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Chen Y, Sun L, Sun M, Zheng Y. Carbon nanobelts with zigzag and armchair edge and interlocked carbon nanobelts for chirality. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 304:123286. [PMID: 37633098 DOI: 10.1016/j.saa.2023.123286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/13/2023] [Accepted: 08/19/2023] [Indexed: 08/28/2023]
Abstract
This paper presents a theoretical study on the optical properties of carbon nanobelts with zigzag and armchair edges, as well as interlocked carbon nanobelts for chirality. The results demonstrate that two photon absorption (TPA) and electronic circular dichroism (ECD) techniques can effectively differentiate carbon nanoribbons with different boundaries, revealing their relationship and distinguishing features. The findings from this research contribute to a better comprehension of carbon nanoribbons, mechanically interlocked molecules, and chirality.
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Affiliation(s)
- Yu Chen
- School of Physics and Electronic Engineering, Mudanjiang Normal University, Mudanjiang 157011, China
| | - Lichun Sun
- School of Physics and Electronic Engineering, Mudanjiang Normal University, Mudanjiang 157011, China
| | - Mengtao Sun
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China.
| | - Youjin Zheng
- School of Physics and Electronic Engineering, Mudanjiang Normal University, Mudanjiang 157011, China.
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Zhang H, Zhang Z, Wang H, Huang L, Yang Z, Wang Y, Li H. Versatile flexible SERS substrate for in situ detection of contaminants in water and fruits based on Ag NPs decorated wrinkled PDMS film. OPTICS EXPRESS 2023; 31:21025-21037. [PMID: 37381212 DOI: 10.1364/oe.492496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 05/25/2023] [Indexed: 06/30/2023]
Abstract
Flexible surface-enhanced Raman spectroscopy (SERS) substrate has attracted great attention due to its convenient sampling and on-site monitoring capability. However, it is still challenging to fabricate a versatile flexible SERS substrate, which can be used for in situ detection of analytes either in water or on irregular solid surfaces. Here, we report a flexible and transparent SERS substrate based on a wrinkled polydimethylsiloxane (PDMS) film obtained by transferring corrugated structures on the aluminium/polystyrene bilayer film, onto which silver nanoparticles (Ag NPs) are deposited by thermal evaporation. The as-fabricated SERS substrate exhibits a high enhancement factor (∼1.19×105), good signal uniformity (RSD of 6.27%), and excellent batch-to-batch reproducibility (RSD of 7.3%) for rhodamine 6 G. In addition, the Ag NPs@W-PDMS film can maintain high detection sensitivity even after mechanical deformations of bending or torsion for 100 cycles. More importantly, being flexible, transparent, and light, the Ag NPs@W-PDMS film can both float on the water surface and conformally contact with the curved surface for in situ detection. The malachite green in aqueous environment and on apple peel can be easily detected down to 10-6 M with a portable Raman spectrometer. Therefore, it is expected that such a versatile flexible SERS substrate has great potential in on-site, in situ contaminant monitoring for realistic applications.
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HaiYang S, Zhengkun W, Yong Z, Jie Z. Open nanocavity-assisted Ag@PDMS as a soft SERS substrate with ultra-sensitivity and high uniformity. OPTICS EXPRESS 2023; 31:16484-16494. [PMID: 37157726 DOI: 10.1364/oe.492146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
To achieve high sensitivity and uniformity simultaneously in a surface-enhanced Raman scattering (SERS) substrate, this paper presents the preparation of a flexible and transparent three-dimensional (3D) ordered hemispherical array polydimethylsiloxane (PDMS) film. This is achieved by self-assembling a single-layer polystyrene (PS) microsphere array on a silicon substrate. The liquid-liquid interface method is then used to transfer Ag nanoparticles onto the PDMS film, which includes open nanocavity arrays created by etching the PS microsphere array. An open nanocavity assistant soft SERS sample, "Ag@PDMS," is then prepared. For electromagnetic simulation of our sample, we utilized Comsol software. It has been experimentally confirmed that the Ag@PDMS substrate with silver particles of 50 nm in size is capable of achieving the largest localized electromagnetic hot spots in space. The optimal sample, Ag@PDMS, exhibits ultra-high sensitivity towards Rhodamine 6 G (R6G) probe molecules, with a limit of detection (LOD) of 10-15 mol/L, and an enhancement factor (EF) of ∼1012. Additionally, the substrate exhibits a highly uniform signal intensity for probe molecules, with a relative standard deviation (RSD) of approximately 6.86%. Moreover, it is capable of detecting multiple molecules and can perform real detection on non-flat surfaces.
