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Harper-Leatherman AS, Wallace JM, Long JW, Rhodes CP, Graffam ME, Abunar BH, Rolison DR. Redox Cycling within Nanoparticle-Nucleated Protein Superstructures: Electron Transfer between Nanoparticulate Gold, Molecular Reductant, and Cytochrome c. J Phys Chem B 2021; 125:1735-1745. [PMID: 33576630 DOI: 10.1021/acs.jpcb.0c09688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We previously described how thousands of the heme protein cytochrome c (cyt.c) self-organize into multilayered, roughly spherical superstructures as initiated by nucleation around one colloidal gold or silver nanoparticle. Within these superstructures, the protein is stabilized to unfolding in buffered media and survives superstructure encapsulation within silica gels and processing to form bioaerogels. We now report that Au∼cyt.c superstructures in buffered media are not simply static groupings of proteins, but that the Au core and protein corona exhibit dynamic electron-transfer reactions within the superstructure as verified by UV-visible and resonance Raman spectroscopy. Within the superstructure, hundreds to thousands of ferricytochrome c (FeIII-cyt.c) are reduced to ferrocytochrome c (FeII-cyt.c) following first-order kinetics with an average apparent forward rate constant of 1.9 ±0.4 × 10-5 s-1. The reducing power in the microheterogeneous medium is derived from two multielectron reductants: tannic acid used to stabilize the commercial gold sol and the Au nanoparticle at the center of the protein superstructure. Fluorescence monitoring of guanidinium chloride-induced unfolding reveals that superstructure-associated cyt.c is stabilized to unfolding before and after chemical reduction of FeIII-cyt.c to form FeII-cyt.c, indicating that the superstructures remain intact during microheterogeneous redox reactions. Smaller nucleating Au nanoparticles or lower ionic strength in the buffered medium yields a greater extent of cyt.c reduction. Partial oxidation of the cyt.c-associated nanoparticulate Au is verified by X-ray photoelectron spectroscopy. The Au nanoparticle at the heart of the superstructure functions as a direct electron donor to the heme with oxidized Au atoms being recycled back to Au(0) as long as residual tannic acid, derived from the Au sol mother liquor, is present in the aqueous microheterogeneous medium.
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Affiliation(s)
- Amanda S Harper-Leatherman
- Department of Chemistry and Biochemistry, Fairfield University, 1073 North Benson Road, Fairfield, Connecticut 06824, United States
| | - Jean Marie Wallace
- Nova Research, Inc., 1900 Elkin Street, Alexandria, Virginia 22308, United States
| | - Jeffrey W Long
- Surface Chemistry Branch, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
| | - Christopher P Rhodes
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas 78666, United States
| | - Molly E Graffam
- Department of Chemistry and Biochemistry, Fairfield University, 1073 North Benson Road, Fairfield, Connecticut 06824, United States
| | - Bayan H Abunar
- Department of Chemistry and Biochemistry, Fairfield University, 1073 North Benson Road, Fairfield, Connecticut 06824, United States
| | - Debra R Rolison
- Surface Chemistry Branch, U.S. Naval Research Laboratory, Washington, D.C. 20375, United States
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2
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Ali A, Hwang EY, Choo J, Lim DW. PEGylated nanographene-mediated metallic nanoparticle clusters for surface enhanced Raman scattering-based biosensing. Analyst 2018; 143:2604-2615. [DOI: 10.1039/c8an00329g] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We demonstrate PEGylated nano-sized graphene-induced AuNP clusters, which could serve as SERS nanotags for highly sensitive SERS-based biosensing.
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Affiliation(s)
- Ahmed Ali
- Department of Bionano Engineering and Bionanotechnology
- College of Engineering Sciences
- Hanyang University
- Ansan
- Republic of Korea
| | - Eun Young Hwang
- Department of Bionano Engineering and Bionanotechnology
- College of Engineering Sciences
- Hanyang University
- Ansan
- Republic of Korea
| | - Jaebum Choo
- Department of Bionano Engineering and Bionanotechnology
- College of Engineering Sciences
- Hanyang University
- Ansan
- Republic of Korea
| | - Dong Woo Lim
- Department of Bionano Engineering and Bionanotechnology
- College of Engineering Sciences
- Hanyang University
- Ansan
- Republic of Korea
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3
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Matteini P, Cottat M, Tavanti F, Panfilova E, Scuderi M, Nicotra G, Menziani MC, Khlebtsov N, de Angelis M, Pini R. Site-Selective Surface-Enhanced Raman Detection of Proteins. ACS NANO 2017; 11:918-926. [PMID: 27960057 DOI: 10.1021/acsnano.6b07523] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Strategies for protein detection via surface-enhanced Raman spectroscopy (SERS) currently exploit the formation of randomly generated hot spots at the interfaces of metal colloidal nanoparticles, which are clustered together by intrusive chemical or physical processes in the presence of the target biomolecule. We propose a different approach based on selective and quantitative gathering of protein molecules at regular hot spots generated on the corners of individual silver nanocubes in aqueous medium at physiological pH. Here, the protein, while keeping its native configuration, experiences an intense local E-field, which boosts SERS efficiency and detection sensitivity. Uncontrolled signal fluctuations caused by variable molecular adsorption to different particle areas or inside clustered nanoparticles are circumvented. Advanced electron microscopy analyses and computational simulations outline a strategy relying on a site-selective mechanism with superior Raman signal enhancement, which offers the perspective of highly controlled and reproducible routine SERS detection of proteins.
