1
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Piantanida L, Liddle JA, Hughes WL, Majikes JM. DNA nanostructure decoration: a how-to tutorial. NANOTECHNOLOGY 2024; 35:273001. [PMID: 38373400 DOI: 10.1088/1361-6528/ad2ac5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 02/18/2024] [Indexed: 02/21/2024]
Abstract
DNA Nanotechnology is being applied to multiple research fields. The functionality of DNA nanostructures is significantly enhanced by decorating them with nanoscale moieties including: proteins, metallic nanoparticles, quantum dots, and chromophores. Decoration is a complex process and developing protocols for reliable attachment routinely requires extensive trial and error. Additionally, the granular nature of scientific communication makes it difficult to discern general principles in DNA nanostructure decoration. This tutorial is a guidebook designed to minimize experimental bottlenecks and avoid dead-ends for those wishing to decorate DNA nanostructures. We supplement the reference material on available technical tools and procedures with a conceptual framework required to make efficient and effective decisions in the lab. Together these resources should aid both the novice and the expert to develop and execute a rapid, reliable decoration protocols.
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Affiliation(s)
- Luca Piantanida
- Faculty of Applied Science, School of Engineering, University of British Columbia, Kelowna, B.C., V1V 1V7, Canada
| | - J Alexander Liddle
- National Institute of Standards and Technology, Gaithersburg, MD, 20878, United States of America
| | - William L Hughes
- Faculty of Applied Science, School of Engineering, University of British Columbia, Kelowna, B.C., V1V 1V7, Canada
| | - Jacob M Majikes
- National Institute of Standards and Technology, Gaithersburg, MD, 20878, United States of America
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2
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Truc Phuong NT, Dang VQ, Van Hieu L, Bach TN, Khuyen BX, Thi Ta HK, Ju H, Phan BT, Thi Tran NH. Functionalized silver nanoparticles for SERS amplification with enhanced reproducibility and for ultrasensitive optical fiber sensing in environmental and biochemical assays. RSC Adv 2022; 12:31352-31362. [PMID: 36348993 PMCID: PMC9624182 DOI: 10.1039/d2ra06074d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 10/19/2022] [Indexed: 11/28/2022] Open
Abstract
Plasmonic sensors have broad application potential in many fields and are promising to replace most bulky sensors in the future. There are various method-based chemical reduction processes for silver nanoparticle production with flexible structural shapes due to their simplicity and rapidity in nanoparticle fabrication. In this study, self-assembled silver nanoparticles (Ag NPs) with a plasmon peak at 424 nm were successfully coated onto -NH2-functionalized glass and optical fiber sensors. These coatings were rapidly produced via two denaturation reactions in plasma oxygen, respectively, and an APTES ((3-aminopropyl)triethoxysilane) solution was shown to have high strength and uniformity. With the use of Ag NPs for surface-enhanced Raman scattering (SERS), excellent results and good stability with the detection limit up to 10-10 M for rhodamine B and 10-8 M for methylene blue, and a signal degradation of only ∼20% after storing for 30 days were achieved. In addition, the optical fiber sensor with Ag NP coatings exhibited a higher sensitivity value of 250 times than without coatings to the glycerol solution. Therefore, significant enhancement of these ultrasensitive sensors demonstrates promising alternatives to cumbersome tests of dye chemicals and biomolecules without any complicated process.
