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Liebig F, Sarhan RM, Bargheer M, Schmitt CNZ, Poghosyan AH, Shahinyan AA, Koetz J. Spiked gold nanotriangles: formation, characterization and applications in surface-enhanced Raman spectroscopy and plasmon-enhanced catalysis. RSC Adv 2020; 10:8152-8160. [PMID: 35497869 PMCID: PMC9050016 DOI: 10.1039/d0ra00729c] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 02/12/2020] [Indexed: 11/21/2022] Open
Abstract
We show the formation of metallic spikes on the surface of gold nanotriangles (AuNTs) by using the same reduction process which has been used for the synthesis of gold nanostars. We confirm that silver nitrate operates as a shape-directing agent in combination with ascorbic acid as the reducing agent and investigate the mechanism by dissecting the contribution of each component, i.e., anionic surfactant dioctyl sodium sulfosuccinate (AOT), ascorbic acid (AA), and AgNO3. Molecular dynamics (MD) simulations show that AA attaches to the AOT bilayer of nanotriangles, and covers the surface of gold clusters, which is of special relevance for the spike formation process at the AuNT surface. The surface modification goes hand in hand with a change of the optical properties. The increased thickness of the triangles and a sizeable fraction of silver atoms covering the spikes lead to a blue-shift of the intense near infrared absorption of the AuNTs. The sponge-like spiky surface increases both the surface enhanced Raman scattering (SERS) cross section of the particles and the photo-catalytic activity in comparison with the unmodified triangles, which is exemplified by the plasmon-driven dimerization of 4-nitrothiophenol (4-NTP) to 4,4′-dimercaptoazobenzene (DMAB). We show the formation of metallic spikes on the surface of gold nanotriangles (AuNTs) by using the same reduction process which has been used for the synthesis of gold nanostars leading to a higher SERS enhancement by a factor of 75.![]()
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Affiliation(s)
- Ferenc Liebig
- Institute for Chemistry
- University of Potsdam
- 14476 Potsdam
- Germany
| | - Radwan M. Sarhan
- Chemistry Department
- Faculty of Science
- Cairo University
- Cairo 12613
- Egypt
| | - Matias Bargheer
- Institute for Physics
- University of Potsdam
- 14476 Potsdam
- Germany
| | - Clemens N. Z. Schmitt
- Department of Biomaterials
- Max Planck Institute of Colloids and Interfaces
- 14476 Potsdam
- Germany
| | - Armen H. Poghosyan
- International Scientific-Educational Center of National Academy of Sciences
- 0019 Yerevan
- Armenia
| | - Aram A. Shahinyan
- International Scientific-Educational Center of National Academy of Sciences
- 0019 Yerevan
- Armenia
| | - Joachim Koetz
- Institute for Chemistry
- University of Potsdam
- 14476 Potsdam
- Germany
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Ahmed HB. Cluster growth adaptor for generation of bactericide Ag-Au bimetallic nanostructures: substantiation through spectral mapping data. Int J Biol Macromol 2019; 121:774-783. [DOI: 10.1016/j.ijbiomac.2018.10.088] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 10/01/2018] [Accepted: 10/14/2018] [Indexed: 01/24/2023]
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Carnerero JM, Jimenez‐Ruiz A, Castillo PM, Prado‐Gotor R. Covalent and Non‐Covalent DNA–Gold‐Nanoparticle Interactions: New Avenues of Research. Chemphyschem 2016; 18:17-33. [DOI: 10.1002/cphc.201601077] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Jose M. Carnerero
- Physical Chemistry. Faculty of Chemistry University of Seville C/Profesor Garcia Gonzalez, s/n 41012 Seville Spain
| | - Aila Jimenez‐Ruiz
- Physical Chemistry. Faculty of Chemistry University of Seville C/Profesor Garcia Gonzalez, s/n 41012 Seville Spain
| | - Paula M. Castillo
- Physical Chemistry. Faculty of Chemistry University of Seville C/Profesor Garcia Gonzalez, s/n 41012 Seville Spain
| | - Rafael Prado‐Gotor
- Physical Chemistry. Faculty of Chemistry University of Seville C/Profesor Garcia Gonzalez, s/n 41012 Seville Spain
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Label-free in-situ real-time DNA hybridization kinetics detection employing microfiber-assisted Mach-Zehnder interferometer. Biosens Bioelectron 2016; 81:151-158. [DOI: 10.1016/j.bios.2016.02.065] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 02/24/2016] [Accepted: 02/25/2016] [Indexed: 11/19/2022]
