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Yang X, Zeng P, Zhou Y, Wang Q, Zuo J, Duan H, Hu Y. High-performance, large-area flexible SERS substrates prepared by reactive ion etching for molecular detection. NANOTECHNOLOGY 2024; 35:245301. [PMID: 38478979 DOI: 10.1088/1361-6528/ad3363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 03/13/2024] [Indexed: 04/04/2024]
Abstract
In the realm of molecular detection, the surface-enhanced Raman scattering (SERS) technique has garnered increasing attention due to its rapid detection, high sensitivity, and non-destructive characteristics. However, conventional rigid SERS substrates are either costly to fabricate and challenging to prepare over a large area, or they exhibit poor uniformity and repeatability, making them unsuitable for inspecting curved object surfaces. In this work, we present a flexible SERS substrate with high sensitivity as well as good uniformity and repeatability. First, the flexible polydimethylsiloxane (PDMS) substrate is manually formulated and cured. SiO2/Ag layer on the substrate can be obtained in a single process by using ion beam sputtering. Then, reactive ion etching is used to etch the upper SiO2layer of the film, which directly leads to the desired densely packed nanostructure. Finally, a layer of precious metal is deposited on the densely packed nanostructure by thermal evaporation. In our proposed system, the densely packed nanostructure obtained by etching the SiO2layer directly determines the SERS ability of the substrate. The bottom layer of silver mirror can reflect the penetrative incident light, the spacer layer of SiO2and the top layer of silver thin film can further localize the light in the system, which can realize the excellent absorption of Raman laser light, thus enhancing SERS ability. In the tests, the prepared substrates show excellent SERS performance in detecting crystalline violet with a detection limit of 10-11M. The development of this SERS substrate is anticipated to offer a highly effective and convenient method for molecular substance detection.
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Affiliation(s)
- Xing Yang
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Pei Zeng
- State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Yuting Zhou
- Tsinghua Shenzhen International Graduate School, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, People's Republic of China
| | - Qingyu Wang
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People's Republic of China
| | - Jiankun Zuo
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People's Republic of China
- Innovation Institute of the Greater Bay Area, Hunan University, Guangzhou, 511300, People's Republic of China
| | - Huigao Duan
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People's Republic of China
- Innovation Institute of the Greater Bay Area, Hunan University, Guangzhou, 511300, People's Republic of China
- Advanced Manufacturing Laboratory of Micro-Nano Optical Devices, Shenzhen Research Institute, Hunan University, Shenzhen, 518000, People's Republic of China
| | - Yueqiang Hu
- National Research Center for High-Efficiency Grinding, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People's Republic of China
- Advanced Manufacturing Laboratory of Micro-Nano Optical Devices, Shenzhen Research Institute, Hunan University, Shenzhen, 518000, People's Republic of China
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2
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Shi X, Zou J, Chen X, Zheng H, Jin Z, Li F, Piao JG. The Effect of Size on the Surface Enhanced Raman Scattering Property of SiO 2@PDA@AgNP Core-Shell-Satellite Nanocomposite. CHEM LETT 2020. [DOI: 10.1246/cl.200040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xiaowei Shi
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, P. R. China
| | - Jiafeng Zou
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, P. R. China
| | - Xiaojie Chen
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, P. R. China
| | - Hongyue Zheng
- Libraries of Zhejiang Chinese Medical University, Zhejiang Chinese Medical University, Hangzhou 310053, P. R. China
| | - Zhexiu Jin
- Department of Cardiology, The Second Affiliated Hospital of Xiamen Medical College, Xiamen 350003, P. R. China
| | - Fanzhu Li
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, P. R. China
| | - Ji-Gang Piao
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, P. R. China
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3
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Yadav N, Chowdhury PK, Ganguli AK. Mechanistic Insights into the Growth of Anisotropic Nanostructures Inside Reverse Micelles: A Solvation Perspective. J Phys Chem B 2019; 123:5324-5336. [PMID: 31242745 DOI: 10.1021/acs.jpcb.9b02459] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Reverse micelles (RMs) as soft templates have been successfully used in tailoring the structural characteristics (size and morphology) of nanomaterials that in turn have been used in various applications. In this work, we have focused on the local perturbations in the different interior domains of the cetyltrimethylammonium bromide-reverse micelle-based soft template en route to nanorod formation by monitoring the solvation response of coumarin-based solvatochromic probes (C343 and C153). We have observed an appreciable retardation of the solvent coordinate during the initial phases of nanorod growth, which we have attributed to the reorientational motion of the water molecules lodged in the interfacial region. Moreover, these rigid nanostructures leave their imprints on the soft interfacial layer as was observed from the direct correlation in the solvation response of RM-containing nanostructures and respective surfactant aggregates in supernatant solution. Supporting data from time-resolved anisotropy studies further reinforced our conclusions from the solvation experiments. Our study proves that the hydration dynamics can be a promising tool in tracking the heterogeneous growth evolution of nanostructure formation in RMs since solvent reorganization provides insights into the intrinsic, molecular-level features of the micellar assemblies.
