016] [Indexed: 05/23/2023]
Abstract
Using picosecond excitation at 1064 nm, surface-enhanced hyper-Raman scattering (SEHRS) spectra of the nucleobases adenine, guanine, cytosine, thymine, and uracil with two different types of silver nanoparticles were obtained. Comparing the SEHRS spectra with SERS data from the identical samples excited at 532 nm and with known infrared spectra, the major bands in the spectra are assigned. Due to the different selection rules for the one- and two-photon excited Raman scattering, we observe strong variation in relative signal strengths of many molecular vibrations obtained in SEHRS and SERS spectra. The two-photon excited spectra of the nucleobases are found to be very sensitive with respect to molecule-nanoparticle interactions. Using both the SEHRS and SERS data, a comprehensive vibrational characterization of the interaction of nucleobases with silver nanostructures can be achieved.
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Affiliation(s)
- Fani Madzharova
- Department
of Chemistry, Humboldt-Universität
zu Berlin, Brook-Taylor-Strasse
2, 12489 Berlin, Germany
| | - Zsuzsanna Heiner
- Department
of Chemistry, Humboldt-Universität
zu Berlin, Brook-Taylor-Strasse
2, 12489 Berlin, Germany
- School
of Analytical Sciences Adlershof SALSA, Humboldt-Universität zu Berlin, Albert-Einstein-Strasse 5-11, 12489 Berlin, Germany
| | - Marina Gühlke
- Department
of Chemistry, Humboldt-Universität
zu Berlin, Brook-Taylor-Strasse
2, 12489 Berlin, Germany
| | - Janina Kneipp
- Department
of Chemistry, Humboldt-Universität
zu Berlin, Brook-Taylor-Strasse
2, 12489 Berlin, Germany
- School
of Analytical Sciences Adlershof SALSA, Humboldt-Universität zu Berlin, Albert-Einstein-Strasse 5-11, 12489 Berlin, Germany
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36
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Dick S, Konrad MP, Lee WWY, McCabe H, McCracken JN, Rahman TMD, Stewart A, Xu Y, Bell SEJ. Surface-Enhanced Raman Spectroscopy as a Probe of the Surface Chemistry of Nanostructured Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:5705-5711. [PMID: 26822589 DOI: 10.1002/adma.201505355] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 12/11/2015] [Indexed: 06/05/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS) is now widely used as a rapid and inexpensive tool for chemical/biochemical analysis. The method can give enormous increases in the intensities of the Raman signals of low-concentration molecular targets if they are adsorbed on suitable enhancing substrates, which are typically composed of nanostructured Ag or Au. However, the features of SERS that allow it to be used as a chemical sensor also mean that it can be used as a powerful probe of the surface chemistry of any nanostructured material that can provide SERS enhancement. This is important because it is the surface chemistry that controls how these materials interact with their local environment and, in real applications, this interaction can be more important than more commonly measured properties such as morphology or plasmonic absorption. Here, the opportunity that this approach to SERS provides is illustrated with examples where the surface chemistry is both characterized and controlled in order to create functional nanomaterials.
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Affiliation(s)
- Susan Dick
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, BT9 5AG, U.K
| | - Magdalena P Konrad
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, BT9 5AG, U.K
| | - Wendy W Y Lee
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, BT9 5AG, U.K
| | - Hannah McCabe
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, BT9 5AG, U.K
| | - John N McCracken
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, BT9 5AG, U.K
| | - Taifur M D Rahman
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, BT9 5AG, U.K
| | - Alan Stewart
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, BT9 5AG, U.K
| | - Yikai Xu
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, BT9 5AG, U.K
| | - Steven E J Bell
- School of Chemistry and Chemical Engineering, Queen's University, Belfast, BT9 5AG, U.K
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37
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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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38
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Lee WW, McCoy CP, Donnelly RF, Bell SE. Swellable polymer films containing Au nanoparticles for point-of-care therapeutic drug monitoring using surface-enhanced Raman spectroscopy. Anal Chim Acta 2016; 912:111-6. [DOI: 10.1016/j.aca.2016.01.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 01/11/2016] [Indexed: 11/24/2022]
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39
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Pandoli O, Martins RDS, Romani EC, Paciornik S, Maurício MHDP, Alves HDL, Pereira-Meirelles FV, Luz EL, Koller SML, Valiente H, Ghavami K. Colloidal silver nanoparticles: an effective nano-filler material to prevent fungal proliferation in bamboo. RSC Adv 2016. [DOI: 10.1039/c6ra12516f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Silver nanoparticles (Ag-NPs) are effective nano-filler agents with antifungal activity able to improve bamboo's durability against fungus. Ag-NPs were used to fill up the bamboo biological matrix to obtain an engineered biocomposite material.
