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Zhang S, Jin K, Xu J, Ding L, Huang Y, Liu G, Liu X, Jiang S. Aramid nanofiber membrane decorated with monodispersed silver nanoparticles as robust and flexible SERS chips for trace detection of multiple toxic substances. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 308:123720. [PMID: 38091650 DOI: 10.1016/j.saa.2023.123720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/07/2023] [Accepted: 11/28/2023] [Indexed: 01/13/2024]
Abstract
Aramid nanofibers (ANFs) as an innovative nanoscale building block exhibit great potential for novel high-performance multifunctional membranes attributed to their extraordinary performance. However, the application of aramid nanofibers in the field of surface enhanced Raman scattering (SERS) sensing has been rarely reported. In this work, aramid nanofibers derived from commercial Kevlar fibers were synthesized by a facile dimethyl sulfoxide/potassium hydroxide (DMSO/KOH) solution treatment. The monodispersed silver nanoparticle-decorated aramid nanofiber (m-Ag@ANF) membranes were constructed by an efficient vacuum filtration technique. Taking advantages of unique intrinsic properties of ANF, the m-Ag@ANF substrates exhibit good flexibility, excellent mechanical properties and prominent thermal stability. Besides, due to the abundance of positively charged amino-group on the ANF substrates, the negatively charged m-AgNPs were uniformly and firmly deposited on the surface of ANF substrate through electrostatic interactions. As a result, the optimal flexible m-Ag-9@ANF SERS substrate exhibits high sensitivity of 10-9 M for methylene blue (MB) and excellent signal reproducibility (RSD = 6.37 %), as well as outstanding signal stability (up to 15 days). Besides, the 2D Raman mapping and FDTD simulations further reveal prominent signal homogeneity and strong electric field distribution for flexible m-Ag-9@ANF SERS substrate. Finally, it is demonstrated that the flexible m-Ag-9@ANF SERS substrate can also be used for detection of toxic molecules on irregular surfaces by a feasible paste-and-read process. The m-Ag@ANF paper exhibits potential applications as a flexible, low-cost, robust and stable SERS sensing platform for trace detection of toxic materials.
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Affiliation(s)
- Sihang Zhang
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, 570228, China; School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China; Hainan Institute for Food Control, Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Haikou 570314, China
| | - Kejun Jin
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China
| | - Jiangtao Xu
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China
| | - Lei Ding
- Shandong Key Laboratory of Chemical Energy Storage and New Battery Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Yingying Huang
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China
| | - Guilian Liu
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China
| | - Xing Liu
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, 570228, China
| | - Shouxiang Jiang
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China; Research Institute for Intelligent Wearable Systems, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China.
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Xu Y, Zhou Y, Luo H, Li H, Ni T, Xu G, Sugihara O, Xie J, Cai B. Molecularly imprinted polymer-coated hybrid optical waveguides for sub-aM fluorescence sensing. Analyst 2024; 149:800-806. [PMID: 38115790 DOI: 10.1039/d3an01008b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
The sensitivity of fluorescent sensors is crucial for their applications. In this study, we propose a molecularly imprinted polymer (MIP)-coated optical fibre-hybrid waveguide-fibre sensing structure for ultrasensitive fluorescence detection. In such a structure, the MIP coated-hybrid waveguide acts as a sensing probe, and the two co-axially connected optical fibres act as a highly efficient probing light launcher and a fluorescence signal collector, respectively. For the dual-layered waveguide sensing probe, the inner hybrid waveguide core was fabricated using a hollow quartz nanoparticle-hybridized polymer composite with a low refractive index, and the outer MIP coating layer possesses a high refractive index. Simulations showed that this dual-layer configuration can cause light propagation from the waveguide core to the MIP sensing layer with an efficiency of 98%, which is essential for detection. To validate this concept, we adopted a popular fluorescent dye, rhodamine B, to evaluate the sensing characteristics of the proposed system. We achieved an extremely low limit of detection of approximately 1.3 × 10-19 g ml-1 (approximately 0.27 aM).
