Seed-Mediated Growth Approach for Shape-Controlled Synthesis of Spheroidal and Rod-like Gold Nanoparticles Using a Surfactant Template

Jana, Nikhil R.; Gearheart, Latha A.; Murphy, Catherine J.

doi:10.1002/1521-4095(200109)13:18<1389::aid-adma1389>3.0.co;2-f

Cited by 1,665 publications

(1,489 citation statements)

References 10 publications

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“…The absorption spectrum is sensitive to various factors such as particle size [1−3] and shape [4,5], particle charge [6−10], aggregation state [11,12], and physicochemical micro-environment of the surrounding medium [13−16]. The increase of the electron density on the particle results in the increase of the plasma frequency of the electrons in the particle, leading to a blue shift of the plasmon absorption band.…”

Section: Introductionmentioning

confidence: 99%

Time dependent spectral change upon potential step perturbation for Au nanoparticles immobilized on an organic monolayer-modified ITO electrode

Toyota

Sagara

2006

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Time dependent spectral change of Au nanoparticles immobilized on an ITO electrode upon the change of electrode potential was investigated. Au nanoparticles of a diameter of 11 nm were immobilized on a monolayer of alkylsiloxane with an amine or thiol end group on an ITO electrode.In addition to the previously clarified charging-discharging process of the particles in response to the sine-wave potential modulation at frequencies higher than 8 Hz, very slow relaxation of visible light absorption after a potential step was found in the present work

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Section: Introductionmentioning

confidence: 99%

Time dependent spectral change upon potential step perturbation for Au nanoparticles immobilized on an organic monolayer-modified ITO electrode

Toyota

Sagara

2006

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…That was the first preparation of uniform gold nanorods using a "soft template." Jana et al [15][16][17] similarly reported seed-mediated gold nanorod synthesis using a suitable reaction solution. The seed particles were prepared in a CTAB solution using NaBH 4 as a reducing agent.…”

Section: Preparation Of Gold Nanorods and Their Optical Propertiesmentioning

confidence: 99%

Gold Nanorods as Nanodevices for Bioimaging, Photothermal Therapeutics, and Drug Delivery

Haine

Niidome

2017

Chem. Pharm. Bull.

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Gold nanorods are promising metals in several biomedical applications such as bioimaging, thermal therapy, and drug delivery. Gold nanorods have strong absorption bands in near-infrared (NIR) light region and show photothermal effects. Since NIR light can penetrate deeply into tissues, their unique optical, chemical, and biological properties have attracted considerable clinical interest. Gold nanorods are expected to act not only as on-demand thermal converters for photothermal therapy but also as mediators of a controlled drug-release system responding to light irradiation. In this review, we discuss current progress using gold nanorods as bioimaging platform, phototherapeutic agents, and drug delivery vehicles.

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“…In this paper it is shown that different sized nanoparticles can be prepared by varying the seed concentration. Other seeded growth methods have already been reported both for gold and silver nanoparticles [10,[23][24][25][26] but not with HQ as a reducing agent. HQ is widely used in photographic film development and selectively reduces silver ions in the presence of metallic silver nanoclusters [10,27,28].…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

Synthesis of size tunable monodispersed silver nanoparticles and the effect of size on SERS enhancement

Cassar

Graham

Larmour

et al. 2014

Vibrational Spectroscopy

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This version is available at https://strathprints.strath.ac.uk/47444/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the AbstractSpherical and monodispersed silver nanoparticles (AgNPs) are ideal for fundamental research as the contribution from size and shape can be accounted for in the experimental design. In this paper a seeded growth method is presented, whereby varying the concentration of sodium borohydride reduced silver nanoparticle seeds different sizes of stable spherical nanoparticles with a low polydispersity nanoparticles are produced using hydroquinone as a selective reducing agent. The surface-enhanced Raman scattering (SERS) enhancement factor for each nanoparticle size produced (17, 26, 50, & 65 nm) was then assessed using three different analytes, rhodamine 6G (R6G), malachite green oxalate (MGO) and thiophenol (TP). The enhancement factor gives an indication of the Raman enhancement effect by the nanoparticle. Using non-aggregated conditions and two different laser excitation wavelength (633 nm and 785 nm) it is shown that an increase in particle size results in an increased enhancement for each analyte used.

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Seed-Mediated Growth Approach for Shape-Controlled Synthesis of Spheroidal and Rod-like Gold Nanoparticles Using a Surfactant Template

Cited by 1,665 publications

References 10 publications

Time dependent spectral change upon potential step perturbation for Au nanoparticles immobilized on an organic monolayer-modified ITO electrode

Time dependent spectral change upon potential step perturbation for Au nanoparticles immobilized on an organic monolayer-modified ITO electrode

Gold Nanorods as Nanodevices for Bioimaging, Photothermal Therapeutics, and Drug Delivery

Synthesis of size tunable monodispersed silver nanoparticles and the effect of size on SERS enhancement

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