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Affiliation(s)
- Nguyen Tran Truc Phuong
- Faculty of Materials Science and Technology, University of Science Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Vietnam
| | - Vinh Quang Dang
- Faculty of Materials Science and Technology, University of Science Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Vietnam
| | - Le Van Hieu
- Faculty of Materials Science and Technology, University of Science Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Vietnam
| | - Ta Ngoc Bach
- Institute of Materials Science, Vietnam Academy of Science and Technology Hanoi Vietnam
| | - Bui Xuan Khuyen
- Institute of Materials Science, Vietnam Academy of Science and Technology Hanoi Vietnam
| | - Hanh Kieu Thi Ta
- Faculty of Materials Science and Technology, University of Science Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Vietnam
| | - Heongkyu Ju
- Department of Physics, Gachon University Seongnam Gyeonggi-do 13120 Republic of Korea
| | - Bach Thang Phan
- Vietnam National University Ho Chi Minh City Vietnam
- Center for Innovative Materials and Architectures (INOMAR) HoChiMinh City Viet Nam
| | - Nhu Hoa Thi Tran
- Faculty of Materials Science and Technology, University of Science Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Vietnam
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3
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Oliveira MJ, P de Almeida M, Nunes D, Fortunato E, Martins R, Pereira E, J Byrne H, Águas H, Franco R. Design and Simple Assembly of Gold Nanostar Bioconjugates for Surface-Enhanced Raman Spectroscopy Immunoassays. NANOMATERIALS 2019; 9:nano9111561. [PMID: 31689919 PMCID: PMC6915668 DOI: 10.3390/nano9111561] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 10/24/2019] [Accepted: 10/30/2019] [Indexed: 01/15/2023]
Abstract
Immunoassays using Surface-Enhanced Raman Spectroscopy are especially interesting on account not only of their increased sensitivity, but also due to its easy translation to point-of-care formats. The bases for these assays are bioconjugates of polyclonal antibodies and anisotropic gold nanoparticles functionalized with a Raman reporter. These bioconjugates, once loaded with the antigen analyte, can react on a sandwich format with the same antibodies immobilized on a surface. This surface can then be used for detection, on a microfluidics or immunochromatographic platform. Here, we have assembled bioconjugates of gold nanostars functionalized with 4-mercaptobenzoic acid, and anti-horseradish peroxidase antibodies. The assembly was by simple incubation, and agarose gel electrophoresis determined a high gold nanostar to antibody binding constant. The functionality of the bioconjugates is easy to determine since the respective antigen presents peroxidase enzymatic activity. Furthermore, the chosen antibody is a generic immunoglobulin G (IgG) antibody, opening the application of these principles to other antibody-antigen systems. Surface-Enhanced Raman Spectroscopy analysis of these bioconjugates indicated antigen detection down to 50 µU of peroxidase activity. All steps of conjugation were fully characterized by ultraviolet-visible spectroscopy, dynamic light scattering, ζ -Potential, scanning electron microscopy, and agarose gel electrophoresis. Based on the latter technique, a proof-of-concept was established for the proposed immunoassay.
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Affiliation(s)
- Maria João Oliveira
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal.
- CENIMAT-I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Miguel P de Almeida
- REQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal.
| | - Daniela Nunes
- CENIMAT-I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Elvira Fortunato
- CENIMAT-I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Rodrigo Martins
- CENIMAT-I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Eulália Pereira
- REQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal.
| | - Hugh J Byrne
- FOCAS Research Institute, Technological University Dublin, Kevin Street, Dublin 8, Ireland.
| | - Hugo Águas
- CENIMAT-I3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Ricardo Franco
- UCIBIO, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal.
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4
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Masciotti V, Piantanida L, Naumenko D, Amenitsch H, Fanetti M, Valant M, Lei D, Ren G, Lazzarino M. A DNA origami plasmonic sensor with environment-independent read-out. NANO RESEARCH 2019; 12:2900-2907. [PMID: 37799163 PMCID: PMC10552622 DOI: 10.1007/s12274-019-2535-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 09/24/2019] [Accepted: 10/06/2019] [Indexed: 10/07/2023]
Abstract
DNA origami is a promising technology for its reproducibility, flexibility, scalability and biocompatibility. Among the several potential applications, DNA origami has been proposed as a tool for drug delivery and as a contrast agent, since a conformational change upon specific target interaction may be used to release a drug or produce a physical signal, respectively. However, its conformation should be robust with respect to the properties of the medium in which either the recognition or the read-out take place, such as pressure, viscosity and any other unspecific interaction other than the desired target recognition. Here we report on the read-out robustness of a tetragonal DNA-origami/gold-nanoparticle hybrid structure able to change its configuration, which is transduced in a change of its plasmonic properties, upon interaction with a specific DNA target. We investigated its response when analyzed in three different media: aqueous solution, solid support and viscous gel. We show that, once a conformational variation is produced, it remains unaffected by the subsequent physical interactions with the environment.