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Affiliation(s)
- O. Pandoli
- Chemistry Department
- PUC-Rio
- Rio de Janeiro
- Brazil
| | | | | | - S. Paciornik
- Chemical and Materials Eng. Department
- PUC-Rio
- Rio de Janeiro
- Brazil
| | | | - H. D. L. Alves
- Applied Physics and Thermodynamics Department
- UERJ
- Rio de Janeiro
- Brazil
| | | | - E. L. Luz
- Chemistry Department
- PUC-Rio
- Rio de Janeiro
- Brazil
| | | | - H. Valiente
- Chemical and Materials Eng. Department
- PUC-Rio
- Rio de Janeiro
- Brazil
| | - K. Ghavami
- Civil Eng. Department
- PUC-Rio
- Rio de Janeiro
- Brazil
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40
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Ag-nanoparticles on UF-microsphere as an ultrasensitive SERS substrate with unique features for rhodamine 6G detection. Talanta 2016; 146:533-9. [DOI: 10.1016/j.talanta.2015.09.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 09/07/2015] [Accepted: 09/10/2015] [Indexed: 01/27/2023]
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41
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Wang F, Wang HL, Qiu Y, Chang YL, Long YT. In situ analysis of dynamic laminar flow extraction using surface-enhanced Raman spectroscopy. Sci Rep 2015; 5:18698. [PMID: 26687436 PMCID: PMC4685451 DOI: 10.1038/srep18698] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 11/23/2015] [Indexed: 11/08/2022] Open
Abstract
In this study, we performed micro-scale dynamic laminar flow extraction and site-specific in situ chloride concentration measurements. Surface-enhanced Raman spectroscopy was utilized to investigate the diffusion process of chloride ions from an oil phase to a water phase under laminar flow. In contrast to common logic, we used SERS intensity gradients of Rhodamine 6G to quantitatively calculate the concentration of chloride ions at specific positions on a microfluidic chip. By varying the fluid flow rates, we achieved different extraction times and therefore different chloride concentrations at specific positions along the microchannel. SERS spectra from the water phase were recorded at these different positions, and the spatial distribution of the SERS signals was used to map the degree of nanoparticle aggregation. The concentration of chloride ions in the channel could therefore be obtained. We conclude that this method can be used to explore the extraction behaviour and efficiency of some ions or molecules that enhance the SERS intensity in water or oil by inducing nanoparticle aggregation.
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Affiliation(s)
- Fei Wang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Hua-Lin Wang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Yang Qiu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Yu-Long Chang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Yi-Tao Long
- State Key Laboratory of Bioreactor Engineering & Department of Chemistry, East China University of Science and Technology, Shanghai 200237, China
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42
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Wang M, Zhang Z, He J. A SERS Study on the Assembly Behavior of Gold Nanoparticles at the Oil/Water Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:12911-12919. [PMID: 26556584 DOI: 10.1021/acs.langmuir.5b03131] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Herein, the assembly behavior of gold nanoparticles (AuNPs) at the oil/water interface is studied by surface-enhanced Raman scattering (SERS) spectroscopy. Two selected chemicals [1-dodecanethiol (DDT) and tetramethylammonium ion (TMA(+))] are applied to tune the surface properties of AuNPs and the corresponding assembly behaviors at the oil/water interface are thoroughly investigated. Various AuNPs films, namely sparse 2D film, perfect monolayer, and multilayers are obtained. The SERS spectra analyses show that the surface composition of AuNPs is strongly dependent on the chemical environment around AuNPs and results in different morphologies of AuNPs film at the oil/water interface. Accordingly, we propose a rational relationship between AuNPs assembly behavior at the oil/water interface and their surrounding chemical environment, and thus reveals the physical mechanism underlying the nanoparticle assembly.