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Calagua A, Alarcon H, Paraguay F, Rodriguez J. Synthesis and Characterization of Bimetallic Gold-Silver Core-Shell Nanoparticles: A Green Approach. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/anp.2015.44013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Chatterjee K, Sarkar S, Jagajjanani Rao K, Paria S. Core/shell nanoparticles in biomedical applications. Adv Colloid Interface Sci 2014; 209:8-39. [PMID: 24491963 DOI: 10.1016/j.cis.2013.12.008] [Citation(s) in RCA: 236] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 12/19/2013] [Accepted: 12/19/2013] [Indexed: 12/21/2022]
Abstract
Nanoparticles have several exciting applications in different areas and biomedial field is not an exception of that because of their exciting performance in bioimaging, targeted drug and gene delivery, sensors, and so on. It has been found that among several classes of nanoparticles core/shell is most promising for different biomedical applications because of several advantages over simple nanoparticles. This review highlights the development of core/shell nanoparticles-based biomedical research during approximately past two decades. Applications of different types of core/shell nanoparticles are classified in terms of five major aspects such as bioimaging, biosensor, targeted drug delivery, DNA/RNA interaction, and targeted gene delivery.
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Cheng XR, Hau BY, Endo T, Kerman K. Au nanoparticle-modified DNA sensor based on simultaneous electrochemical impedance spectroscopy and localized surface plasmon resonance. Biosens Bioelectron 2014; 53:513-8. [DOI: 10.1016/j.bios.2013.10.003] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Revised: 09/27/2013] [Accepted: 10/04/2013] [Indexed: 12/17/2022]
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Huang KS, Yang CH, Kung CP, Grumezescu AM, Ker MD, Lin YS, Wang CY. Synthesis of uniform core-shell gelatin-alginate microparticles as intestine-released oral delivery drug carrier. Electrophoresis 2013; 35:330-6. [DOI: 10.1002/elps.201300194] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 05/28/2013] [Accepted: 06/03/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Keng-Shiang Huang
- The School of Chinese Medicine for Post-Baccalaureate; I-Shou University; Taiwan
| | - Chih-Hui Yang
- Department of Biological Science and Technology; I-Shou University; Taiwan
| | - Chao-Ping Kung
- Department of Biomedical Engineering; I-Shou University; Taiwan
| | - Alexandru Mihai Grumezescu
- Faculty of Applied Chemistry and Materials Science; Department of Science and Engineering of Oxidic Materials and Nanomaterials; University Politehnica of Bucharest; Romania
| | - Ming-Dou Ker
- Department of Electronics Engineering; National Chiao-Tung University; Taiwan
| | - Yung-Sheng Lin
- Department of Applied Cosmetology and Master Program of Cosmetic Science; Hungkuang University; Taiwan
| | - Chih-Yu Wang
- Department of Biomedical Engineering; I-Shou University; Taiwan
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Bi N, Hu M, Zhu H, Qi H, Tian Y, Zhang H. Determination of 6-thioguanine based on localized surface plasmon resonance of gold nanoparticle. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 107:24-30. [PMID: 23416905 DOI: 10.1016/j.saa.2013.01.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 01/03/2013] [Accepted: 01/10/2013] [Indexed: 06/01/2023]
Abstract
Gold nanoparticles exhibit the optical properties of localized surface plamon resonance (LSPR) and are widely applied to the biosensors. The application of gold nanoparticles to the determination of anticancer drug 6-thioguanine (6-TG) was discussed. The binding of 6-TG molecule to the surface of gold nanoparticles alters the local refractive index in the vicinity of the nanoparticles and results in a shift of the LSPR spectrum. The experimental conditions were examined and optimized. Under the optimal conditions, the ratios of absorbances at two wavelengths are directly proportional to the concentrations of 6-TG. The developed method is simple, rapid, and sensitive. In addition, this method is particularly attractive because organic cosolvents, light-sensitive dyes, and sophisticated instruments are not required. This method was successfully applied to the determination of 6-TG in real samples and the results were satisfactory.