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Affiliation(s)
- Nitin Yadav
- Department of Chemistry , Indian Institute of Technology , Hauz Khas, New Delhi 110016 , India
| | - Pramit K Chowdhury
- Department of Chemistry , Indian Institute of Technology , Hauz Khas, New Delhi 110016 , India
| | - Ashok K Ganguli
- Department of Chemistry , Indian Institute of Technology , Hauz Khas, New Delhi 110016 , India
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4
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Jain P, Patra RS, Rajaram S, Narayana C. Designing dendronic-Raman markers for sensitive detection using surface-enhanced Raman spectroscopy. RSC Adv 2019; 9:28222-28227. [PMID: 35530472 PMCID: PMC9071040 DOI: 10.1039/c9ra05359j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Accepted: 09/02/2019] [Indexed: 11/29/2022] Open
Abstract
Surface-Enhanced Raman Spectroscopy (SERS) is well-established as a tool for bio-diagnostics but is often limited by analyte sensitivity and the need for specialized substrates. Signal enhancement can be achieved by attaching multiple Raman markers to a single analyte. Dendronic frameworks with multiple Raman markers attached to the periphery offer an opportunity to examine this idea. In this article, dendrons with thiophenol groups on their periphery were synthesized and tested as a SERS analyte. For this study, simple gold nanoparticles (∼60 nm) were used as a substrate. A 102 fold enhancement in detection was observed upon going from a mono-thiophenol (MT) to a tetra-thiophenol (TT). Dendronic Raman markers increased the probability of SERS occurrence at lower concentrations when compared to a single Raman active molecule. This strategy extends the applicability of SERS, as these analyte molecules can be just mixed or drop-casted on any kind of SERS substrate. A new approach of tuning SERS enhancement with the aid of coupling chemistry for trace detection. A greater number of Raman-active molecules are constrained in a dendronic framework as an improved SERS analyte.![]()
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Affiliation(s)
- Priyanka Jain
- Chemistry and Physics of Materials Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR)
- Bengaluru
- India
- School of Advanced Materials
| | | | - Sridhar Rajaram
- School of Advanced Materials
- JNCASR
- Bengaluru
- India
- International Centre for Materials Science
| | - Chandrabhas Narayana
- Chemistry and Physics of Materials Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR)
- Bengaluru
- India
- School of Advanced Materials
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5
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Hu P, Li B, Bai C, Li X, Lu X. Sum Frequency Generation Vibrational Spectroscopy Using Evanescent Waves—Toward Probing Irregular and Complex Surfaces of Mesoscopic-Scale Materials. Anal Chem 2018; 90:14222-14229. [DOI: 10.1021/acs.analchem.8b03088] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pengcheng Hu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Bolin Li
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Chen Bai
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Xu Li
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Xiaolin Lu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
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6
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Dai X, Rasamani KD, Hall G, Makrypodi R, Sun Y. Geometric Symmetry of Dielectric Antenna Influencing Light Absorption in Quantum-Sized Metal Nanocrystals: A Comparative Study. Front Chem 2018; 6:494. [PMID: 30386774 PMCID: PMC6198039 DOI: 10.3389/fchem.2018.00494] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 09/27/2018] [Indexed: 11/13/2022] Open
Abstract
Silica nanoparticles, optically transparent in the visible spectral region, represent a class of dielectric antenna to tune the propagation and local field distribution of the visible light through surface scattering while the energy loss is minimized. The light scattering on the surface of silica nanoparticles include resonant scattering and random scattering that strongly depend on their geometry: spherical silica nanoparticles with the highest geometrical symmetry favors the light scattering resonances on the nanoparticle surfaces to promote resonant scattering while non-spherical silica nanoparticles mainly support random scattering. Both resonant scattering and random scattering of light on the silica nanoparticles are capable of enhancing the light absorption in quantum-sized metal nanocrystals attached to the surfaces of the silica nanoparticles. The contributions of resonant scattering and random scattering to the enhancement of light absorption have been compared and discussed. The understanding highlights the importance of the geometry of the silica nanoparticle antenna on the design and synthesis of composite materials for efficient light harvesting.