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Affiliation(s)
- Mao Wang
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU) , Trondheim 7491, Norway
| | - Zhiliang Zhang
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU) , Trondheim 7491, Norway
| | - Jianying He
- NTNU Nanomechanical Lab, Department of Structural Engineering, Norwegian University of Science and Technology (NTNU) , Trondheim 7491, Norway
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43
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Label-free in-situ monitoring of protein tyrosine nitration in blood by surface-enhanced Raman spectroscopy. Biosens Bioelectron 2015; 69:1-7. [DOI: 10.1016/j.bios.2015.01.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 12/26/2014] [Accepted: 01/02/2015] [Indexed: 12/26/2022]
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44
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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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45
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Lee SJ, Cheong BS, Cho HG. Surface-enhanced Raman Spectroscopic Studies of Ellagic Acid in Silver Colloids. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10311] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Seung-Jang Lee
- Department of Chemistry; Incheon National University; Incheon 406-772 South Korea
| | - Byeong-Seo Cheong
- Department of Chemistry; Incheon National University; Incheon 406-772 South Korea
| | - Han-Gook Cho
- Department of Chemistry; Incheon National University; Incheon 406-772 South Korea
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46
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Firkala T, Farkas A, Vajna B, Nagy ZK, Pokol G, Marosi G, Szilágyi IM. Quantification of low drug concentration in model formulations with multivariate analysis using surface enhanced Raman chemical imaging. J Pharm Biomed Anal 2015; 107:318-24. [DOI: 10.1016/j.jpba.2014.12.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 11/23/2014] [Accepted: 12/22/2014] [Indexed: 10/24/2022]
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47
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Miljanić S, Dijanošić A, Matić I. Adsorption mechanisms of RNA mononucleotides on silver nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 137:1357-1362. [PMID: 25306131 DOI: 10.1016/j.saa.2014.09.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 08/28/2014] [Accepted: 09/18/2014] [Indexed: 06/04/2023]
Abstract
Surface-enhanced Raman scattering (SERS) of four RNA mononucleotides (AMP, GMP, CMP and UMP) has been studied on the citrate-reduced silver colloid aggregated with sodium sulfate. Concentration dependent spectra in the range of 1×10(-7)-1×10(-4) mol dm(-3) were obtained, assigned and interpreted according to the surface selection rules. For purine mononucleotides, AMP and GMP, adsorption onto the silver nanoparticles through the six-membered ring of the nitrogenous base was suggested. Concentration dependent splitting of the ring breathing band in the spectra of AMP indicated coexistence of two species on the silver surface, which differed in contribution of the adenine N1 atom and the exocyclic NH2 group in binding. Unlike the AMP spectra, the spectra of GMP implied only one mode of adsorption of the molecules onto the silver nanoparticles, taking place through the guanine N1H and C=O group. Weak SERS spectra of pyrimidine mononucleotides, CMP and UMP, pointed to involvement of carbonyl oxygen in adsorption process, whereby the molecules adopted the position on the nanoparticles with ribose close to the metal surface. Intense bands in the low wavenumber region, associated with stretching of the formed Ag-N and/or Ag-O bonds, supported chemical binding of the RNA mononucleotides with the silver surface.
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Affiliation(s)
- Snežana Miljanić
- Division of Analytical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia.
| | - Adriana Dijanošić
- Division of Analytical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia
| | - Ivona Matić
- Division of Analytical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, HR-10000 Zagreb, Croatia
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48
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Stewart A, Murray S, Bell SEJ. Simple preparation of positively charged silver nanoparticles for detection of anions by surface-enhanced Raman spectroscopy. Analyst 2015; 140:2988-94. [DOI: 10.1039/c4an02305f] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Modification of Ag colloids with thiocholine bromide switches the zeta potential from ca. −50 mV to ca. +50 mV, giving SERS substrates which promote adsorption of anions.
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Affiliation(s)
- A. Stewart
- School of Chemistry & Chemical Engineering
- Queen's University of Belfast
- Belfast BT9 5AG
- UK
| | - S. Murray
- School of Chemistry & Chemical Engineering
- Queen's University of Belfast
- Belfast BT9 5AG
- UK
| | - S. E. J. Bell
- School of Chemistry & Chemical Engineering
- Queen's University of Belfast
- Belfast BT9 5AG
- UK
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49
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Ungurean A, Oltean M, David L, Leopold N, Prates Ramalho JP, Chiş V. Adsorption of sulfamethoxazole molecule on silver colloids: A joint SERS and DFT study. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.05.074] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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50
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Lee WWY, Silverson VAD, McCoy CP, Donnelly RF, Bell SEJ. Preaggregated Ag Nanoparticles in Dry Swellable Gel Films for Off-the-Shelf Surface-Enhanced Raman Spectroscopy. Anal Chem 2014; 86:8106-13. [DOI: 10.1021/ac501959u] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wendy W. Y. Lee
- Innovative
Molecular Materials Group, School of Chemistry and Chemical Engineering, Queen’s University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | - Victoria A. D. Silverson
- Innovative
Molecular Materials Group, School of Chemistry and Chemical Engineering, Queen’s University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | - Colin P. McCoy
- School
of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, United Kingdom
| | - Ryan F. Donnelly
- School
of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, United Kingdom
| | - Steven E. J. Bell
- Innovative
Molecular Materials Group, School of Chemistry and Chemical Engineering, Queen’s University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
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