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Affiliation(s)
- Paolo Matteini
- Institute of Applied Physics "Nello Carrara", National Research Council , via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Maximilien Cottat
- Institute of Applied Physics "Nello Carrara", National Research Council , via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Francesco Tavanti
- Department of Chemical and Geological Sciences, University of Modena e Reggio Emilia , via Campi 103, 41125 Modena, Italy
| | - Elizaveta Panfilova
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences , 13 Prospekt Entuziastov, 410049 Saratov, Russia
| | - Mario Scuderi
- Institute for Microelectronics and Microsystems, National Research Council , zona industriale strada VIII n.5, 95121 Catania, Italy
| | - Giuseppe Nicotra
- Institute for Microelectronics and Microsystems, National Research Council , zona industriale strada VIII n.5, 95121 Catania, Italy
| | - Maria Cristina Menziani
- Department of Chemical and Geological Sciences, University of Modena e Reggio Emilia , via Campi 103, 41125 Modena, Italy
| | - Nikolai Khlebtsov
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences , 13 Prospekt Entuziastov, 410049 Saratov, Russia
- Saratov National Research State University , 83 Ulitsa Astrakhanskaya, 410012 Saratov, Russia
| | - Marella de Angelis
- Institute of Applied Physics "Nello Carrara", National Research Council , via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Roberto Pini
- Institute of Applied Physics "Nello Carrara", National Research Council , via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
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4
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Shin K, Cho JH, Yoon MY, Chung H. Use of Multiple Peptide-Based SERS Probes Binding to Different Epitopes on a Protein Biomarker To Improve Detection Sensitivity. Anal Chem 2016; 88:3465-70. [DOI: 10.1021/acs.analchem.5b04873] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Kayeong Shin
- Department of Chemistry and
Research Institute for Natural Sciences, College of Natural Sciences, Hanyang University, Seoul, 133-791, Korea
| | - Jun-Haeng Cho
- Department of Chemistry and
Research Institute for Natural Sciences, College of Natural Sciences, Hanyang University, Seoul, 133-791, Korea
| | - Moon-Young Yoon
- Department of Chemistry and
Research Institute for Natural Sciences, College of Natural Sciences, Hanyang University, Seoul, 133-791, Korea
| | - Hoeil Chung
- Department of Chemistry and
Research Institute for Natural Sciences, College of Natural Sciences, Hanyang University, Seoul, 133-791, Korea
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5
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Kitahama Y, Ozaki Y. Surface-enhanced resonance Raman scattering of hemoproteins and those in complicated biological systems. Analyst 2016; 141:5020-36. [DOI: 10.1039/c6an01009a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The SERRS spectra of heme are influenced by structural changes, orientation, and selective adsorption on the Ag surface.
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Affiliation(s)
- Yasutaka Kitahama
- Department of Chemistry
- School of Science and Technology
- Kwansei Gakuin University
- Sanda
- Japan
| | - Yukihiro Ozaki
- Department of Chemistry
- School of Science and Technology
- Kwansei Gakuin University
- Sanda
- Japan
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6
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Green Synthesis and Spectroscopic Characterization of Nanoparticles. NANOSCIENCE IN FOOD AND AGRICULTURE 1 2016. [DOI: 10.1007/978-3-319-39303-2_3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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7
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Guo X, Fu Y, Fu S, Wang H, Yang T, Wen Y, Yang H. Improving SERS Activity of Inositol Hexaphosphate Capped Silver Nanoparticles: Fe3+ as a Switcher. Inorg Chem 2014; 53:7227-32. [DOI: 10.1021/ic5003836] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaoyu Guo
- Department
of Chemistry, Key Laboratory of Resource Chemistry of Ministry of
Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, People’s Republic of China
| | - Yichen Fu
- Department
of Chemistry, Key Laboratory of Resource Chemistry of Ministry of
Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, People’s Republic of China
| | - Shuyue Fu
- Department
of Chemistry, Key Laboratory of Resource Chemistry of Ministry of
Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, People’s Republic of China
| | - Hui Wang
- Department
of Chemistry, Key Laboratory of Resource Chemistry of Ministry of
Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, People’s Republic of China
| | - Tianxi Yang
- Department
of Chemistry, Key Laboratory of Resource Chemistry of Ministry of
Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, People’s Republic of China
| | - Ying Wen
- Department
of Chemistry, Key Laboratory of Resource Chemistry of Ministry of
Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, People’s Republic of China
| | - Haifeng Yang
- Department
of Chemistry, Key Laboratory of Resource Chemistry of Ministry of
Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, People’s Republic of China
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8
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Selvakannan P, Ramanathan R, Plowman BJ, Sabri YM, Daima HK, O'Mullane AP, Bansal V, Bhargava SK. Probing the effect of charge transfer enhancement in off resonance mode SERS via conjugation of the probe dye between silver nanoparticles and metal substrates. Phys Chem Chem Phys 2014; 15:12920-9. [PMID: 23812309 DOI: 10.1039/c3cp51646f] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The charge transfer-mediated surface enhanced Raman scattering (SERS) of crystal violet (CV) molecules that were chemically conjugated between partially polarized silver nanoparticles and optically smooth gold and silver substrates has been studied under off-resonant conditions. Tyrosine molecules were used as a reducing agent to convert silver ions into silver nanoparticles where oxidised tyrosine caps the silver nanoparticle surface with its semiquinone group. This binding through the quinone group facilitates charge transfer and results in partially oxidised silver. This establishes a chemical link between the silver nanoparticles and the CV molecules, where the positively charged central carbon of CV molecules can bind to the terminal carboxylate anion of the oxidised tyrosine molecules. After drop casting Ag nanoparticles bound with CV molecules it was found that the free terminal amine groups tend to bind with the underlying substrates. Significantly, only those CV molecules that were chemically conjugated between the partially polarised silver nanoparticles and the underlying gold or silver substrates were found to show SERS under off-resonant conditions. The importance of partial charge transfer at the nanoparticle/capping agent interface and the resultant conjugation of CV molecules to off resonant SERS effects was confirmed by using gold nanoparticles prepared in a similar manner. In this case the capping agent binds to the nanoparticle through the amine group which does not facilitate charge transfer from the gold nanoparticle and under these conditions SERS enhancement in the sandwich configuration was not observed.
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Affiliation(s)
- Pr Selvakannan
- Center for Advanced Materials and Industrial Chemistry (CAMIC), School of Applied Sciences, RMIT University, Melbourne, VIC 3001, Australia
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9
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Culha M. Surface-enhanced Raman scattering: an emerging label-free detection and identification technique for proteins. APPLIED SPECTROSCOPY 2013; 67:355-364. [PMID: 23601534 DOI: 10.1366/12-06895] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The detection and identification of biologically important molecules has critical importance in several fields such as medicine, biotechnology, and pharmacology. Surface-enhanced Raman scattering (SERS) is a powerful emerging vibrational spectroscopic technique that allows not only for the characterization, but also for the identification and detection of biomacromolecules in a very short time. In this review, efforts to utilize SERS for label-free protein detection and identification is summarized after a short introduction of proteins and the technique.
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Affiliation(s)
- Mustafa Culha
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Atasehir, Istanbul 34755 Turkey.