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Affiliation(s)
| | | | | | | | - Yugang Sun
- Department of Chemistry, Temple University, Philadelphia, PA, United States
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7
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Sharvani S, Upadhayaya K, Kumari G, Narayana C, Shivaprasad SM. Nano-morphology induced additional surface plasmon resonance enhancement of SERS sensitivity in Ag/GaN nanowall network. NANOTECHNOLOGY 2015; 26:465701. [PMID: 26502004 DOI: 10.1088/0957-4484/26/46/465701] [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
The GaN nanowall network, formed by opening the screw dislocations by kinetically controlled MBE growth, possesses a large surface and high conductivity. Sharp apexed nanowalls show higher surface electron concentration in the band-tail states, in comparison to blunt apexed nanowalls. Uncapped silver nanoparticles are vapor deposited on the blunt and sharp GaN nanowall networks to study the morphological dependence of band-edge plasmon-coupling. Surface enhanced Raman spectroscopy studies performed with a rhodamine 6G analyte on these two configurations clearly show that the sharp nanowall morphology with smaller Ag nanoparticles shows higher enhancement of the Raman signal. A very large enhancement factor of 2.8 × 10(7) and a very low limit of detection of 10(-10) M is observed, which is attributed to the surface plasmon resonance owing to the high surface electron concentration on the GaN nanowall in addition to that of the Ag nanoparticles. The significantly higher sensitivity with same-sized Ag nanoparticles confirms the unconventional role of morphology-dependent surface charge carrier concentration of GaN nanowalls in the enhancement of Raman signals.
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Affiliation(s)
- S Sharvani
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore-560064, India
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8
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Sharma S, Yadav N, Chowdhury PK, Ganguli AK. Controlling the Microstructure of Reverse Micelles and Their Templating Effect on Shaping Nanostructures. J Phys Chem B 2015; 119:11295-306. [DOI: 10.1021/acs.jpcb.5b03063] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Soma Sharma
- Department
of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
- Department
of Chemistry, Central University of Haryana, Jant-Pali, Mahendragarh, Haryana 123029, India
| | - Nitin Yadav
- Department
of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
| | - Pramit K. Chowdhury
- Department
of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
| | - Ashok K. Ganguli
- Department
of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
- Institute of Nano Science & Technology, Phase X, Mohali, Punjab 160062, India
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9
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Xiong S, Wang Y, Zhu J, Yu J, Hu Z. Mussel-adhesive-inspired fabrication of multifunctional silver nanoparticle assemblies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:5504-5512. [PMID: 25919224 DOI: 10.1021/acs.langmuir.5b00820] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The assembly of metal nanoparticles (NPs) has attracted a great deal of attention recently because of their collective properties that could not be exhibited by individual NPs. Here a one-step approach was reported for the fabrication of spherical silver NP assemblies (AgNAs). The formation of AgNAs simply included the stirring of silver ammonia and 3,4-dihydroxy-l-phenylalanine (DOPA) in aqueous solution at room temperature, in which DOPA acted as a reductant for AgNPs first because of its reducing ability and then directed the assembly of AgNPs into AgNAs. The AgNAs exhibited hierarchical structure with controllable sizes ranging from 180 to 610 nm by adjusting the concentrations of reagents. The two individual components, AgNPs and polyDOPA, also allowed AgNAs with multiple functions as demonstrated in this study of durable catalytic activity, high SERS sensitivity, and good antioxidant properties. The thin polyDOPA layer coated on AgNAs further offered the opportunity to modify the surface of AgNAs. The results presented here may provide a green and facile approach to designing multifunctional NP assemblies.