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Affiliation(s)
- Yingying Xu
- School of Optical Electrical and Computer Engineering, University of Shanghai for Science and Technology, No. 516 Jungong Rd, Shanghai, 200093, China.
| | - Yingtao Zhou
- School of Optical Electrical and Computer Engineering, University of Shanghai for Science and Technology, No. 516 Jungong Rd, Shanghai, 200093, China.
| | - Hong Luo
- School of Optical Electrical and Computer Engineering, University of Shanghai for Science and Technology, No. 516 Jungong Rd, Shanghai, 200093, China.
| | - Hao Li
- School of Optical Electrical and Computer Engineering, University of Shanghai for Science and Technology, No. 516 Jungong Rd, Shanghai, 200093, China.
| | - Tiancheng Ni
- School of Optical Electrical and Computer Engineering, University of Shanghai for Science and Technology, No. 516 Jungong Rd, Shanghai, 200093, China.
| | - Gongjie Xu
- School of Optical Electrical and Computer Engineering, University of Shanghai for Science and Technology, No. 516 Jungong Rd, Shanghai, 200093, China.
| | - Okihiro Sugihara
- Graduate School of Engineering, Utsunomiya University, Utsunomiya 321-8585, Japan
| | - Jingya Xie
- School of Optical Electrical and Computer Engineering, University of Shanghai for Science and Technology, No. 516 Jungong Rd, Shanghai, 200093, China.
| | - Bin Cai
- School of Optical Electrical and Computer Engineering, University of Shanghai for Science and Technology, No. 516 Jungong Rd, Shanghai, 200093, China.
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Weng G, Yang J, Li J, Zhu J, Zhao J. Ag triangle nanoplates assembled on PVC/SEBS membrane as flexible SERS substrates for skin cortisol sensing. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 303:123154. [PMID: 37478705 DOI: 10.1016/j.saa.2023.123154] [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: 04/10/2023] [Revised: 06/25/2023] [Accepted: 07/12/2023] [Indexed: 07/23/2023]
Abstract
Surface-enhanced Raman scattering (SERS) based on rigid substrates has been widely used in biomedical detection due to its high sensitivity and specificity. However, the tedious operation steps for preparing SERS rigid substrates limited their applications in real-world detection. Compared with general rigid substrate, the flexible substrate has the advantages of simple preparation and easy portability, which are suitable for rapid, wearable and personalized detection in the field of point-of-care test. Herein, the flexible SERS substrates employing copolymer were fabricated and used for detection of skin cortisol, a biomarker for evaluating psychological stress in sweat. Silver triangle nanoplates with sharp corner were used as enhanced particles, and transferred to polyvinyl chloride/styrene-ethylene-butene-styrene copolymer (PVC/SEBS) film through three-phase interface self-assembly. By adjusting the size of silver nanoparticles, the ratio of PVC to SEBS in the polymer film, and the number of transfers of self-assembled silver films, the enhancement effect of the flexible SERS substrate was maximized. In addition, functionalization of the flexible SERS substrate with cortisol antibodies is used to achieve specific detection of cortisol on the skin surface. Under the optimal conditions, the Raman peak intensities at 1268 and 1500 cm-1 of the cortisol had a good linear relationship with the logarithm of its concentration in the range of 10-7 to 10-3 M, and the detection limits were 5.47 × 10-8 M and 5.51 × 10-8 M, respectively. The flexible silver triangle nanoplates SERS substrate constructed by self-assembly in the three-phase interface has the characteristics of good specificity and high sensitivity, which has potential for transdermal cortisol wearable detection, providing a feasible method for the rapid evaluating psychological stress level.
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Affiliation(s)
- Guojun Weng
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China
| | - Jianming Yang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China
| | - Jianjun Li
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China
| | - Jian Zhu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China
| | - Junwu Zhao
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, No. 28 Xianning West Road, Xi'an 710049, China.
