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Jinachandran A, Kokulnathan T, Wang TJ, Kumar KMA, Kumar J, Panneerselvam R. Silver nanopopcorns decorated on flexible membrane for SERS detection of nitrofurazone. Mikrochim Acta 2024; 191:347. [PMID: 38802574 DOI: 10.1007/s00604-024-06421-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 05/06/2024] [Indexed: 05/29/2024]
Abstract
The synthesis of three-dimensional silver nanopopcorns (Ag NPCs) onto a flexible polycarbonate membrane (PCM) for the detection of nitrofurazone (NFZ) on the fish surface by surface-enhanced Raman spectroscopy (SERS) is presented. The proposed flexible Ag-NPCs/PCM SERS substrate exhibits significant Raman signal intensity enhancement with the measured enhancement factor of 2.36 × 106. This is primarily attributed to the hotspots created on Ag NPCs, including numerous nanoscale protrusions and internal crevices distributed across the surface of Ag NPCs. The detection of NFZ by this flexible SERS substrate demonstrates a low limit of detection (LOD) of 3.7 × 10-9 M and uniform and reproducible Raman signal intensities with a relative standard deviation below 8.34%. It also exhibits excellent stability, retaining 70% of its efficacy even after 10 days of storage. Notably, the practical detection of NFZ in tap water, honey water, and fish surfaces achieves LOD values of 1.35 × 10-8 M, 5.76 × 10-7 M, and 3.61 × 10-8 M, respectively, which highlights its effectiveness across different sample types. The developed Ag-NPCs/PCM SERS substrate presents promising potential for sensitive SERS detection of toxic substances in real-world samples.
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Affiliation(s)
- Arunima Jinachandran
- Raman Research Laboratory, Department of Chemistry, SRM University-AP, Andhra Pradesh, Amaravati, 522503, India
| | - Thangavelu Kokulnathan
- Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan
| | - Tzyy-Jiann Wang
- Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan.
| | | | - Jayasree Kumar
- Raman Research Laboratory, Department of Chemistry, SRM University-AP, Andhra Pradesh, Amaravati, 522503, India
| | - Rajapandiyan Panneerselvam
- Raman Research Laboratory, Department of Chemistry, SRM University-AP, Andhra Pradesh, Amaravati, 522503, India.
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Arzhanukhina AI, Komova NS, Pavlov AM, Serdobintsev AA, Rusanova TY, Goryacheva IY. SERS Assays Based on Electrospun Nanofibers: Preparation and Analytical Applications. Crit Rev Anal Chem 2023:1-16. [PMID: 36692442 DOI: 10.1080/10408347.2023.2165876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS) is a powerful tool and an up-to-date method of analytical chemistry due to its high sensitivity and fingerprint recognition capabilities. Nowadays SERS due to its label-free detection capabilities is being actively developed in medical fields, for example in the analysis of biologically important substances in different matrixes, for potential on-site detection of toxic substances, food safety, and so on. To get the SERS signal, it is necessary the presence of plasmonic nanostructures in the SERS substrates. Electrospun nanofibers have been an attractive alternative to SERS-platforms due to the diversity of advantages, including ease of preparation, structure flexibility, and others. In this review, we summarized the methods of plasmonic nanostructures incorporating substrate based on electrospun nanofibers. Also, the analytical application of SERS-active electrospun nanofibers with embedded nanostructures focused on biologically significant molecules is observed in detail. Finally, the future outlook in the application of these substrates in bioanalysis as the most promising area in analytical chemistry is presented.
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Affiliation(s)
| | - Nadezhda S Komova
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
| | - Anton M Pavlov
- Institute of Physics, Saratov State University, Saratov, Russia
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Pan X, Bai L, Pan C, Liu Z, Ramakrishna S. Design, Fabrication and Applications of Electrospun Nanofiber-Based Surface-Enhanced Raman Spectroscopy Substrate. Crit Rev Anal Chem 2021; 53:289-308. [PMID: 34284659 DOI: 10.1080/10408347.2021.1950522] [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: 02/08/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS) is an advanced and powerful analysis tool. Due to the advantages of high sensitivity, high resolution, and nondestructive testing, it has been widely used in physics, chemistry, material science and other fields. In recent years, substantial progress has been made in developing flexible platforms for the design and fabrication of SERS substrates. One important kind of the flexible platforms is based on electrospun nanofibers. Electrospun nanofibers not only have unique advantages such as easy preparation, high porosity and large specific surface area, but also can increase the number of hotspots when combined with precious metal nanomaterials, thereby enhancing the SERS signal and expanding the application scope. In this review, we firstly focus on two strategies for the fabrication of metal nanostructure decorated in/on the electrospun nanofibers, namely in-situ and ex-situ. Then the applications of these SERS substrates in the fields of quantitative analysis, monitoring chemical reactions and recyclable detection are introduced in detail. Finally, the challenges as well as perspectives are presented to offer a guideline for the future exploration of these SERS substrates. We expect that it will provide new inspiration for the development of electrospun nanofiber-based SERS substrates.