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Affiliation(s)
- Shuqiang Xiong
- †State Key Laboratory for Modification of Chemical Fibers and Polymer Materials and ‡College of Material Science and Engineering, Donghua University, 201620 Shanghai, PR China
| | - Yan Wang
- †State Key Laboratory for Modification of Chemical Fibers and Polymer Materials and ‡College of Material Science and Engineering, Donghua University, 201620 Shanghai, PR China
| | - Jing Zhu
- †State Key Laboratory for Modification of Chemical Fibers and Polymer Materials and ‡College of Material Science and Engineering, Donghua University, 201620 Shanghai, PR China
| | - Junrong Yu
- †State Key Laboratory for Modification of Chemical Fibers and Polymer Materials and ‡College of Material Science and Engineering, Donghua University, 201620 Shanghai, PR China
| | - Zuming Hu
- †State Key Laboratory for Modification of Chemical Fibers and Polymer Materials and ‡College of Material Science and Engineering, Donghua University, 201620 Shanghai, PR China
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10
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Gupta R, Siddhanta S, Mettela G, Chakraborty S, Narayana C, Kulkarni GU. Solution processed nanomanufacturing of SERS substrates with random Ag nanoholes exhibiting uniformly high enhancement factors. RSC Adv 2015. [DOI: 10.1039/c5ra17119a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
An Ag film exhibits an enhanced Raman signal over unusually large areas due to surface plasmons around its nanoholes. The SERS signal is increased by optical interference effects and the uniformity of the signal is improved by electrical activation.
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Affiliation(s)
- Ritu Gupta
- Thematic Unit of Excellence on Nanochemistry and Chemistry and Physics of Materials Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR)
- Bangalore 560064
- India
- Department of Chemistry
| | - Soumik Siddhanta
- Light Scattering Laboratory
- Chemistry and Physics of Materials Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR)
- Bangalore 560064
- India
| | - Gangaiah Mettela
- Thematic Unit of Excellence on Nanochemistry and Chemistry and Physics of Materials Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR)
- Bangalore 560064
- India
| | - Swati Chakraborty
- Thematic Unit of Excellence on Nanochemistry and Chemistry and Physics of Materials Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR)
- Bangalore 560064
- India
| | - Chandrabhas Narayana
- Light Scattering Laboratory
- Chemistry and Physics of Materials Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR)
- Bangalore 560064
- India
| | - Giridhar U. Kulkarni
- Thematic Unit of Excellence on Nanochemistry and Chemistry and Physics of Materials Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR)
- Bangalore 560064
- India
- Centre for Nano and Soft Matter Sciences
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11
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Jayram ND, Sonia S, Kumar PS, Marimuthu L, Masuda Y, Mangalaraj D, Ponpandian N, Viswanathan C, Ramakrishna S. Highly monodispersed Ag embedded SiO2 nanostructured thin film for sensitive SERS substrate: growth, characterization and detection of dye molecules. RSC Adv 2015. [DOI: 10.1039/c5ra04355g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Highly monodispersed Ag embedded SiO2 nanostructured thin films have been synthesized and their sensitivity towards SERS investigated.