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10
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Ma X, Li L, Yang L, Su C, Wang K, Yuan S, Zhou J. Adsorption of heavy metal ions using hierarchical CaCO3-maltose meso/macroporous hybrid materials: adsorption isotherms and kinetic studies. JOURNAL OF HAZARDOUS MATERIALS 2012; 209-210:467-477. [PMID: 22326246 DOI: 10.1016/j.jhazmat.2012.01.054] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 01/13/2012] [Accepted: 01/16/2012] [Indexed: 05/31/2023]
Abstract
Highly ordered hierarchical calcium carbonate is an important phase and has technological interest in the development of functional materials. The work describes hierarchical CaCO(3)-maltose meso/macroporous hybrid materials were synthesized using a simple gas-diffusion method. The uniform hexagonal-shaped CaCO(3)-maltose hybrid materials are formed by the hierarchical assembly of nanoparticles. The pore structure analysis indicates that the sample possesses the macroporous structure of mesoporous framework. The distinguishing features of the hierarchical CaCO(3)-maltose materials in water treatment involve not only high removal capacities, but also decontamination of trace metal ions. Langmuir model fitted the equilibrium data better than the Freundlich isotherm. The maximum removal capacity of the CaCO(3)-maltose hybrid materials for Pb(2+), Cd(2+), Cu(2+), Co(2+), Mn(2+) and Ni(2+) ions was 3242.48, 487.80, 628.93, 393.70, 558.66 and 769.23 mg/g, respectively. Adsorption data were modeled using the pseudo-first-order, pseudo-second-order and intra-particle diffusion kinetics equations. The results indicate that pseudo-second-order kinetic equation and intra-particle diffusion model can better describe the adsorption kinetics. The adsorption and precipitation transformation mechanism can be considered due to hierarchical meso/macroporous structure, rich organic ligands of the CaCO(3)-maltose hybrid materials and the larger solubility product of CaCO(3).
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Affiliation(s)
- Xiaoming Ma
- College of Chemistry and Environmental Science, Henan Normal University, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Xinxiang 453007, PR China.
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11
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Wei K, ZeXiang S, Malini O. Generation of Ultralarge Surface Enhanced Raman Spectroscopy (SERS)-Active Hot-Spot Volumes by an Array of 2D Nano-Superlenses. Anal Chem 2011; 84:908-16. [DOI: 10.1021/ac201712k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- KhoKiang Wei
- School of Physics, National University of Ireland, Galway, Ireland
- National Cancer Centre of Singapore, Division of Medical Sciences, 11 Hospital Drive, 169610 Singapore
| | - Shen ZeXiang
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Olivo Malini
- School of Physics, National University of Ireland, Galway, Ireland
- National Cancer Centre of Singapore, Division of Medical Sciences, 11 Hospital Drive, 169610 Singapore
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12
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Zhang J, Qu S, Zhang L, Tang A, Wang Z. Quantitative surface enhanced Raman scattering detection based on the "sandwich" structure substrate. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 79:625-630. [PMID: 21531614 DOI: 10.1016/j.saa.2011.03.045] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Revised: 02/24/2011] [Accepted: 03/16/2011] [Indexed: 05/30/2023]
Abstract
A sandwich structured substrate was designed for quantitative molecular detection using surface enhanced Raman scattering (SERS), in which the probe molecule was sandwiched between silver nanoparticles (SNPs) and silver nanoarrays. The SNPs was prepared using Lee-Meisel method, and the silver nanoarrays was fabricated on porous anodic aluminum oxide (AAO) using electrodepositing method. The SERS studies show that the sandwich structured substrate exhibits good stability and reproducibility, and the detection sensitivity of Rhodamine 6G (R6G) and Melamine can respectively reach up to 10(-19) M and 10(-9) M, which is improved greatly as compared to other SERS substrates. The improved SERS sensitivity is closely associated with the stronger electromagnetic field enhancement, which stems from localized surface plasmon (LSP) coupling between the two silver nanostructures. Furthermore, the SERS intensity increased almost linearly as the mother concentration increased, which indicates that such a sandwich structure may be used as a good SERS substrate for quantitative analysis.
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Affiliation(s)
- Junmeng Zhang
- Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
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13
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Fletcher M, Alexson DM, Prokes S, Glembocki O, Vivoni A, Hosten C. Surface-enhanced Raman scattering of a Ag/oligo(phenyleneethynylene)/Ag sandwich. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 78:706-711. [PMID: 21190893 DOI: 10.1016/j.saa.2010.11.053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2010] [Revised: 11/01/2010] [Accepted: 11/30/2010] [Indexed: 05/30/2023]
Abstract
α,ω-Dithiols are a useful class of compounds in molecular electronics because of their ability to easily adsorb to two metal surfaces, producing a molecular junction. We have prepared Ag nanosphere/oligo(phenyleneethynylene)/Ag sol (AgNS/OPE/Ag sol) and Ag nanowire/oligo(phenyleneethynylene)/Ag sol (AgNW/OPE/Ag sol) sandwiches to simulate the architecture of a molecular electronic device. This was achieved by self-assembly of OPE on the silver nanosurface, deprotection of the terminal sulfur, and deposition of Ag sol atop the monolayer. These sandwiches were then characterized by surface-enhanced Raman scattering (SERS) spectroscopy. The resulting spectra were compared to the bulk spectrum of the dimer and to the Ag nanosurface/OPE SERS spectra. The intensities of the SERS spectra in both systems exhibit a strong dependence on Ag deposition time and the results are also suggestive of intense interparticle coupling of the electromagnetic fields in both the AgNW/OPE/Ag and the AgNS/OPE/Ag systems. Three previously unobserved bands (1219, 1234, 2037 cm(-1)) arose in the SER spectra of the sandwiches and their presence is attributed to the strong enhancement of the electromagnetic field which is predicted from the COSMOL computational package. The 544 cm(-1) disulfide bond which is observed in the spectrum of solid OPE but is absent in the AgNS/OPE/Ag and AgNW/OPE/Ag spectra is indicative of chemisorption of OPE to the nanoparticles through oxidative dissociation of the disulfide bond.
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Affiliation(s)
- Melissa Fletcher
- Department of Chemistry, Howard University, Washington, DC 20059, United States
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14
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Das SK, Das AR, Guha AK. Microbial synthesis of multishaped gold nanostructures. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:1012-21. [PMID: 20376859 DOI: 10.1002/smll.200902011] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The development of methodologies for the synthesis of nanoparticles of well-defined size and shape is a challenging one and constitutes an important area of research in nanotechnology. This Full Paper describes the controlled synthesis of multishaped gold nanoparticles at room temperature utilizing a simple, green chemical method by the interaction of chloroauric acid (HAuCl4 x 3H20) and cell-free extract of the fungal strain Rhizopus oryzae. The cell-free extract functions as a reducing, shape-directing, as well as stabilizing, agent. Different shapes of gold nanocrystals, for example, triangular, hexagonal, pentagonal, spherical, spheroidal, urchinlike, two-dimensional nanowires, and nanorods, are generated by manipulating key growth parameters, such as gold ion concentration, solution pH, and reaction time. The synthesized nanostructures are characterized by UV/Vis and Fourier-transform infrared spectroscopy, transmission electron microscopy, and energy dispersive X-ray analysis studies. Electron diffraction patterns reveal the crystalline nature of the nanoparticles and a probable mechanism is proposed for the formation of the different structural entities.