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Xu D, Zhang T, Zhang S, Li J, Yang W, Jiang H. Centimeter level high surface roughness copper / silver nanoheterostructures for highly sensitive SERS detection. J SOLID STATE CHEM 2023. [DOI: 10.1016/j.jssc.2023.123916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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A smartphone-based ratiometric fluorescence and absorbance dual-mode device for Rhodamine B determination in combination with differential molecularly imprinting strategy and primary inner filter effect correction. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Xu D, Li J, Zhang S, Zhang Y, Yang W, Wang Z, Chen J. A novel and controllable SERS system for crystal violet and Rhodamine B detection based on copper nanonoodle substrates. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 275:121165. [PMID: 35313175 DOI: 10.1016/j.saa.2022.121165] [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: 12/23/2021] [Revised: 02/26/2022] [Accepted: 03/12/2022] [Indexed: 06/14/2023]
Abstract
Copper nanostructures have attracted more and more attention due to low preparation cost, similar thermal conductivity and optical characteristics to silver nanostructures. A novel macroscopic dendritic copper nanonoodles with the length of 3-50 mm prepared by solid-state ionics method at 10 μA direct current electric field (DCEF) using fast ionic conductor RbCu4Cl3I2 films was reported. The surface-enhanced Raman scattering (SERS) performance of prepared copper nanonoodles was detected by crystal violet (CV) and rhodamine B (RB) aqueous solution as analyte molecules. The results present that the copper nanonoodles assembled by short-range order copper nanowires and the diameters of nanowires changed from 20 nm to 80 nm, many regularly arranged nanoparticles with the diameter from 5 to 10 nm existed on the prepared copper nanonoodles, which lead to the nanonoodles have high surface roughness. The copper nanonoodles contain only Cu element, no O element and the fractal dimension of copper nanonoodles is 1.355 because of macroscopic dendritic structures. The prepared copper nanonoodles composed of pure Cu have high surface roughness and the free electrons on the rough copper nanonoodles resonate with the atomic nuclei inside the copper nanonoodles to form a locally enhanced electromagnetic field under the excitation of incident light, so the limiting concentrations for CV and RB detected by the prepared copper nanonoodles are as low as 1 × 10-11 mol/L and 1 × 10-12 mol/L, respectively. The centimeter-scale copper nanonoodles with low limiting concentration of analyte molecules can be used to detect harmful food additives.
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Affiliation(s)
- Dapeng Xu
- School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an 710032, People's Republic of China.
| | - Jiajia Li
- School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an 710032, People's Republic of China
| | - Song Zhang
- School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an 710032, People's Republic of China
| | - Yifan Zhang
- School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an 710032, People's Republic of China
| | - Wei Yang
- School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an 710032, People's Republic of China
| | - Zixiong Wang
- School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an 710032, People's Republic of China
| | - Jian Chen
- School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an 710032, People's Republic of China.
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Ikramova SB, Utegulov ZN, Dikhanbayev KK, Gaipov AE, Nemkayeva RR, Yakunin VG, Savinov VP, Timoshenko VY. Surface-Enhanced Raman Scattering from Dye Molecules in Silicon Nanowire Structures Decorated by Gold Nanoparticles. Int J Mol Sci 2022; 23:ijms23052590. [PMID: 35269733 PMCID: PMC8910339 DOI: 10.3390/ijms23052590] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 02/15/2022] [Accepted: 02/20/2022] [Indexed: 12/04/2022] Open
Abstract
Silicon nanowires (SiNWs) prepared by metal-assisted chemical etching of crystalline silicon wafers followed by deposition of plasmonic gold (Au) nanoparticles (NPs) were explored as templates for surface-enhanced Raman scattering (SERS) from probe molecules of Methylene blue and Rhodamine B. The filling factor by pores (porosity) of SiNW arrays was found to control the SERS efficiency, and the maximal enhancement was observed for the samples with porosity of 55%, which corresponded to dense arrays of SiNWs. The obtained results are discussed in terms of the electromagnetic enhancement of SERS related to the localized surface plasmon resonances in Au-NPs on SiNW's surfaces accompanied with light scattering in the SiNW arrays. The observed SERS effect combined with the high stability of Au-NPs, scalability, and relatively simple preparation method are promising for the application of SiNW:Au-NP hybrid nanostructures as templates in molecular sensorics.
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Affiliation(s)
- Saltanat B. Ikramova
- Faculty of Physics and Technology, Al-Farabi Kazakh National University, 71, Almaty 050040, Kazakhstan; (S.B.I.); (K.K.D.)
| | - Zhandos N. Utegulov
- Department of Physics, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
- Correspondence: (Z.N.U.); (V.Y.T.)
| | - Kadyrjan K. Dikhanbayev
- Faculty of Physics and Technology, Al-Farabi Kazakh National University, 71, Almaty 050040, Kazakhstan; (S.B.I.); (K.K.D.)
| | - Abduzhappar E. Gaipov
- Department of Medicine, Nazarbayev University School of Medicine, Nur-Sultan 010000, Kazakhstan;
| | - Renata R. Nemkayeva
- National Nanotechnology Laboratory Open Type, Faculty of Physics and Technology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan;
| | - Valery G. Yakunin
- Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia; (V.G.Y.); (V.P.S.)
| | - Vladimir P. Savinov
- Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia; (V.G.Y.); (V.P.S.)
| | - Victor Yu Timoshenko
- Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia; (V.G.Y.); (V.P.S.)
- Lebedev Physical Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
- Correspondence: (Z.N.U.); (V.Y.T.)
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