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Affiliation(s)
- Naidu Dhanpal Jayram
- Department of Nanoscience and Technology
- Bharathiar University
- Coimbatore-641 046
- India
| | - S. Sonia
- Department of Nanoscience and Technology
- Bharathiar University
- Coimbatore-641 046
- India
| | - Palaniswamy Suresh Kumar
- Environmental & Water Technology
- Centre of Innovation
- Ngee Ann Polytechnic
- Singapore 599489
- Singapore
| | - L. Marimuthu
- Department of Nanoscience and Technology
- Bharathiar University
- Coimbatore-641 046
- India
| | - Yoshitake Masuda
- National Institute of Advanced Industrial Science and Technology (AIST)
- Nagoya 463-8560
- Japan
| | - D. Mangalaraj
- Department of Nanoscience and Technology
- Bharathiar University
- Coimbatore-641 046
- India
| | - N. Ponpandian
- Department of Nanoscience and Technology
- Bharathiar University
- Coimbatore-641 046
- India
| | - C. Viswanathan
- Department of Nanoscience and Technology
- Bharathiar University
- Coimbatore-641 046
- India
| | - Seeram Ramakrishna
- Center for Nanofibers and Nanotechnology
- Department of Mechanical Engineering
- National University of Singapore
- Singapore 117576
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12
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Huang Y, Kannan P, Zhang L, Rong Y, Dai L, Huang R, Chen T. Close-packed assemblies of discrete tiny silver nanoparticles on triangular gold nanoplates as a high performance SERS probe. RSC Adv 2015. [DOI: 10.1039/c5ra18195j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An island like array of tiny Ag nanoparticles bounded on triangular Au nanoplates was synthesized as surface-enhanced Raman spectroscopy substrate.
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Affiliation(s)
- Youju Huang
- Division of Polymer and Composite Materials
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo 315201
- China
| | - Palanisamy Kannan
- Singapore Centre on Environmental Life Science Engineering (SCELSE)
- Nanyang Technological University
- Singapore
| | - Lei Zhang
- Division of Polymer and Composite Materials
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo 315201
- China
| | - Yun Rong
- Division of Polymer and Composite Materials
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo 315201
- China
| | - Liwei Dai
- Division of Polymer and Composite Materials
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo 315201
- China
| | - Rongqin Huang
- Key Laboratory of Smart Drug Delivery
- Ministry of Education (Fudan University)
- Shanghai 201203
- China
| | - Tao Chen
- Division of Polymer and Composite Materials
- Ningbo Institute of Material Technology and Engineering
- Chinese Academy of Science
- Ningbo 315201
- China
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13
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Kumar J, Thomas R, Swathi RS, Thomas KG. Au nanorod quartets and Raman signal enhancement: towards the design of plasmonic platforms. NANOSCALE 2014; 6:10454-10459. [PMID: 24875403 DOI: 10.1039/c4nr00170b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Quartets of Au nanorods were designed by combining the methodologies of lateral and longitudinal assemblies. A high electric field prevailing at the quartet junctions results in large enhancement in the Raman signals of molecules. FDTD simulations showed that the displacement of the lateral dimers in quartets expands the scope of hot spot distribution.
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Affiliation(s)
- Jatish Kumar
- Photosciences and Photonics, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, India
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14
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Wu W, Maye MM. Discrete Dipole Approximation Analysis of Plasmonic Core/Alloy Nanoparticles. Chemphyschem 2014; 15:2582-7. [DOI: 10.1002/cphc.201402082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Indexed: 11/08/2022]
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15
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Chen X, Jiang C, Yu S. Nanostructured materials for applications in surface-enhanced Raman scattering. CrystEngComm 2014. [DOI: 10.1039/c4ce01383b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This highlight summarizes current advances in the design and the employment of nanostructured materials in SERS substrates especially from the dimensional point of view. We then talk about synthesis methods and the novel properties of these nanostructured materials with their potential applications in SERS.