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Affiliation(s)
- Sujoy K Das
- Department of Biological Chemistry, Indian Association for the Cultivation of Science, Kolkata, India
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Alvarez-Puebla RA, Liz-Marzán LM. SERS-based diagnosis and biodetection. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2010; 6:604-10. [PMID: 20108237 DOI: 10.1002/smll.200901820] [Citation(s) in RCA: 275] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Surface-enhanced Raman scattering (SERS) spectroscopy is one of the most powerful analytical techniques for identification of molecular species, with the potential to reach single-molecule detection under ambient conditions. This Concept article presents a brief introduction and discussion of both recent advances and limitations of SERS in the context of diagnosis and biodetection, ranging from direct sensing to the use of encoded nanoparticles, in particular focusing on ultradetection of relevant bioanalytes, rapid diagnosis of diseases, marking of organelles within individual cells, and non-invasive tagging of anomalous tissues in living animals.
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Affiliation(s)
- Ramón A Alvarez-Puebla
- Departamento de Quimica-Fisica and Unidad Asociada CSIC-Universidade de Vigo 36310 Vigo, Spain.
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16
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Seyed-Razavi A, Snook IK, Barnard AS. Origin of nanomorphology: does a complete theory of nanoparticle evolution exist? ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b915383g] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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17
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Korbekandi H, Iravani S, Abbasi S. Production of nanoparticles using organisms. Crit Rev Biotechnol 2009; 29:279-306. [DOI: 10.3109/07388550903062462] [Citation(s) in RCA: 200] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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18
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Gupta S, Agrawal M, Uhlmann P, Simon F, Oertel U, Stamm M. Gold Nanoparticles Immobilized on Stimuli Responsive Polymer Brushes as Nanosensors. Macromolecules 2008. [DOI: 10.1021/ma801557u] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Smrati Gupta
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany
| | - Mukesh Agrawal
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany
| | - Petra Uhlmann
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany
| | - Frank Simon
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany
| | - Ulrich Oertel
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany
| | - Manfred Stamm
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany
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Yang L, Yang H, Yang Z, Cao Y, Ma X, Lu Z, Zheng Z. Observation of Rotated-Oriented Attachment during the Growth of Ag2S Nanorods under Mediation of Protein. J Phys Chem B 2008; 112:9795-801. [DOI: 10.1021/jp8017056] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lin Yang
- College of Chemistry and Environmental Science and Co-constructing Key Laboratory for Cell Differentiation Regulation, Henan Normal University, Xinxiang 453007, People’s Republic of China, College of Physics & Information Engineering, Henan Normal University, Xinxiang 453007, People’s Republic of China, College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People’s Republic of China, and Institute of Precision Engineering & Department of Physics, The Chinese University of
| | - Huayan Yang
- College of Chemistry and Environmental Science and Co-constructing Key Laboratory for Cell Differentiation Regulation, Henan Normal University, Xinxiang 453007, People’s Republic of China, College of Physics & Information Engineering, Henan Normal University, Xinxiang 453007, People’s Republic of China, College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People’s Republic of China, and Institute of Precision Engineering & Department of Physics, The Chinese University of
| | - Zongxian Yang
- College of Chemistry and Environmental Science and Co-constructing Key Laboratory for Cell Differentiation Regulation, Henan Normal University, Xinxiang 453007, People’s Republic of China, College of Physics & Information Engineering, Henan Normal University, Xinxiang 453007, People’s Republic of China, College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People’s Republic of China, and Institute of Precision Engineering & Department of Physics, The Chinese University of
| | - Yanxia Cao
- College of Chemistry and Environmental Science and Co-constructing Key Laboratory for Cell Differentiation Regulation, Henan Normal University, Xinxiang 453007, People’s Republic of China, College of Physics & Information Engineering, Henan Normal University, Xinxiang 453007, People’s Republic of China, College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People’s Republic of China, and Institute of Precision Engineering & Department of Physics, The Chinese University of
| | - Xiaoming Ma
- College of Chemistry and Environmental Science and Co-constructing Key Laboratory for Cell Differentiation Regulation, Henan Normal University, Xinxiang 453007, People’s Republic of China, College of Physics & Information Engineering, Henan Normal University, Xinxiang 453007, People’s Republic of China, College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People’s Republic of China, and Institute of Precision Engineering & Department of Physics, The Chinese University of
| | - Zhansheng Lu
- College of Chemistry and Environmental Science and Co-constructing Key Laboratory for Cell Differentiation Regulation, Henan Normal University, Xinxiang 453007, People’s Republic of China, College of Physics & Information Engineering, Henan Normal University, Xinxiang 453007, People’s Republic of China, College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People’s Republic of China, and Institute of Precision Engineering & Department of Physics, The Chinese University of
| | - Zhi Zheng
- College of Chemistry and Environmental Science and Co-constructing Key Laboratory for Cell Differentiation Regulation, Henan Normal University, Xinxiang 453007, People’s Republic of China, College of Physics & Information Engineering, Henan Normal University, Xinxiang 453007, People’s Republic of China, College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, People’s Republic of China, and Institute of Precision Engineering & Department of Physics, The Chinese University of
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Muniz-Miranda M, Pergolese B, Bigotto A, Giusti A. Stable and efficient silver substrates for SERS spectroscopy. J Colloid Interface Sci 2007; 314:540-4. [PMID: 17659296 DOI: 10.1016/j.jcis.2007.05.089] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2007] [Revised: 05/22/2007] [Accepted: 05/23/2007] [Indexed: 10/23/2022]
Abstract
Silver substrates have been obtained, by depositing silver colloidal nanoparticles on a roughened silver plate treated with 1,10-phenanthroline, and checked by means of AFM microscopy and Raman spectroscopy. The ligand molecules are located between two silver substrates and undergo the SERS (Surface Enhanced Raman Scattering) enhancement of both the roughened silver plate and the silver colloidal layer deposited on it. These SERS-active substrates, which show the advantages of being stable with respect to the metal colloidal suspensions, along with an easy and reproducible preparation, can be very useful for catalytic and analytical applications of the SERS spectroscopy.