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Affiliation(s)
- Valentina Masciotti
- CNR-IOM, AREA Science Park, Basovizza Trieste I-34149, Italy
- PhD Course in Nanotechnology, University of Trieste, Trieste I-34127, Italy
| | - Luca Piantanida
- CNR-IOM, AREA Science Park, Basovizza Trieste I-34149, Italy
| | - Denys Naumenko
- CNR-IOM, AREA Science Park, Basovizza Trieste I-34149, Italy
- Institute for Physics of Semiconductors, National Academy of Sciences of Ukraine, Kyiv 03028, Ukraine
| | - Heinz Amenitsch
- Institute of Inorganic Chemistry, Graz University of Technology, Graz A-8010, Austria
| | - Mattia Fanetti
- Materials Research Laboratory, University of Nova Gorica, Nova Gorica SI-5000, Slovenia
| | - Matjaž Valant
- Materials Research Laboratory, University of Nova Gorica, Nova Gorica SI-5000, Slovenia
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Dongsheng Lei
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley CA 94720, USA
- School of Physical Science and Technology, Electron Microscopy Center of LZU, Lanzhou University, Lanzhou 730000, China
| | - Gang Ren
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley CA 94720, USA
| | - Marco Lazzarino
- CNR-IOM, AREA Science Park, Basovizza Trieste I-34149, Italy
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5
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Peixoto de Almeida M, Quaresma P, Sousa S, Couto C, Gomes I, Krippahl L, Franco R, Pereira E. Measurement of adsorption constants of laccase on gold nanoparticles to evaluate the enhancement in enzyme activity of adsorbed laccase. Phys Chem Chem Phys 2018; 20:16761-16769. [PMID: 29882945 DOI: 10.1039/c8cp03116a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Adsorption of enzymes to nanoparticles and the mechanisms responsible for enzyme activity modulation of adsorbed enzymes are not well understood. In this work, gold nanoparticles were used for electrostatic adsorption of a plant-derived laccase. Adsorption constants were determined by four independent techniques: dynamic light scattering, electrophoretic light scattering, agarose gel electrophoresis and fluorescence quenching. Stable bionanoconjugates were formed with log K in the range 6.8-8.9. An increase in enzyme activity was detected, in particular at acidic and close to neutral pH values, a feature that expands the useful pH range of the enzyme. A model for the adsorption was developed, based on geometrical considerations and volume increase data from dynamic light scattering. This indicates that enzymes adsorbed to gold nanoparticles are ca. 9 times more active than the free enzyme.
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Affiliation(s)
- Miguel Peixoto de Almeida
- LAQV, REQUIMTE, Departamento de Química e Bioquímica, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal.
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6
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Masciotti V, Naumenko D, Lazzarino M, Piantanida L. Tuning Gold Nanoparticles Plasmonic Properties by DNA Nanotechnology. Methods Mol Biol 2018; 1811:279-297. [PMID: 29926460 DOI: 10.1007/978-1-4939-8582-1_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The engineering of the optical and plasmonic properties of metallic nanostructure is one of the key ingredients for the complete control of materials at the nanoscale. Here we show how it is possible to control the plasmonic resonance of complex architectures of gold nanoparticles using the peculiar properties of DNA Watson and Crick pairing rules. In this chapter, we will first introduce all the steps required to generate, purify, and characterize DNA nanostructures, then we will guide the reader to the main steps required to decorate them with a precise amount of gold nanoparticles and, finally, we will describe the main approach used to characterize their plasmonic response.
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Affiliation(s)
- Valentina Masciotti
- Università Degli Studi di Trieste, Trieste, Italy.,IOM-CNR Laboratorio TASC, Trieste, Italy
| | | | | | - Luca Piantanida
- IOM-CNR Laboratorio TASC, Trieste, Italy. .,Department of Physics, Durham University, Durham, UK.