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Affiliation(s)
- Xiaochun Chen
- School of Chemistry and Chemical Engineering
- Hefei University of Technology and Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering
- Hefei, China
| | - Changlong Jiang
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei, China
| | - Shaoming Yu
- School of Chemistry and Chemical Engineering
- Hefei University of Technology and Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering
- Hefei, China
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16
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Li M, Cushing SK, Zhang J, Suri S, Evans R, Petros WP, Gibson LF, Ma D, Liu Y, Wu N. Three-dimensional hierarchical plasmonic nano-architecture enhanced surface-enhanced Raman scattering immunosensor for cancer biomarker detection in blood plasma. ACS NANO 2013; 7:4967-76. [PMID: 23659430 PMCID: PMC3732798 DOI: 10.1021/nn4018284] [Citation(s) in RCA: 165] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A three-dimensional (3D) hierarchical plasmonic nano-architecture has been designed for a sensitive surface-enhanced Raman scattering (SERS) immunosensor for protein biomarker detection. The capture antibody molecules are immobilized on a plasmonic gold triangle nanoarray pattern. On the other hand, the detection antibody molecules are linked to the gold nanostar@Raman reporter@silica sandwich nanoparticles. When protein biomarkers are present, the sandwich nanoparticles are captured over the gold triangle nanoarray, forming a confined 3D plasmonic field, leading to the enhanced electromagnetic field in intensity and in 3D space. As a result, the Raman reporter molecules are exposed to a high density of "hot spots", which amplifies the Raman signal remarkably, improving the sensitivity of the SERS immunosensor. This SERS immunosensor exhibits a wide linear range (0.1 pg/mL to 10 ng/mL) and a low limit of detection (7 fg/mL) toward human immunoglobulin G protein in the buffer solution. This biosensor has been successfully used for detection of the vascular endothelial growth factor in the human blood plasma from clinical breast cancer patient samples.
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Affiliation(s)
- Ming Li
- Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, WV 26506-6106, USA
| | - Scott K. Cushing
- Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, WV 26506-6106, USA
- Department of Physics, West Virginia University, Morgantown, WV 26506, USA
| | - Jianming Zhang
- Institut National de la Recherche Scientifique, INRS-Énergie, Matériaux et Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1S2, Canada
| | - Savan Suri
- Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, WV 26506-6106, USA
| | - Rebecca Evans
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV 26506, USA
- Alexander B. Osborn Hematopoietic Malignancy and Transplantation Program of the Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, USA
| | - William P. Petros
- Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV 26506, USA
- Alexander B. Osborn Hematopoietic Malignancy and Transplantation Program of the Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, USA
| | - Laura F. Gibson
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV 26506, USA
- Alexander B. Osborn Hematopoietic Malignancy and Transplantation Program of the Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV 26506, USA
| | - Dongling Ma
- Institut National de la Recherche Scientifique, INRS-Énergie, Matériaux et Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1S2, Canada
| | - Yuxin Liu
- Lane Department of Computer Science and Electrical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Nianqiang Wu
- Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, WV 26506-6106, USA
- Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV 26506, USA
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17
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Chang L, Ding Y, Li X. Surface molecular imprinting onto silver microspheres for surface enhanced Raman scattering applications. Biosens Bioelectron 2013; 50:106-10. [PMID: 23838276 DOI: 10.1016/j.bios.2013.06.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 06/01/2013] [Accepted: 06/03/2013] [Indexed: 11/16/2022]
Abstract
A simple route for the synthesis of core-shell Ag-molecularly imprinted polymer (Ag@MIP) hybrid was proposed. Silver microspheres were first fabricated by the acid-directed self-assembly technique, and then they were modified using coupling agent, core-shell Ag@MIP hybrid were finally obtained through surface molecular imprinting technique. The morphology and structure of the resulting hybrid were characterized by X-ray diffraction, energy dispersive spectroscopy, transmission and scanning electron microscopy, and Fourier transform infrared spectroscopy. The obtained Ag@MIP substrate is extremely high surface enhanced Raman scattering (SERS) activity toward the target molecule 4-mercaptobenzoic acid (4-MBA),and exhibits a 10(-15)M detection limit. The SERS signals of 4-MBA show good reproducibility and selectivity. A possible mechanism for our SERS enhancement was briefly discussed using a molecularly imprinting "gate effect" model. Our experimental results show that the Ag@MIP hybrid as SERS platform is potential for ultrasensitive sensing and analytical applications.