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Driskell JD, Lipert RJ, Porter MD. Labeled gold nanoparticles immobilized at smooth metallic substrates: systematic investigation of surface plasmon resonance and surface-enhanced Raman scattering. J Phys Chem B 2007; 110:17444-51. [PMID: 16942083 DOI: 10.1021/jp0636930] [Citation(s) in RCA: 190] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This paper experimentally and theoretically investigates the influence of an underlying metallic substrate (i.e., gold and silver) on the surface plasmon resonance (SPR) of labeled gold nanoparticles and the concomitant impact on the surface-enhanced Raman scattering (SERS) signal from the labels. These experiments employ nanoparticles of varied sizes (30-100 nm) that are coated with a bifunctional Raman scatterer composed of (1) a disulfide for chemisorption to the nanoparticle surface, (2) a succinimidyl ester for formation of a covalent linkage to an amine-terminated self-assembled monolayer on the underlying substrate, and (3) an aryl nitro group with an intrinsically strong Raman active vibrational mode. This approach allows facile systematic assessments of how variations in nanoparticle size, substrate composition, and the gap between the nanoparticle and substrate affect the SPR of the bound particles. Both UV-vis transmission and reflection absorption (incident angle of 58 degrees ) spectroscopy are used to characterize the effect of each of these parameters on SPR. These results are then correlated with SERS enhancement factors (EFs) that were determined by accounting for particle surface concentrations, which were measured by atomic force microscopy, and the absolute number of labels, which were calculated on the basis of the surface area of each of the different-sized particles. All SERS spectra were collected at an incident angle of 58 degrees with respect to the surface normal. As expected, the SPR for particles in solution red-shifts with increasing particle size. More importantly, the SPR moves to even longer wavelengths as the size of immobilized particles increases and as the gap between the immobilized particle and substrate decreases. The red shift is also greater for a gold nanoparticle tethered to a gold substrate compared to a silver substrate. A theoretical model for the extinction of a particle above a flat substrate, corrected for surface scattering, radiation damping, and dynamic depolarization, is also briefly detailed. SPR results calculated with the model are consistent with the shifts observed in the SPR position for each of the manipulated experimental variables. The largest EFs are found for samples with an SPR maximum (lambda(max)) between the wavelengths for laser excitation (633 nm) and the Raman band for the symmetric nitro stretch of the particle coating (690 nm). As an example, an order of magnitude in the SERS enhancement factor is gained for a 60-nm particle immobilized 1.2 nm above a gold substrate (SPR lambda(max) = 657 nm) compared to that for a 30-nm particle (SPR lambda(max) = 596 nm).
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Affiliation(s)
- Jeremy D Driskell
- Institute for Combinatorial Discovery, Departments of Chemistry and of Chemical and Biological Engineering, Ames Laboratory-U.S. Department of Energy, Iowa State University, Ames, Iowa 50011-3020, USA
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23
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Pich AZ, Adler HJP. Composite aqueous microgels: an overview of recent advances in synthesis, characterization and application. POLYM INT 2007. [DOI: 10.1002/pi.2142] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Seballos L, Olson TY, Zhang JZ. Effects of chromophore orientation and molecule conformation on surface-enhanced Raman scattering studied with alkanoic acids and colloidal silver nanoparticles. J Chem Phys 2006; 125:234706. [PMID: 17190569 DOI: 10.1063/1.2404648] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Experimental studies have been carried out to gain a better understanding of the effects of chromophore orientation and molecular conformation on surface-enhanced Raman scattering (SERS) based on metal nanostructures. A series of alkanoic acids that contain a phenyl ring separated by methylene groups from the carboxylic acid, including phenylacetic acid, 3-phenylpropionic acid, 4-phenylbutyric acid, 5-phenylvaleric acid, and 6-phenylhexanoic acid, was investigated as model molecules with colloidal silver nanoparticles as SERS substrates. As the number of methylene groups increases, the molecules display an interesting zigzag intensity pattern of the phenyl ring bending mode around 1000 cm(-1) as well as a trend of appearance and disappearance of either the degenerate ring breathing mode or C[Double Bond]O vibrational mode near 1585 and 1630 cm(-1), respectively. Molecules containing an odd number of methylene units display a higher ring bending intensity and degenerate ring breathing mode and are suggested to have a trans conformation on the particle surface. Molecules with an even number of methylene units show a C[Double Bond]O vibrational mode and weaker ring bending in their SERS spectra and are suggested to have a gauche conformation on the silver nanoparticle surface. The different conformation is attributed to the varying interactions of the carboxylic group or the phenyl ring pi electrons with the silver surface. The SERS intensity was found to change little as the length between the phenyl ring and the carboxylic group was increased by adding CH(2) spacers. This is possibly because the effective distance between the phenyl ring and the silver surface does not change much with increasing number of CH(2) spacers as a result of changes in molecular conformation and variations in the phenyl ring orientation with CH(2) addition. The insight gained from this study is important for understanding SERS of complex molecules for which chromophore orientation and molecular conformation must be taken into careful consideration.
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Affiliation(s)
- Leo Seballos
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA
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Li H, Baum CE, Sun J, Cullum BM. Multilayer enhanced gold film over nanostructure surface-enhanced Raman substrates. APPLIED SPECTROSCOPY 2006; 60:1377-85. [PMID: 17217586 DOI: 10.1366/000370206779321562] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
We have developed a novel class of gold multilayer, surface-enhanced Raman scattering (SERS) substrates that are capable of enhancing SERS signals by 15.3-fold over conventional gold film over nanostructure (GFON) SERS substrates, making them comparable in sensitivity to optimized silver film over nanostructure (SFON) substrates, while providing the long-term stability obtained from gold. They are fabricated by depositing 10 A thick silver oxide islands on conventional GFON substrates, followed by deposition of a second continuous gold layer. The silver oxide layer acts as a dielectric spacer between the two continuous gold films and produces significantly enhanced SERS signals, as compared to optimized single layer substrates of the same geometry or comparable substrates prepared by deposition of silver islands that are not oxidized. In addition to the enhanced sensitivity of these multilayer substrates, they also exhibit long SERS active shelf-lives (i.e., months), with no measurable degradation in SERS enhancement, and relative standard deviations in SERS enhancement of less than 5.2% across the substrate's surface.
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Affiliation(s)
- Honggang Li
- Department of Chemistry and Biochemistry, University of Maryland Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250, USA
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Yang L, Xing R, Shen Q, Jiang K, Ye F, Wang J, Ren Q. Fabrication of Protein-Conjugated Silver Sulfide Nanorods in the Bovine Serum Albumin Solution. J Phys Chem B 2006; 110:10534-9. [PMID: 16722764 DOI: 10.1021/jp055603h] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Highly ordered silver sulfide nanorods conjugated with the Bovine Serum Albumin (BSA) protein have been successfully achieved at ambient temperature. Such a process is very simple and controllable, directly using silver nitrate and thioacetamide (TAA) as the reactants in the aqueous solution of BSA. The products have been characterized by XRD, HRTEM-SAED, SEM-EDS, TG-DTA, FT-IR, and CD spectroscopy. The results of the research show that the as-prepared Ag2S nanorods are monodispersed with sizes about 40 nm in diameter and 220 nm in length, and exhibit a high degree of crystallinity and good photoluminescence. Furthermore, an interesting mechanism is discussed for the formation of the Ag2S nanorods.