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Affiliation(s)
- Ning Bi
- School of Physical and Chemical, Henan Polytechnic University, Jiaozuo 454000, PR China.
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Lu L, Burkey G, Halaciuga I, Goia DV. Core-shell gold/silver nanoparticles: synthesis and optical properties. J Colloid Interface Sci 2012; 392:90-95. [PMID: 23127875 DOI: 10.1016/j.jcis.2012.09.057] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Revised: 08/27/2012] [Accepted: 09/26/2012] [Indexed: 10/27/2022]
Abstract
Highly dispersed gold-silver core-shell nanoparticles were synthesized in a two-step process. The stabilizer-free gold core particles with an average diameter of ~30 nm were first precipitated by rapid reduction of HAuCl(4) with l-ascorbic acid. Thin continuous silver shells of variable thickness were subsequently obtained by reducing controlled amounts of silver nitrate added in the gold sol. The plasmon band of gold gradually blue-shifted and a peak characteristic for silver eventually emerged as the amount of deposited silver increased. A strong and well-defined silver absorption band was recorded when the Ag content exceeded 60 wt.%. It is shown that the concentration of Cl(-) ions in the gold precursor solution plays a critical role in the stability of the bi-metallic sol and the structure of the deposited silver shell.
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Affiliation(s)
- Lu Lu
- Center for Advanced Materials Processing, Clarkson University, Potsdam, NY 13699-5814, USA
| | - Gwendolyn Burkey
- Center for Advanced Materials Processing, Clarkson University, Potsdam, NY 13699-5814, USA
| | - Ionel Halaciuga
- Center for Advanced Materials Processing, Clarkson University, Potsdam, NY 13699-5814, USA
| | - Dan V Goia
- Center for Advanced Materials Processing, Clarkson University, Potsdam, NY 13699-5814, USA.
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Li YC, Chiou CC, Luo JD, Chen WJ, Su LC, Chang YF, Chang YS, Lai CS, Lee CC, Chou C. Sensitive detection of unlabeled oligonucleotides using a paired surface plasma waves biosensor. Biosens Bioelectron 2012; 35:342-348. [PMID: 22480779 DOI: 10.1016/j.bios.2012.03.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 03/08/2012] [Accepted: 03/09/2012] [Indexed: 02/02/2023]
Abstract
Detection of unlabeled oligonucleotides using surface plasmon resonance (SPR) is difficult because of the oligonucleotides' relatively lower molecular weight compared with proteins. In this paper, we describe a method for detecting unlabeled oligonucleotides at low concentration using a paired surface plasma waves biosensor (PSPWB). The biosensor uses a sensor chip with an immobilized probe to detect a target oligonucleotide via sequence-specific hybridization. PSPWB measures the demodulated amplitude of the heterodyne signal in real time. In the meantime, the ratio of the amplitudes between the detected output signal and reference can reduce the excess noise from the laser intensity fluctuation. Also, the common-path propagation of p and s waves cancels the common phase noise induced by temperature variation. Thus, a high signal-to-noise ratio (SNR) of the heterodyne signal is detected. The sequence specificity of oligonucleotide hybridization ensures that the platform is precisely discriminating between target and non-target oligonucleotides. Under optimized experimental conditions, the detected heterodyne signal increases linearly with the logarithm of the concentration of target oligonucleotide over the range 0.5-500 pM. The detection limit is 0.5 pM in this experiment. In addition, the non-target oligonucleotide at concentrations of 10 pM and 10nM generated signals only slightly higher than background, indicating the high selectivity and specificity of this method. Different length of perfectly matched oligonucleotide targets at 10-mer, 15-mer and 20-mer were identified at the concentration of 150 pM.