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7
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Li W. Physics Models of Plasmonics: Single Nanoparticle, Complex Single Nanoparticle, Nanodimer, and Single Nanoparticle over Metallic Thin Film. PLASMONICS (NORWELL, MASS.) 2017; 13:997-1014. [PMID: 29780289 PMCID: PMC5948253 DOI: 10.1007/s11468-017-0598-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 05/09/2017] [Indexed: 05/25/2023]
Abstract
The physics models of plasmonics for single nanoparticle, complex single nanoparticle, nanodimer, and single nanoparticle over a metallic thin film with an isolation layer, have been reviewed in this article. In nanoscale, the localized plasmonics from the single nanoparticle, hybrid single nanoparticle, and nanodimer, can be illustrated by classical electrodynamics. When the space of a nanodimer downs to subnanometer, the classical electrodynamics would fail to predict the resonance spectrum or dispersion of the nanostructures. The quantum model and quantum-corrected electrodynamics model, are introduced to deal with this problem. For the single nanoparticle over a metallic thin film with an isolation layer, the plasmonic resonance and the enhanced local field depend on the thickness of the isolation layer strongly. When the isolation layer thickness goes down to subnanometer, the classical electromagnetics model would be replaced by the quantum model for illustrating of the plasmonics. The physics models of plasmonics have wide applications in design and fabrication of the metallic nanostructure for further research.
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Affiliation(s)
- Wenbing Li
- Institute for Frontier Materials, Deakin University, Locked Bag 20000, Geelong, VIC 3220 Australia
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8
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Skeete Z, Cheng HW, Ngo QM, Salazar C, Sun W, Luo J, Zhong CJ. 'Squeezed' interparticle properties for plasmonic coupling and SERS characteristics of duplex DNA conjugated/linked gold nanoparticles of homo/hetero-sizes. NANOTECHNOLOGY 2016; 27:325706. [PMID: 27352636 DOI: 10.1088/0957-4484/27/32/325706] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The formation of interparticle duplex DNA conjugates with gold nanoparticles constitutes the basis for interparticle plasmonic coupling responsible for surface-enhanced Raman scattering signal amplification, but understanding of its correlation with interparticle spatial properties and particle sizes, especially in aqueous solutions, remains elusive. This report describes findings of an investigation of interparticle plasmonic coupling based on experimental measurements of localized surface plasmon resonance and surface enhanced Raman scattering characteristics for gold nanoparticles in aqueous solutions upon introduction of interparticle duplex DNA conjugates to define the interparticle spatial properties. Theoretical simulations of the interparticle optical properties and electric field enhancement based on a dimer model have also been performed to aid the understanding of the experimental results. The results have revealed a 'squeezed' interparticle spatial characteristic in which the duplex DNA-defined distance is close or shorter than A-form DNA conformation, which are discussed in terms of the interparticle interactions, providing fresh insight into the interparticle double-stranded DNA-defined interparticle spatial properties for the design of highly-sensitive nanoprobes in solutions for biomolecular detection.
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Affiliation(s)
- Zakiya Skeete
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY 13902, USA
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9
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Salmon AR, Esteban R, Taylor RW, Hugall JT, Smith CA, Whyte G, Scherman OA, Aizpurua J, Abell C, Baumberg JJ. Monitoring Early-Stage Nanoparticle Assembly in Microdroplets by Optical Spectroscopy and SERS. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:1788-96. [PMID: 26865562 DOI: 10.1002/smll.201503513] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 01/11/2016] [Indexed: 05/19/2023]
Abstract
Microfluidic microdroplets have increasingly found application in biomolecular sensing as well as nanomaterials growth. More recently the synthesis of plasmonic nanostructures in microdroplets has led to surface-enhanced Raman spectroscopy (SERS)-based sensing applications. However, the study of nanoassembly in microdroplets has previously been hindered by the lack of on-chip characterization tools, particularly at early timescales. Enabled by a refractive index matching microdroplet formulation, dark-field spectroscopy is exploited to directly track the formation of nanometer-spaced gold nanoparticle assemblies in microdroplets. Measurements in flow provide millisecond time resolution through the assembly process, allowing identification of a regime where dimer formation dominates the dark-field scattering and SERS. Furthermore, it is shown that small numbers of nanoparticles can be isolated in microdroplets, paving the way for simple high-yield assembly, isolation, and sorting of few nanoparticle structures.