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Affiliation(s)
- Lin Yang
- College of Chemistry and Environmental Science, Henan Normal University, Xinxiang 453007, PR China.
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28
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Pich A, Bhattacharya S, Adler HJP, Wage T, Taubenberger A, Li Z, van Pee KH, Böhmer U, Bley T. Composite Magnetic Particles as Carriers for Laccase fromTrametes versicolor. Macromol Biosci 2006; 6:301-10. [PMID: 16572475 DOI: 10.1002/mabi.200500192] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In this paper we report a study of laccase immobilisation on different kinds of carrier particles. The immobilisation of enzyme on the particle surface with respect to the immobilisation efficiency and the properties of the immobilised enzymes is discussed. The immobilisation of laccase on polystyrene particles bearing reactive beta-diketone groups is characterised by high efficiency, but grafting of the enzyme increases the stability of the colloidal system, which makes the separation/purification procedure difficult. Additionally, the extreme colloidal stability of the immobilisates hinders the application of such particles with immobilised enzymes in some applications where the recycling of the enzyme should be performed. It has been found that hybrid PS-AAEM particles equipped with maghemite show similar immobilisation efficiency to that of their analogues without maghemite and can additionally be manipulated in magnetic fields. The activity of the immobilised laccase is much higher in the pH region 5-7 and the temperature range 50-70 degrees C as compared with that of the free enzyme. Immobilised enzymes also exhibit much better storage stability.
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Affiliation(s)
- Andrij Pich
- Institut für Makromolekulare Chemie und Textilchemie, Technische Universität Dresden, 01062 Dresden, Germany.
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29
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Malynych S, Chumanov G. Coupled planar silver nanoparticle arrays as refractive index sensors. ACTA ACUST UNITED AC 2006. [DOI: 10.1088/1464-4258/8/4/s14] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Wu DY, Ren B, Tian ZQ. Binding Interactions and Raman Spectral Properties of Pyridine Interacting with Bimetallic Silver-Gold Clusters. Chemphyschem 2006; 7:619-28. [PMID: 16514692 DOI: 10.1002/cphc.200500439] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The binding interactions between pyridine and bimetallic silver-gold clusters are investigated using density functional theory (DFT). The binding energies of pyridine-bimetallic cluster complexes indicate that the bonding depends strongly on the binding site (Au or Ag atom) and bonding molecular orbitals in a given configuration. The donation of the lone-pair electrons of the nitrogen of pyridine to an appropriate unoccupied orbital of each metal cluster plays an important role. The low-lying excited states and charge-transfer states of four stable complexes of interest are calculated on the basis of a time-dependent DFT method. In nonresonance Raman scattering processes, the influence of binding interactions on the relative Raman intensity of totally symmetric pyridine vibrational modes is discussed. These calculated relative Raman intensities are compared with observed surface-enhanced Raman spectra of pyridine adsorbed on silver-gold alloy surfaces.
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Affiliation(s)
- De-Yin Wu
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, China.
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Wang Y, Chen H, Dong S, Wang E. Surface enhanced Raman scattering of p-aminothiophenol self-assembled monolayers in sandwich structure fabricated on glass. J Chem Phys 2006; 124:74709. [PMID: 16497072 DOI: 10.1063/1.2172591] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A sandwich structure consisting of Ag nanoparticles (NPs), p-aminothiophenol (p-ATP) self-assembled monolayers (SAMs), and Ag NPs was fabricated on glass and characterized by surface enhanced Raman scattering (SERS). The SERS spectrum of a p-ATP SAM in such sandwich structure shows that the electromagnetic enhancement is greater than that on Ag NPs assembled on glass. The obtained enhancement factors (EF) on solely one sandwich structure were as large as 6.0 +/- 0.62 x 10(4) and 1.2 +/- 0.62 x 10(7) for the 7a and 3b(b(2)) vibration modes, respectively. The large enhancement effect of p-ATP SAMs is likely a result of plasmon coupling between the two layers of Ag NP (localized surface plasmon) resonance, creating a large localized electromagnetic field at their interface, where p-ATP resides. Moreover, the fact that large EF values (approximately 1.9 +/- 0.7 x 10(4) and 9.4 +/- 0.7 x 10(6) for the 7a- and b(2)-type vibration modes, respectively) were also obtained on a single sandwich structure of Au NPsp-ATP SAMsAg NPs in the visible demonstrates that the electromagnetic coupling does not exist only between Ag NPs but also between Au and Ag NPs. The lower EF values on Au-to-Ag NPs compared to those on Ag-to-Ag NPs demonstrate that the Au-to-Ag coupling must be less effective than the Ag-to-Ag coupling for the induction of SERS in the visible.
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Affiliation(s)
- Yuling Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Jilin, People's Republic of China
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Busby M, Scandola F. Photo-deposition and film formation of benzenethiol monolayer protected clusters in halogenated media. Chem Commun (Camb) 2006:4324-6. [PMID: 17047855 DOI: 10.1039/b605262b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2.1 nm benzenethiol monolayer protected gold clusters undergo solvent dependant photoinduced deposition with potential applications in the field of nanoparticle film formation.
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Affiliation(s)
- Michael Busby
- Dipartimento di Chimica, Università di Ferrara, and INSTM, Sezione di Ferrara, 44100, Ferrara, Italy
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De Jesús MA, Giesfeldt KS, Oran JM, Abu-Hatab NA, Lavrik NV, Sepaniak MJ. Nanofabrication of densely packed metal-polymer arrays for surface-enhanced Raman spectrometry. APPLIED SPECTROSCOPY 2005; 59:1501-8. [PMID: 16390590 DOI: 10.1366/000370205775142557] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A key element to improve the analytical capabilities of surface-enhanced Raman spectroscopy (SERS) resides in the performance characteristics of the SERS-active substrate. Variables such as shape, size, and homogeneous distribution of the metal nanoparticles throughout the substrate surface are important in the design of more analytically sensitive and reliable substrates. Electron-beam lithography (EBL) has emerged as a powerful tool for the systematic fabrication of substrates with periodic nanoscale features. EBL also allows the rational design of nanoscale features that are optimized to the frequency of the Raman laser source. In this work, the efficiency of EBL fabricated substrates are studied by measuring the relative SERS signals of Rhodamine 6G and 1,10-phenanthro-line adsorbed on a series of cubic, elliptical, and hexagonal nanopatterned pillars of ma-N 2403 directly coated by physical vapor deposition with 25 nm films of Ag or Au. The raw analyte SERS signals, and signals normalized to metal nanoparticle surface area or numbers of loci, are used to study the effects of nanoparticle morphology on the performance of a rapidly created, diverse collection of substrates. For the excitation wavelength used, the nanoparticle size, geometry, and orientation of the particle primary axis relative to the excitation polarization vector, and particularly the density of nanoparticles, are shown to strongly influence substrate performance. A correlation between the inverse of the magnitude of the laser backscatter passed by the spectrometer and SERS activities of the various substrate patterns is also noted and provides a simple means to evaluate possible efficient coupling of the excitation radiation to localized surface plasmons for Raman enhancement.
