Shape‐Controlled Metal Nanoparticles and Their Assemblies with Optical Functionalities

Kawamura, Go; Nogami, Masayuki; Matsuda, Atsunori

doi:10.1155/2013/631350

Cited by 35 publications

(17 citation statements)

References 61 publications

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“…Gold nanoparticles have led the world of nanotheranostics with their unique physical and chemical properties. Ranging in diameter from small clusters of 2–5 nm up to 100 nm, AuNPs can be synthesized in different shapes such as spheres, hollow, rods, diamonds, prisms, cages, either single solid bodies or in a core shell format [ 26 , 27 ]. Each combination of size and shape shows slightly different properties that may be explored for theranostic purposes, such as optical properties from intense bright colors, contrast agents and photothermal capability in the infrared (IR) and near infrared (NIR), biofunctionalization potential and toxicity [ 20 , 28 ].…”

Section: Focus On Goldmentioning

confidence: 99%

Gold Nanotheranostics: Proof-of-Concept or Clinical Tool?

et al. 2015

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Nanoparticles have been making their way in biomedical applications and personalized medicine, allowing for the coupling of diagnostics and therapeutics into a single nanomaterial-nanotheranostics. Gold nanoparticles, in particular, have unique features that make them excellent nanomaterials for theranostics, enabling the integration of targeting, imaging and therapeutics in a single platform, with proven applicability in the management of heterogeneous diseases, such as cancer. In this review, we focus on gold nanoparticle-based theranostics at the lab bench, through pre-clinical and clinical stages. With few products facing clinical trials, much remains to be done to effectively assess the real benefits of nanotheranostics at the clinical level. Hence, we also discuss the efforts currently being made to translate nanotheranostics into the market, as well as their commercial impact.

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Section: Focus On Goldmentioning

confidence: 99%

Gold Nanotheranostics: Proof-of-Concept or Clinical Tool?

et al. 2015

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“…Noble metal nanoparticles have attracted much attention in the last decades because they can be prepared through simple and versatile methods resulting in nm sized nanostructures whose dimension and shape finely tune their optical and electronic properties [1][2][3]. The nm sized particles show an intense optical response determined by the surface plasmon resonance (SPR), whose frequency and spectral broadening can be controlled by the shape, composition, and concentration of the colloidal nanomaterial [4,5].…”

Section: Introductionmentioning

confidence: 99%

UV Treatment of the Stabilizing Shell for Improving the Photostability of Silver Nanoparticles

Rinaldi

Tarpani

Latterini

2016

Journal of Nanomaterials

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Silver nanoparticles or nanoclusters are quite sensitive to light exposure. In particular, irradiation in the localized surface plasmon resonance (LSPR) region brings about a drastic modification of their optical properties due to growth and reshaping of the nanoparticles. In order to obtain luminescent colloids, small silver colloidal nanoparticles were prepared in chloroform using vinylpyrrolidone oligomers as capping agent and their luminescence properties were used to control their stability upon prolonged exposure to visible light. The polymeric shell around the metal clusters was hardened through photo-cross-linking by UV light. This process did not alter the morphology and the optical properties of the nanoparticles but greatly improved the particle photostability as confirmed also by confocal laser scanning microscopy measurements. The data clearly show that UV curing of the stabilizing layer could be a simple postsynthetic procedure to obtain materials with stable properties.

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“…Since the optical properties of these particles depend on their sizes and shapes, one of the desired goals is to control the shapes of metal and semiconductor nanoparticles. Shape control has been successfully demonstrated for gold nanoparticles using nonionic surfactants, silver underpotential deposition, and nanoreplica molding [8][9][10][11]. Nanoreplica molding has been demonstrated as a low-cost method for manufacturing a variety of devices comprised of nano structured surfaces.…”

Section: Introductionmentioning

confidence: 99%

Simulation and Optimization of Nonperiodic Plasmonic Nano-Particles

Akhlaghi¹,

Emami²,

Sadeghi³

et al. 2014

Journal of the Optical Society of Korea

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A binary-coupled dipole approximation (BCDA) is described for designing metal nanoparticles with nonperiodic structures in one, two, and three dimensions. This method can be used to simulate the variation of near-and far-field properties through the interactions of metal nanoparticles. An advantage of this method is in its combination with the binary particle swarm optimization (BPSO) algorithm to find the best array of nanoparticles from all possible arrays. The BPSO algorithm has been used to design an array of plasmonic nanospheres to achieve maximum absorption, scattering, and extinction coefficient spectra. In BPSO, a swarm consists of a matrix with binary entries controlling the presence ('1') or the absence ('0') of nanospheres in the array. This approach is useful in optical applications such as solar cells, biosensors, and plasmonic nanoantennae, and optical cloaking.

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Shape‐Controlled Metal Nanoparticles and Their Assemblies with Optical Functionalities

Cited by 35 publications

References 61 publications

Gold Nanotheranostics: Proof-of-Concept or Clinical Tool?

Gold Nanotheranostics: Proof-of-Concept or Clinical Tool?

UV Treatment of the Stabilizing Shell for Improving the Photostability of Silver Nanoparticles

Simulation and Optimization of Nonperiodic Plasmonic Nano-Particles

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