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Affiliation(s)
- Limin Chang
- School of Chemistry, Jilin Normal University, Siping 136000, China.
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18
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Zhu H, Wang Y, Wang Y, Zhao S, Zhao M, Gui L, Xu W, Chen XA, Wang Y, Peng S. Folded Conformation, Cyclic Pentamer, Nano-Structure and PAD4 Binding Mode of YW3-56. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2013; 117:10070-10078. [PMID: 23795230 PMCID: PMC3685498 DOI: 10.1021/jp311726k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The physical and chemical mechanisms of small molecules with pharmacological activity forming nano-structures are developing into a new field of nano-medicine. By using ROESY 2D NMR spectroscopy, trandem mass spectroscopy, transmission electron microscopy and computer-assisted molecular modeling, this paper demonstrated the contribution of the folded conformation, the intra- and intermolecular π-π stacking, the intra- and intermolecular hydrogen bonds, and the receptor binding free energy of 6-dimethylaminonaph-2-yl-{N-S-[1-benzylcarba-moyl-4-(2-chloroacetamidobutyl)]-carboxamide (YW3-56) to the rapid formation of nano-rings and the slow formation of nano-capsules. Thus we have developed a strategy that makes it possible to elucidate the physical and chemical mechanisms of bioactive small molecules forming nano-structures.
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Affiliation(s)
- Haimei Zhu
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
| | - Yuji Wang
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
| | - Yaonan Wang
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
| | - Shurui Zhao
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
| | - Ming Zhao
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Lin Gui
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
| | - Wenyun Xu
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
| | - Xiangyun Amy Chen
- Center for Eukaryotic Gene Regulation, Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA
| | - Yanming Wang
- Center for Eukaryotic Gene Regulation, Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA
| | - Shiqi Peng
- College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, P.R. China
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Li S, Xu P, Ren Z, Zhang B, Du Y, Han X, Mack NH, Wang HL. Fabrication of thorny Au nanostructures on polyaniline surfaces for sensitive surface-enhanced Raman spectroscopy. ACS APPLIED MATERIALS & INTERFACES 2013; 5:49-54. [PMID: 23234505 DOI: 10.1021/am301881q] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Here we demonstrate, for the first time, the fabrication of Au nanostructures on polyaniline (PANI) membrane surfaces for surface enhanced Raman spectroscopy (SERS) applications, through a direct chemical reduction by PANI. Introduction of acids into the HAuCl(4) solution leads to homogeneous Au structures on the PANI surfaces, which show only sub-ppm detection levels toward the target analyte, 4-mercaptobenzoic acid (4-MBA), because of limited surface area and lack of surface roughness. Thorny Au nanostructures can be obtained through controlled reaction conditions and the addition of a capping agent poly (vinyl pyrrolidone) (PVP) in the HAuCl(4) solution and the temperature kept at 80 °C in an oven. Those thorny Au nanostructures, with higher surface areas and unique geometric feature, show a SERS detection sensitivity of 1 × 10(-9) M (sub-ppb level) toward two different analyte molecules, 4-MBA and Rhodamine B, demonstrating their generality for SERS applications. These highly sensitive SERS-active substrates offer novel robust structures for trace detection of chemical and biological analytes.
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Affiliation(s)
- Siwei Li
- Department of Chemistry, Harbin Institute of Technology, Harbin 150001, China
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