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Faria DL, Scatolino MV, de Oliveira JE, Gonçalves FG, Soriano J, de Paula Protásio T, Lelis RCC, de Carvalho LMH, Mendes LM, Junior JBG. Cardanol-based adhesive with reduced formaldehyde emission to produce particleboards with waste from bean crops. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:48270-48287. [PMID: 36759406 DOI: 10.1007/s11356-023-25764-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 02/02/2023] [Indexed: 02/11/2023]
Abstract
Free formaldehyde is a carcinogen whose emission reduction in particleboard has been studied recently to mitigate this environmental and human health problem. One alternative to reduce the emission of formaldehyde in particleboards is by using adhesives produced from natural sources. Cardanol-formaldehyde is an environmentally friendly adhesive made with cashew nut liquid, a byproduct from the cashew chain. This work aimed to produce particleboard using cardanol-formaldehyde in place of urea. In addition, different proportions of bean straw wastes were used to replace pine wood. The combination of eco-friendly adhesive and lignocellulosic waste particles could result in a product that meets market demands while being environmentally nonaggressive. Cardanol-formaldehyde promoted a higher modulus of elasticity (MOE) (1172 MPa) and modulus of rupture (MOR) (4.39 MPa) about panels glued with urea-formaldehyde, which presented a MOE of 764 MPa and MOR of 2.45 MPa. Furthermore, the cardanol-formaldehyde adhesive promoted a 93% reduction in formaldehyde emission, with a reduction from 16.76 to 1.09 mg/100 g oven-dry board for particleboards produced with cardanol-formaldehyde, indicating potential as an adhesive in the particleboard industry.
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Affiliation(s)
- Douglas Lamounier Faria
- Department of Forest Science, Federal University of Lavras - UFLA, Perimetral Av., POB 3037, Lavras, MG, 37200-900, Brazil.
| | - Mário Vanoli Scatolino
- Agricultural Sciences Center, Federal University of the Semiarid - UFERSA, Mossoró, RN, 59625-900, Brazil
| | - Juliano Elvis de Oliveira
- Department of Engineering, Federal University of Lavras - UFLA, Perimetral Av., POB 3037, Lavras, MG, 37200-900, Brazil
| | - Fabricio Gomes Gonçalves
- Department of Forest and Wood Sciences, Federal University of Espírito Santo - UFES, Governador Carlos Lindemberg Av., 316, Jerônimo Monteiro, ES, 29550-000, Brazil
| | - Julio Soriano
- School of Agricultural Engineering - University of Campinas - UNICAMP, Candido Rondon Av, Campinas, SP, 13083-875, Brazil
| | | | - Roberto Carlos Costa Lelis
- Department of Forest Products, Forest Institute, Federal Rural University of Rio de Janeiro - UFRRJ, BR-465, Km 07, Seropédica, RJ, 23890-000, Brazil
| | - Luisa Maria Hora de Carvalho
- Department of Wood Engineering, School of Technology and Management of Viseu - ESTGV, Campus Politécnico, 3504-510, Viseu, Portugal
| | - Lourival Marin Mendes
- Department of Forest Science, Federal University of Lavras - UFLA, Perimetral Av., POB 3037, Lavras, MG, 37200-900, Brazil
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Liu X, Li M, Yu X, Shen L, Li W. Silent region barcode particle arrays for ultrasensitive multiplexed SERS detection. Biosens Bioelectron 2023; 219:114804. [PMID: 36272345 DOI: 10.1016/j.bios.2022.114804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 09/30/2022] [Accepted: 10/10/2022] [Indexed: 11/19/2022]
Abstract
Suspension arrays are a critical components of next generation multiplexed detection technologies. Current fluorescence suspension arrays are limited by a multiplexed coding ceiling and difficulties with ultrasensitive detection. Raman mode is a promising substitute, but the complex spectral peak distributions and extremely weak intrinsic signal intensity severely diminish Raman signal performance in suspension arrays. To address these limitations, we constructed a Raman suspension array system using plasmonic microbeads as barcode substrates and Au nanoflowers as reporter carriers. The well-designed shell morphology and plasmonic microbead composition enabled significant surface enhancement Raman scattering (SERS) such that we were able to adjust silent region Raman-coding intensity levels. Due to synergistic SERS effects from the plasmonic shell and the multi-branched Au nanoflower nanostructure, the reporting signal was greatly improved, enabling ultrasensitive detection of 5-plexed lung cancer markers. Detection in patient serum samples demonstrated good consistency with the standard electrochemiluminescence method. Thus, this silent region SERS barcode-based suspension array is a developmental advance for modern multiplexed biodetection, potentially providing a powerful early disease screening and diagnosis tool.
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Affiliation(s)
- Xinyi Liu
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, PR China
| | - Meng Li
- Zhejiang Orient Gene Biotech Co., Ltd., 3787 East Yangguang Avenue, Anji, 313300, Zhejiang, PR China
| | - Xujiang Yu
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, PR China
| | - Lisong Shen
- Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, 1665 Kongjiang Road, Shanghai, 200092, PR China
| | - Wanwan Li
- State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, PR China.