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Affiliation(s)
- Ying-Chang Li
- Department of Optics and Photonics, National Central University, Taoyuan, 320, Taiwan; Graduate Institute of Electro-Optical Engineering, Chang Gung University, Taoyuan, 333, Taiwan
| | - Chiuan-Chian Chiou
- Department of Medical Biotechnology and Laboratory Science, Chang Gung University, Taoyuan, 333, Taiwan
| | - Ji-Dung Luo
- Department of Medical Biotechnology and Laboratory Science, Chang Gung University, Taoyuan, 333, Taiwan
| | - Wei-Ju Chen
- Graduate Institute of Electro-Optical Engineering, Chang Gung University, Taoyuan, 333, Taiwan
| | - Li-Chen Su
- Department of Optics and Photonics, National Central University, Taoyuan, 320, Taiwan; Graduate Institute of Electro-Optical Engineering, Chang Gung University, Taoyuan, 333, Taiwan
| | - Ying-Feng Chang
- Graduate Institute of Electro-Optical Engineering, Chang Gung University, Taoyuan, 333, Taiwan; Molecular Medicine Research Center, Chang Gung University, Taoyuan, 333, Taiwan
| | - Yu-Sun Chang
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, 333, Taiwan; Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, 333, Taiwan
| | - Chao-Sung Lai
- Department of Electronic Engineering, Chang Gung University, Taoyuan, 333, Taiwan; Biomedical Engineering Research Center, Chang Gung University, Taoyuan, 333, Taiwan
| | - Cheng-Chung Lee
- Department of Optics and Photonics, National Central University, Taoyuan, 320, Taiwan
| | - Chien Chou
- Department of Optics and Photonics, National Central University, Taoyuan, 320, Taiwan; Graduate Institute of Electro-Optical Engineering, Chang Gung University, Taoyuan, 333, Taiwan; Biomedical Engineering Research Center, Chang Gung University, Taoyuan, 333, Taiwan.
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Wu J, Gu M. Microfluidic sensing: state of the art fabrication and detection techniques. JOURNAL OF BIOMEDICAL OPTICS 2011; 16:080901. [PMID: 21895307 DOI: 10.1117/1.3607430] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Here we introduce the existing fabrication techniques, detection methods, and related techniques for microfluidic sensing, with an emphasis on the detection techniques. A general survey and comparison of the fabrication techniques were given, including prototyping (hot embossing, inject molding, and soft lithography) and direct fabrication (laser micromachining, photolithography, lithography, and x-ray lithography) techniques. This is followed by an in-depth look at detection techniques: optical, electrochemical, mass spectrometry, as well as nuclear magnetic resonance spectroscopy-based sensing approaches and related techniques. In the end, we highlight several of the most important issues for future work on microfluidic sensing. This article aims at providing a tutorial review with both introductory materials and inspiring information on microfluidic fabrication and sensing for nonspecialists.
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Affiliation(s)
- Jing Wu
- Zhejiang University, State Key Lab of Modern Optical Instrumentation, Department of Optical Engineering, Institute of Advanced Nanophotonics, Zheda Road 38, Xihu District, Hangzhou, Zhejiang 310027, China.
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Satija J, Bharadwaj R, Sai V, Mukherji S. Emerging use of nanostructure films containing capped gold nanoparticles in biosensors. Nanotechnol Sci Appl 2010; 3:171-88. [PMID: 24198481 DOI: 10.2147/nsa.s8981] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The localized surface plasmon resonance (LSPR) property of gold nanoparticles (GNP) has been exploited in a variety of optical sensor configurations including solution-based bioassays, paper-based colorimetric detection, surface-confined nanoparticle film/array-based sensing, etc. Amongst these, gold nanostructured films are of great interest because of their high stability, good reproducibility, robustness, and cost-effectiveness. The inherent optical characteristics of GNP, are attributed to parameters like size and shape (eg, nanospheres, nanorods, nanostars), eg, LSPR spectral location sensitivity to the local environment, composition (eg, gold-silver or silica-gold nanoshells), sensing volume, mesospacing, and multiplexing. These properties allow sensor tunability, enabling enhanced sensitivity and better performance of these biosensors. Ultrasensitive biosensor designs were realized using gold nanostructured films fabricated by bottom-up as well as top-down approaches. In this review, we describe the past, present, and future trends in the development of GNP-LSPR-based sensors, concentrating on both design (fabrication) and application. In the process, we have discussed various combinations of GNP size and shape, substrate, and application domains.
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Affiliation(s)
- Jitendra Satija
- Department of Bioscience and Bioengineering, IIT Bombay, Mumbai, Maharashtra, India
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