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Affiliation(s)
- Andrew R Salmon
- Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge, CB2 1EW, UK
- Department of Physics, University of Cambridge, Cavendish Laboratory, JJ Thompson Avenue, Cambridge, CB3 0HE, UK
| | - Ruben Esteban
- Materials Physics Center (CSIC-UPV/EHU) and DIPC, Paseo Manuel de Lardizabal 4, Donostia-San Sebastian, ES, 20018, Spain
| | - Richard W Taylor
- Department of Physics, University of Cambridge, Cavendish Laboratory, JJ Thompson Avenue, Cambridge, CB3 0HE, UK
| | - James T Hugall
- Department of Physics, University of Cambridge, Cavendish Laboratory, JJ Thompson Avenue, Cambridge, CB3 0HE, UK
- ICFO, The Barcelona Institute of Science and Technology, Barcelona, 08860, Spain
| | - Clive A Smith
- Sphere Fluidics Limited, Babraham Research Campus, Cambridge, CB22 3AT, UK
| | - Graeme Whyte
- Heriot-Watt University, School of Engineering and Physical Sciences, David Brewster Building, Edinburgh, EH14 4AS, UK
| | - Oren A Scherman
- Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge, CB2 1EW, UK
| | - Javier Aizpurua
- Materials Physics Center (CSIC-UPV/EHU) and DIPC, Paseo Manuel de Lardizabal 4, Donostia-San Sebastian, ES, 20018, Spain
| | - Chris Abell
- Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge, CB2 1EW, UK
| | - Jeremy J Baumberg
- Department of Physics, University of Cambridge, Cavendish Laboratory, JJ Thompson Avenue, Cambridge, CB3 0HE, UK
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10
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Kim S, Wark AW, Lee HJ. Gel electrophoretic analysis of differently shaped interacting and non-interacting bioconjugated nanoparticles. RSC Adv 2016. [DOI: 10.1039/c6ra23948j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Gel electrophoresis is demonstrated for monitoring bioaffinity interactions between protein-functionalized nanoparticles featuring different shapes as well as for particle separation.
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Affiliation(s)
- Suhee Kim
- Department of Chemistry and Green-Nano Materials Research Center
- Kyungpook National University
- Daegu-city
- Republic of Korea
| | - Alastair W. Wark
- Centre for Molecular Nanometrology
- WestCHEM
- Department of Pure and Applied Chemistry
- Technology and Innovation Centre
- University of Strathclyde
| | - Hye Jin Lee
- Department of Chemistry and Green-Nano Materials Research Center
- Kyungpook National University
- Daegu-city
- Republic of Korea
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11
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Piantanida L, Naumenko D, Torelli E, Marini M, Bauer DM, Fruk L, Firrao G, Lazzarino M. Plasmon resonance tuning using DNA origami actuation. Chem Commun (Camb) 2015; 51:4789-92. [PMID: 25692733 DOI: 10.1039/c5cc00778j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A strategy for an innovative, continuous and reversible LSPR tuning using DNA origami actuation to modulate the nanometric separation of two gold nanoparticles has been developed. The actuation mechanism is based on DNA hybridization, in particular three different DNA sequences were shown to induce resonance shift of up to 6 nm.
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Affiliation(s)
- Luca Piantanida
- CNR-IOM Laboratorio TASC, Area Science Park, Basovizza, 34149, Trieste, Italy.
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12
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Cheng YF, Yu GP, Yan Y, Liu JY, Ye C, Yu X, Lai XD, Hu JQ. A simple and effective strategy for the directed and high-yield assembly of large-sized gold nanoparticles driven by bithiol-modified complementary dsDNA architectures. RSC Adv 2014. [DOI: 10.1039/c4ra04617j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A simple strategy for the high-yield assembly of large-sized Au NPs has been demonstrated by bithiol-modified complementary dsDNA architectures, which obviate the traditional conjugate of Au NPs to long ssDNA.
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Affiliation(s)
- Yan-Fang Cheng
- Key Lab of Fuel Cell Technology of Guangdong Province
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640, China
| | - Gui-Ping Yu
- Key Lab of Fuel Cell Technology of Guangdong Province
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640, China
| | - Yuan Yan
- Key Lab of Fuel Cell Technology of Guangdong Province
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640, China
| | - Jian-Yu Liu
- Key Lab of Fuel Cell Technology of Guangdong Province
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640, China
| | - Cui Ye
- Key Lab of Fuel Cell Technology of Guangdong Province
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640, China
| | - Xiang Yu
- Analytical and Testing Center
- Jinan University
- Guangzhou 510632, China
| | - Xuan-Di Lai
- Key Lab of Fuel Cell Technology of Guangdong Province
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640, China
| | - Jian-Qiang Hu
- Key Lab of Fuel Cell Technology of Guangdong Province
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640, China
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