Electrochemical formation of crooked gold nanorods and gold networked structures by the additive organic solvent

Huang, Chien-Jung; Chiu, Pin-Hsiang; Wang, Yeong-Her; Yang, Cheng–Fu; Feng, Shih‐Wei

doi:10.1016/j.jcis.2006.10.009

Cited by 27 publications

(16 citation statements)

References 36 publications

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“…The XRD pattern of AuNRs-LA-COS showed five characteristic peaks at 23.14°, 38.13°, 44.54°, 64.53° and 77.92°, which clearly demonstrated the characteristic peaks associated with COS and AuNRs. These peaks were consistent with the joint committee on powder diffraction standards (JCPDS 04-0784) and earlier reports [40,41]. The Fourier-transform infrared (FTIR) study of AuNRs and AuNRs-LA-COS were summarized in Figure 1c.…”

Section: Resultssupporting

confidence: 89%

Biocompatible Chitosan Oligosaccharide Modified Gold Nanorods as Highly Effective Photothermal Agents for Ablation of Breast Cancer Cells

et al. 2018

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Photothermal therapy (PTT) using biocompatible nanomaterials have recently attracted much attention as a novel candidate technique for cancer therapy. In this work we report the performance of newly synthesized multidentate chitosan oligosaccharide modified gold nanorods (AuNRs-LA-COS) as novel agents for PTT of cancer cells due to their excellent biocompatibility, photothermal stability, and high absorption in the near-infrared (NIR) region. The AuNRs-LA-COS exhibit a strong NIR absorption peak at 838 nm with a mean length of 26 ± 3.1 nm and diameter of 6.8 ± 1.7 nm, respectively. The temperature of AuNRs-LA-COS rapidly reached 52.6 °C for 5 min of NIR laser irradiation at 2 W/cm2. The AuNRs-LA-COS had very low cytotoxicity and exhibited high efficiency for the ablation of breast cancer cells in vitro. The tumor-bearing mice were completely ablated without tumor recurrence after photothermal treatment with AuNRs-LA-COS (25 µg/mL) under laser irradiation. In summary, this study demonstrated that AuNRs-LA-COS with laser irradiation as novel agents pave an alternative way for breast cancer therapy and hold great promise for clinical trials in the near future.

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Section: Resultssupporting

confidence: 89%

Biocompatible Chitosan Oligosaccharide Modified Gold Nanorods as Highly Effective Photothermal Agents for Ablation of Breast Cancer Cells

et al. 2018

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“…A simple electrochemical method for the synthesis of 1D crooked gold nanorods (CGNRs) and 2D gold network structures in the presence of isopropanol (IPA) solvent with ionic surfactant solution has been reported [48]. The CGNRs formed had many aspect ratio (c) values, and surface plasmon absorption was red-shifted from 532 to 560 nm.…”

Section: Gold Nanorodsmentioning

confidence: 99%

Electrodeposition: a versatile and inexpensive tool for the synthesis of nanoparticles, nanorods, nanowires, and nanoclusters of metals

2010

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The synthesis of various nanoscale materials, such as nanoparticles, nanowires of Au, Pt, Ni Co, Fe, Ag etc., by electrodeposition techniques have been demonstrated in this article. Both potentiostatic and galvanostatic methods were employed to carry out the electrodeposition process under different potential ranges, time durations, and current densities. The electrochemical behavior of the deposited nanoparticles on various substrates was investigated by cyclic voltammetric and chronoamperometric techniques. The synthesis of mono-dispersed gold (Au) nanoparticles on indium tin oxide (ITO) coated glass, preparation of Au nanorods on nanoporous anodic alumina oxide (AAO), formation of Au nanoclusters on polypyrrole-modified glassy carbon electrode and one-step electrodeposition of nickel nanoparticle chains embedded in TiO 2 etc. have been highlighted in this article. The potential applications of synthesized nanoparticles such as the role of maghemite (Fe 2 O 3 ) in arsenic remediation, higher electrocatalytic activity of Ag nanoclusters for the reduction of benzyl chloride, and the role of C 60 nanoparticle-doped carbon film in fabrication processes are also presented in this article.

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“…The schematic of chemical reaction in seeding process is shown in Figure 3. Seeds are small nuclei 48 which serve as a base to develop more complex (anisotropic) structure. High-quality seed solution is needed to obtain high-quality NPs.…”

Section: Resultsmentioning

confidence: 99%

Formation of anisotropic gold nanoparticles on indium tin oxide substrates as a plasmonic sensing material

Razali

Morsin

Nafisah

et al. 2020

Nanomaterials and Nanotechnology

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A simple technique of seed-mediated growth has been successfully performed to grow anisotropy gold nanoparticles on solid substrates. The growth of the gold nanoparticles has been carried out in the presence of a binary surfactant mixture of hexadecyltrimethylammonium bromide with two different molecular weights of a capping agent, namely polyvinylpyrrolidone: 40,000 and 55,000. In this study, the effect of process parameters, growth time and molecular weight of capping agent was investigated. The growth time shows a significant impact on the shape and size of nanoparticles. The shorter growth time produced small spherical to square-like shape particles, whereas bigger particles including nanorods, nanosquares and nanotriangles were formed with longer growth time. The shape controlling agent, polyvinylpyrrolidone, was used to synthesis gold nanoparticles. It was found that monodisperse gold nanoparticles with uniform shape and size are hardly obtained when polyvinylpyrrolidone 40,000 was used as capping agent. Polyvinylpyrrolidone 55,000 produced more uniform shape and size of gold nanoparticles. Thus, these process parameters were found affected to the size, shape, surface density and uniformity of gold nanoparticles. This sample was further applied as a sensing material in the detection of toxic fungicide, namely chlorothalonil. The sensitivity of the sensor system was determined by the changes in peak positions and intensities of the transverse and longitudinal surface plasmon resonance peaks on different medium, that is, air, deionized water and chlorothalonil solution. The sensor response of gold nanoparticles thin film in 30 mM chlorothalonil showed two resonance peaks in comparison to the control experiment without gold nanoparticle thin film. The gold nanoparticles thin film sensor was successfully synthesized and potentially useful as a sensing material for fungicide detection.

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Electrochemical formation of crooked gold nanorods and gold networked structures by the additive organic solvent

Cited by 27 publications

References 36 publications

Biocompatible Chitosan Oligosaccharide Modified Gold Nanorods as Highly Effective Photothermal Agents for Ablation of Breast Cancer Cells

Biocompatible Chitosan Oligosaccharide Modified Gold Nanorods as Highly Effective Photothermal Agents for Ablation of Breast Cancer Cells

Electrodeposition: a versatile and inexpensive tool for the synthesis of nanoparticles, nanorods, nanowires, and nanoclusters of metals

Formation of anisotropic gold nanoparticles on indium tin oxide substrates as a plasmonic sensing material

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