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Affiliation(s)
- M A De Jesús
- University of Puerto Rico-Mayagüez, Department of Chemistry, P. O. Box 9019, Mayagüez, P. R. 00681-9019
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Seballos L, Zhang JZ, Sutphen R. Surface-enhanced Raman scattering detection of lysophosphatidic acid. Anal Bioanal Chem 2005; 383:763-7. [PMID: 16261318 PMCID: PMC3303217 DOI: 10.1007/s00216-005-0097-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2005] [Revised: 08/28/2005] [Accepted: 08/31/2005] [Indexed: 10/25/2022]
Abstract
Surface-enhanced Raman scattering using silver nanoparticles was applied to detect various forms of lysophosphatidic acid (LPA) to examine its potential application as an alternative to current detection methods of LPA as biomarkers of ovarian cancer. Enhancement of the Raman modes of the molecule, especially those related to the acyl chain within the 800-1300 cm(-1) region, was observed. In particular, the C-C vibration mode of the gauche-bonded chain around 1100 cm(-1) was enhanced to allow the discrimination of two similar LPA molecules. Given the molecular selectivity of this technique, the detection of LPA using SERS may eliminate the need for partial purification of samples prior to analysis in cancer screening.
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Affiliation(s)
- Leo Seballos
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA
| | - Jin Z. Zhang
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA 95064, USA, Tel.: +1-831-4593776, Fax: +1-831-4592935
| | - Rebecca Sutphen
- Department of Interdisciplinary Oncology, College of Medicine and H. Lee Moffitt Cancer Center and Research Institute, University of South Florida, Tampa, FL 33612, USA
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Katz E, Willner I. Integrated nanoparticle-biomolecule hybrid systems: synthesis, properties, and applications. Angew Chem Int Ed Engl 2005; 43:6042-108. [PMID: 15538757 DOI: 10.1002/anie.200400651] [Citation(s) in RCA: 1630] [Impact Index Per Article: 85.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Nanomaterials, such as metal or semiconductor nanoparticles and nanorods, exhibit similar dimensions to those of biomolecules, such as proteins (enzymes, antigens, antibodies) or DNA. The integration of nanoparticles, which exhibit unique electronic, photonic, and catalytic properties, with biomaterials, which display unique recognition, catalytic, and inhibition properties, yields novel hybrid nanobiomaterials of synergetic properties and functions. This review describes recent advances in the synthesis of biomolecule-nanoparticle/nanorod hybrid systems and the application of such assemblies in the generation of 2D and 3D ordered structures in solutions and on surfaces. Particular emphasis is directed to the use of biomolecule-nanoparticle (metallic or semiconductive) assemblies for bioanalytical applications and for the fabrication of bioelectronic devices.
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Affiliation(s)
- Eugenii Katz
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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Laucks ML, Sengupta A, Junge K, Davis EJ, Swanson BD. Comparison of psychro-active arctic marine bacteria and common mesophillic bacteria using surface-enhanced Raman spectroscopy. APPLIED SPECTROSCOPY 2005; 59:1222-8. [PMID: 16274534 DOI: 10.1366/000370205774430891] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Psychro-active bacteria, important constituents of polar ecosystems, have a unique ability to remain active at temperatures below 0 degrees C, yet it is not known to what extent the composition of their outer cell surfaces aids in their low-temperature viability. In this study, aqueous suspensions of five strains of Arctic psychro-active marine bacteria (PAMB) (mostly sea-ice isolates), were characterized by surface-enhanced Raman spectroscopy (SERS) and compared with SERS spectra from E. coli and P. aerigunosa. We find the SERS spectra of the five psychro-active bacterial strains are similar within experimental reproducibility. However, these spectra are significantly different from the spectra of P. aeruginosa and E. coli. We find that the relative intensities of many of the common peaks show the largest differences reported so far for bacterial samples. An indication of a peak was found in the PAMB spectra that has been identified as characteristic of unsaturated fatty acids and suggests that the outer membranes of the PAMB may contain unsaturated fatty acids. We find that using suspensions of silver colloid particles greatly intensifies the Raman peaks and quenches the fluorescence from bacterial samples. This technique is useful for examination of specific biochemical differences among bacteria.
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Affiliation(s)
- Mary L Laucks
- Department of Chemical Engineering, Box 351750, University of Washington, Seattle, Washington 98195-1750, USA
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Stuart DA, Haes AJ, Yonzon CR, Hicks EM, Van Duyne RP. Biological applications of localised surface plasmonic phenomenae. ACTA ACUST UNITED AC 2005; 152:13-32. [PMID: 16441155 DOI: 10.1049/ip-nbt:20045012] [Citation(s) in RCA: 217] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Researchers and industrialists have taken advantage of the unusual optical, magnetic, electronic, catalytic, and mechanical properties of nanomaterials. Nanoparticles and nanoscale materials have proven to be useful for biological uses. Nanoscale materials hold a particular interest to those in the biological sciences because they are on the same size scale as biological macromolecules, proteins and nucleic acids. The interactions between biomolecules and nanomaterials have formed the basis for a number of applications including detection, biosensing, cellular and in situ hybridisation labelling, cell tagging and sorting, point-of-care diagnostics, kinetic and binding studies, imaging enhancers, and even as potential therapeutic agents. Noble metal nanoparticles are especially interesting because of their unusual optical properties which arise from their ability to support surface plasmons. In this review the authors focus on biological applications and technologies that utilise two types of related plasmonic phenomonae: localised surface plasmon resonance (LSPR) spectroscopy and surface-enhanced Raman spectroscopy (SERS). The background necessary to understand the application of LSPR and SERS to biological problems is presented and illustrative examples of resonant Rayleigh scattering, refractive index sensing, and SERS-based detection and labelling are discussed.
