Silver Nanoplate Contrast Agents for <i>in Vivo</i> Molecular Photoacoustic Imaging

Homan, Kimberly A.; Souza, Michael; Truby, Ryan L.; Luke, Geoffrey P.; Green, Christopher; Vreeland, Erika C.; Emelianov, Stanislav

doi:10.1021/nn204100n

Cited by 215 publications

(187 citation statements)

References 71 publications

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“…To date, carbon nanotubes (CNTs) and anisotropic metal nanoparticles (Au and Ag) have been tested as OI contrast agents with excellent results in vivo. 36,37,[116][117][118] The main requirement of these probes is that they should be able to absorb in the NIR; clearly, materials with highest absorption will produce best contrast. 119 Current synthetic methods can be used to synthesize NPs with absorption bands in the range where OI operates.…”

Section: Optoacoustic Imagingmentioning

confidence: 99%

Tailoring the interplay between electromagnetic fields and nanomaterials toward applications in life sciences: a review

Pino¹

2014

J. Biomed. Opt

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Abstract. Continuous advances in the field of bionanotechnology, particularly in the areas of synthesis and functionalization of colloidal inorganic nanoparticles with novel physicochemical properties, allow the development of innovative and/or enhanced approaches for medical solutions. Many of the present and future applications of bionanotechnology rely on the ability of nanoparticles to efficiently interact with electromagnetic (EM) fields and subsequently to produce a response via scattering or absorption of the interacting field. The crosssections of nanoparticles are typically orders of magnitude larger than organic molecules, which provide the means for manipulating EM fields and, thereby, enable applications in therapy (e.g., photothermal therapy, hyperthermia, drug release, etc.), sensing (e.g., surface plasmon resonance, surface-enhanced Raman, energy transfer, etc.), and imaging (e.g., magnetic resonance, optoacoustic, photothermal, etc.). Herein, an overview of the most relevant parameters and promising applications of EM-active nanoparticles for applications in life science are discussed with a view toward tailoring the interaction of nanoparticles with EM fields. © The Authors.Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Section: Optoacoustic Imagingmentioning

confidence: 99%

Tailoring the interplay between electromagnetic fields and nanomaterials toward applications in life sciences: a review

Pino¹

2014

J. Biomed. Opt

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“…8,9 The need to control the shape of the NPs is therefore strong and the growing interest in shape-controlled syntheses of NCs is confirmed by numerous contributions for different applications such as optics (photodetectors, 10,11 lasers, 12 fluorescence [13][14][15] ), electronics, [16][17][18] catalysis, 19 biological sensing 20 and imaging. 21,22 The top-down (chemical or mechanical exfoliation [23][24][25][26] by ion intercalation, ion exchange, sonication 27 or by the "Scotchtape" method 28 ) as well as the bottom-up approaches have so far been explored to synthesize 2D nanostructures with different techniques used such as physical deposition methods (vapor deposition 29 , molecular beam epitaxy (MBE) 30 ), lithography, 31,32 or wet chemical methods. The latter present the advantage of being relatively cheap, easy to implement and scalable, but the precise control of the size and shape of the synthesized NPs is still challenging.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Colloidal Nanocrystals

et al. 2016

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Abstract:In this paper, we review recent progresses on colloidal growth of 2D nanocrystals.We identify four main sources of anisotropy which lead to the formation of plate-and sheetlike colloidal nanomaterials. Defect induced anisotropy is a growth method which relies on the presence of topological defects at the nanoscale to induce 2D shapes objects. Such a method is particularly important in the growth of metallic nanoobjects. Another way to induce anisotropy is based on ligand engineering. The availability of some nanocrystal facets can be tuned by selectively covering the surface with ligands of tunable thickness. Cadmium chalcogenides nanoplatelets (NPLs) strongly rely on this method which offers atomic control in the thinner direction, down to a few monolayers. 2D objects can also be obtained by post or in situ self-assembly of nanocrystals. This growth method differs from the previous ones in the sense that the elementary objects are not molecular precursors, and is a common method for lead chalcogenide compounds. Finally, anisotropy may simply rely on the lattice anisotropy itself as it is common for rod-like nanocrystals. Colloidally grown Transition Metal DiChalcogenides (TMDC) in particular result from such process. We also present hybrid syntheses which combine several of the previously described methods and other paths, such as cation exchange, which expand the range of available materials. Finally, we discuss in which sense 2D-objects differ from 0D nanocrystals and review some of their applications in optoelectronics, including lasing and photodetection, and biology.

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“…enabled their broad use in applications including surface-enhanced Raman spectroscopy (SERS) [ 2 ] and fl uorescence, [ 3 ] biosensing, [ 4 ] imaging, [ 5 ] therapeutics, [ 6 ] and catalysis. [ 7 ] In particular, Au nanospheres have received intensive attention owing to their convenient synthesis and functionalization, excellent stability, and biocompatibility.…”

mentioning

confidence: 99%

Etching‐Free Epitaxial Growth of Gold on Silver Nanostructures for High Chemical Stability and Plasmonic Activity

Liu

Zhang

et al. 2015

Adv Funct Materials

108

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A robust method for epitaxial deposition of Au onto the surface of Ag nanostructures is demonstrated, which allows effective conversion of Ag nanostructures of various morphologies into Ag@Au counterparts, with the anisotropic ones showing excellent plasmonic properties comparable to the original Ag nanostructures while significantly enhanced stability. Sulfite plays a determining role in the success of this epitaxial deposition as it strongly complexes with gold cations to completely prevent galvanic replacement while it also remains benign to the Ag surface to avoid any ligand‐assisted oxidative etching. By using Ag nanoplates as an example, it is shown that the corresponding Ag@Au nanoplates possess remarkable plasmonic properties that are virtually Ag‐like, in clear contrast to Ag@Au nanospheres that exhibit much lower plasmonic activities than their Ag counterparts. As a result, they display high durability and activities in surface‐enhanced Raman scattering applications. This strategy may represent a general platform for depositing a noble metal on less stable metal nanostructures, thus opening up new opportunities in rational design of functional metal nanomaterials for a broad range of applications.

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Silver Nanoplate Contrast Agents for in Vivo Molecular Photoacoustic Imaging

Cited by 215 publications

References 71 publications

Tailoring the interplay between electromagnetic fields and nanomaterials toward applications in life sciences: a review

Tailoring the interplay between electromagnetic fields and nanomaterials toward applications in life sciences: a review

Two-Dimensional Colloidal Nanocrystals

Etching‐Free Epitaxial Growth of Gold on Silver Nanostructures for High Chemical Stability and Plasmonic Activity

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