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Wang BX, Duan G, Xu W, Xu C, Jiang J, Yang Z, Wu Y, Pi F. Flexible surface-enhanced Raman scatting substrates: recent advances in their principles, design strategies, diversified material selections and applications. Crit Rev Food Sci Nutr 2022; 64:472-516. [PMID: 35930338 DOI: 10.1080/10408398.2022.2106547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Surface-enhanced Raman scattering (SERS) is widely used as a powerful analytical technology in cutting-edge areas such as food safety, biology, chemistry, and medical diagnosis, providing ultra-fast, ultra-sensitive, nondestructive characterization and achieving ultra-high detection sensitivity even down to the single-molecule level. Development of Raman spectroscopy is strongly dependent on high-performance SERS substrates, which have long evolved from the early days of rough metal electrodes to periodic nanopatterned arrays building on solid supporting substrates. For rigid SERS substrates, however, their applications are restricted by sophisticated pretreatments for detecting solid samples with non-planar surfaces. It is therefore essential to reassert the principles in constructing flexible SERS substrates. Herein, we comprehensively review the state-of-the-art in understanding, preparing and using flexible SERS. The basic mechanisms behind the flexible SERS are briefly outlined, typical design strategies are highlighted and diversified selection of materials in preparing flexible SERS substrates are reviewed. Then the recent achievements of various interdisciplinary applications based on flexible SERS substrates are summarized. Finally, the challenges and perspectives for future evolution of flexible SERS and their applications are demonstrated. We propose new research directions focused on stimulating the real potential of SERS as an advanced analytical technique for commercialization.
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Affiliation(s)
- Ben-Xin Wang
- School of Science, Jiangnan University, Wuxi, China
| | - Guiyuan Duan
- School of Science, Jiangnan University, Wuxi, China
| | - Wei Xu
- School of Science, Jiangnan University, Wuxi, China
| | - Chongyang Xu
- School of Science, Jiangnan University, Wuxi, China
| | | | | | - Yangkuan Wu
- School of Science, Jiangnan University, Wuxi, China
| | - Fuwei Pi
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
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Metal Nanoparticles–Polymers Hybrid Materials II. Polymers (Basel) 2022; 14:polym14091901. [PMID: 35567070 PMCID: PMC9101492 DOI: 10.3390/polym14091901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 04/28/2022] [Indexed: 11/28/2022] Open
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Tian X, Yu Q, Kong X, Zhang M. Preparation of Plasmonic Ag@PS Composite via Seed-Mediated In Situ Growth Method and Application in SERS. Front Chem 2022; 10:847203. [PMID: 35360532 PMCID: PMC8963369 DOI: 10.3389/fchem.2022.847203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 02/01/2022] [Indexed: 11/24/2022] Open
Abstract
The colloidal polystyrene (PS) was synthesized and decorated with silver nanoparticles (Ag NPs). The plasmonic Ag@PS nanocomposite was prepared by loading Ag NPs on PS microsphere through a seed-mediated in situ growth route. The property of Ag NPs deposited on the PS microsphere could be precisely controlled by adjusting the concentration of the chemicals used in the growth medium. The growth step is only limited by the diffusion of growing species in the growth media to the surface of the Ag seed. The Ag@PS prepared via the in situ growth method exhibited two advantages compared with the self-assembled PS/Ag. First, the high-density of Ag NPs were successfully deposited on the surface of PS as the electroless-deposited Ag seed process, which brings nearly three times SERS enhancement. Second, the rapid preparation process for in situ growth method (half an hour, 10 h for the self-assembled method). The PS/Ag could detect Nile blue A (NBA) down to 10–7 M by SERS. Furthermore, the plasmonic Ag@PS SERS substrate was used for pesticide identification. The on-site monitoring malachite green (MG) from fish was achieved by portable Raman spectrometer, and the limit of detection (LOD) was 0.02 ppm. The Ag@PS substrate has also shown capability for simultaneously sensing multiple pesticides by SERS.
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Affiliation(s)
- Xiaoran Tian
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, China
| | - Qian Yu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, China
| | - Xianming Kong
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, China
- *Correspondence: Xianming Kong, ; Miao Zhang,
| | - Miao Zhang
- Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden
- *Correspondence: Xianming Kong, ; Miao Zhang,
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Luo W, Xiong W, Han Y, Yan X, Mai L. Application of two-dimensional layered materials in surface-enhanced Raman spectroscopy (SERS). Phys Chem Chem Phys 2022; 24:26398-26412. [DOI: 10.1039/d2cp03650a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
2D materials are promising SERS substrates. Seven feasible strategies to improve the SERS performance of 2D substrate materials are summarized. The prospect of future progress in SERS and possible challenges of 2D layered materials are put forwarded.
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Affiliation(s)
- Wen Luo
- Department of Physical Science & Technology, School of Science, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
- Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Hubei University, Wuhan, 430062, P. R. China
| | - Weiwei Xiong
- Department of Physical Science & Technology, School of Science, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
| | - Yuenan Han
- Department of Physical Science & Technology, School of Science, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
| | - Xin Yan
- Department of Physical Science & Technology, School of Science, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
| | - Liqiang Mai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070 Hubei, China
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