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Affiliation(s)
- Xue Pan
- School of Materials Science and Engineering, Ocean University of China, Qingdao, China
| | - Lu Bai
- Institute for Chemical Biology & Biosensing, and College of Life Sciences, Qingdao University, Qingdao, China
| | - Chengcheng Pan
- School of Materials Science and Engineering, Ocean University of China, Qingdao, China
| | - Zhicheng Liu
- School of Materials Science and Engineering, Ocean University of China, Qingdao, China.,Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
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Yadav S, Satija J. The current state of the art of plasmonic nanofibrous mats as SERS substrates: design, fabrication and sensor applications. J Mater Chem B 2021; 9:267-282. [PMID: 33241248 DOI: 10.1039/d0tb02137g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Surface-enhanced Raman scattering (SERS) is a widely used analytical tool that allows molecular fingerprint-based ultra-sensitive detection through an enhanced electromagnetic field generated by plasmonic metal nanoparticles (MNPs) by virtue of their localized surface plasmon resonance (LSPR). Although significant progress has been made in the design and fabrication of a variety of SERS substrates, MNP-decorated electrospun nanofibrous (NF) mats have attracted much attention due to their unique nanoscale structural and functional properties. This review focuses on the current state of the art in the fabrication of plasmonic NF mats with the main focus on the pre-mix, in situ, and ex situ approaches. The characteristic functional advantages and limitations of these strategies are also highlighted, which might be helpful for the research community when adopting a suitable approach. The potential of these plasmonic NF mats as a SERS-active optical sensor substrate, and their performance parameters such as the limit of detection, analytical range, and enhancement factor, and real-world applications are also discussed. The summary and futuristic discussion in this review might be of significant value in developing plasmonic NF mat-based SERS-active point-of-care diagnostic chips for a wide range of applications.
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Affiliation(s)
- Sangeeta Yadav
- School of Biosciences and Technology (SBST), Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India
| | - Jitendra Satija
- Centre for Nanobiotechnology (CNBT), Vellore Institute of Technology, Vellore, Tamil Nadu 632014, India.
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Murugesan B, Yang J. Tunable Coffee Ring Formation on Polycarbonate Nanofiber Film for Sensitive SERS Detection of Phenylalanine in Urine. ACS OMEGA 2019; 4:14928-14936. [PMID: 31552333 PMCID: PMC6751712 DOI: 10.1021/acsomega.9b01686] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Accepted: 08/21/2019] [Indexed: 05/24/2023]
Abstract
A new method based on the coffee ring effect was developed for improving the sensitivity, simplicity, and robustness of surface-enhanced Raman scattering (SERS) in determining trace levels of analytes. In this method, a polyvinylpyrrolidone (PVP)-stabilized silver colloidal (AgC) solution was first prepared and mixed with a sample solution. Following deposition of the mixture solution on a solid substrate with a rough surface, a coffee ring was formed once the solvent had evaporated. The formation of a coffee ring not only concentrated the analyte but also reduced the space between silver nanoparticles (AgNPs) to strengthen the hotspot effect, thereby considerably improving SERS sensitivity. To strengthen the coffee ring effect further, the surface roughness of the solid support and PVP content of the AgC solution were investigated. The results indicated that an increase in surface roughness reduced the size of the coffee rings, whereas the addition of PVP not only stabilized the AgNPs but also improved the compactness of the coffee rings. When applying the proposed method to determine the phenylalanine (Phe) level in urine for rapid screening of the phenylketonuria disorder, strong chemical interference from uric acid (UA), which is a major component in urine, was observed. To minimize the interference from UA, ZnO powder was applied to the urine sample to adsorb UA prior to SERS detection. After cleaning by using ZnO, the SERS signals of Phe were revealed for quantitative purposes. Under the optimized conditions, both the sensitivity and reproducibility of SERS measurement considerably improved. Quantitative analyses revealed that the developed method is highly feasible for the rapid determination of Phe in real samples.
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Affiliation(s)
| | - Jyisy Yang
- E-mail: . Phone: +886-422840411 ext.
514. Fax: +886-422862547
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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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