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Affiliation(s)
- D A Stuart
- Department of Chemistry, Northwestern University, Evanston, IL 60208-3113, USA
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Katz E, Willner I. Integrierte Hybridsysteme aus Nanopartikeln und Biomolekülen: Synthese, Eigenschaften und Anwendungen. Angew Chem Int Ed Engl 2004. [DOI: 10.1002/ange.200400651] [Citation(s) in RCA: 256] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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39
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Gan X, Liu T, Zhong J, Liu X, Li G. Effect of Silver Nanoparticles on the Electron Transfer Reactivity and the Catalytic Activity of Myoglobin. Chembiochem 2004; 5:1686-91. [PMID: 15526329 DOI: 10.1002/cbic.200400080] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Silver nanoparticles (11+/-1.5 nm) could greatly enhance the electron-transfer reactivity of myoglobin (Mb) and its catalytic ability toward hydrogen peroxide (H2O2). Direct fast electron transfer between Mb and a pyrolytic graphite (PG) electrode was achieved, and a pair of well-defined, quasi-reversible redox peaks was obtained. The cathodic and anodic peaks were located at -329 and -281 mV, respectively. Meanwhile, the catalytic ability of the protein toward the reduction of H2O2 was also studied, and a H2O2 biosensor was subsequently fabricated. Its detection limit was 1.0 x 10(-6) M with a sensitivity of 0.0205 microA per microM of H2O2. The apparent Michaelis-Menten constant was calculated to be 1303 muM. Flocculation assay showed that the protein maintained plasmon layers surrounding the surface of silver nanoparticles and avoided silver-nanoparticle aggregation. On the other hand, UV-visible spectroscopy studies revealed that silver nanoparticles could induce a small change of the heme-group environment of the protein; this contributed to the enhancement of the electron-transfer reactivity and the catalytic activity.
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Affiliation(s)
- Xin Gan
- Department of Biochemistry and National Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, PR China
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Wallace JM, Dening BM, Eden KB, Stroud RM, Long JW, Rolison DR. Silver-colloid-nucleated cytochrome c superstructures encapsulated in silica nanoarchitectures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:9276-9281. [PMID: 15461518 DOI: 10.1021/la048478u] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We recently discovered that self-organized superstructures of the heme protein cytochrome c (cyt. c) are nucleated in buffer by gold nanoparticles. The protein molecules within the superstructure survive both silica sol-gel encapsulation and drying from supercritical carbon dioxide to form air-filled biocomposite aerogels that exhibit gas-phase binding activity for nitric oxide. In this investigation, we report that viable proteins are present in biocomposite aerogels when the nucleating metal nanoparticle is silver rather than gold. Silver colloids were synthesized via reduction of an aqueous solution of Ag+ using either citrate or borohydride reductants. As determined by transmission electron microscopy and UV-visible absorption spectroscopy, the silver nanoparticles vary in size and shape depending on the synthetic route, which affects the fraction of cyt. c that survives the processing necessary to form a biocomposite aerogel. Silver colloids synthesized via the citrate preparation are polydisperse, with sizes ranging from 1 to 100 nm, and lead to low cyt. c viability in the dried bioaerogels (approximately 15%). Protein superstructures nucleated at approximately 10-nm Ag colloids prepared via the borohydride route, including citrate stabilization of the borohydride-reduced metal, retain significant protein viability within the bioaerogels (approximately 45%).
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Affiliation(s)
- Jean Marie Wallace
- Surface Chemistry Branch (Code 6170) and Sensors and Materials Branch (Code 6360), Naval Research Laboratory, Washington, D.C. 20375, USA
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Meziani MJ, Sun YP. Protein-conjugated nanoparticles from rapid expansion of supercritical fluid solution into aqueous solution. J Am Chem Soc 2003; 125:8015-8. [PMID: 12823024 DOI: 10.1021/ja030104k] [Citation(s) in RCA: 109] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The method of rapid expansion of a supercritical solution into a liquid solvent (RESOLV) was applied to the preparation of bovine serum albumin protein-conjugated silver sulfide nanoparticles. The conjugate samples were characterized by using a series of instrumental techniques. The results show that the monodispersed nanoparticles in the conjugates are well-coated directly with the protein. Because the protein undergoes solution pH-dependent association and dissociation, the protein-nanoparticle conjugates also assemble and disassemble with changes in solution pH in a reversible fashion.
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Affiliation(s)
- Mohammed J Meziani
- Department of Chemistry and Center for Advanced Engineering Fibers and Films, Howard L. Hunter Chemistry Laboratory, Clemson University, Clemson, SC 29634-0973, USA
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Ahmad A, Mukherjee P, Senapati S, Mandal D, Khan M, Kumar R, Sastry M. Extracellular biosynthesis of silver nanoparticles using the fungus Fusarium oxysporum. Colloids Surf B Biointerfaces 2003. [DOI: 10.1016/s0927-7765(02)00174-1] [Citation(s) in RCA: 787] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Abstract
Noble metal particles have long fascinated scientists because of their intense color, which led to their application in stained glass windows as early as the Middle Ages. The recent resurrection of colloidal and cluster chemistry has brought about the strive for new materials that allow a bottoms-up approach of building improved and new devices with nanoparticles or artificial atoms. In this review, we discuss some of the properties of individual and some assembled metallic nanoparticles with a focus on their interaction with cw and pulsed laser light of different energies. The potential application of the plasmon resonance as sensors is discussed.
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Affiliation(s)
- Stephan Link
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Atlanta, GA 30332-0400, USA
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Tian ZQ, Ren B, Wu DY. Surface-Enhanced Raman Scattering: From Noble to Transition Metals and from Rough Surfaces to Ordered Nanostructures. J Phys Chem B 2002. [DOI: 10.1021/jp0257449] [Citation(s) in RCA: 1107] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Zhong-Qun Tian
- State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, Xiamen University, Xiamen 361005, China
| | - Bin Ren
- State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, Xiamen University, Xiamen 361005, China
| | - De-Yin Wu
- State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, Xiamen University, Xiamen 361005, China
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Kamat PV. Photophysical, Photochemical and Photocatalytic Aspects of Metal Nanoparticles. J Phys Chem B 2002. [DOI: 10.1021/jp0209289] [Citation(s) in RCA: 1670] [Impact Index Per Article: 75.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Studies on the formation of bioconjugates of Endoglucanase with colloidal gold. Colloids Surf B Biointerfaces 2002. [DOI: 10.1016/s0927-7765(01)00301-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Niemeyer CM. Nanoparticles, Proteins, and Nucleic Acids: Biotechnology Meets Materials Science. Angew Chem Int Ed Engl 2001; 40:4128-4158. [DOI: 10.1002/1521-3773(20011119)40:22<4128::aid-anie4128>3.0.co;2-s] [Citation(s) in RCA: 2006] [Impact Index Per Article: 87.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2001] [Indexed: 01/04/2023]
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