Gold nanowires with high aspect ratio and morphological purity: Synthesis, characterization, and evaluation of parameters

Dertli, Elcin
Coskun, Sahin
Nalbant Esentürk, Emren
In this study, gold (Au) nanowires were synthesized with a modified hydrothermal process, and high structural purity and control over Au nanowire diameter were achieved. Parametric study was performed to examine the effect of surfactant concentration, reaction time, and temperature on the quality of the synthesized products. The optimum conditions were determined for the synthesis with two different surfactant molecules, namely hexamethylenetetramine and ethylenediaminetetraacetic acid. Au nanowires synthesized under optimum conditions have high aspect ratio (diameters in the range of 50-110 nm and lengths in micrometers) with high structural purity and are potentially useful for applications such as surface-enhanced Raman scattering spectroscopy and transparent conducting electrodes for optoelectronic devices.


Gold nanostar @ iron oxide core-shell nanostructures: synthesis, characterization, and demonstrated surface-enhanced Raman scattering properties
Nalbant Esentürk, Emren (2013-01-01)
Iron oxide-coated gold nanostars are produced by first synthesizing gold nanostars (ca 150 nm), then introducing a polyvinylpyrollidone coating followed by reducing iron(II) and iron(III) salts on the nanoparticle (NP) surface. Morphological and chemical composition characterizations of these composite nanomaterials were performed via field-emission transmission electron microscopy/energy dispersive spectroscopy studies. The analysis revealed that the majority of the NPs had coating of approximately 1-5 nm ...
Polyol Synthesis of Silver Nanowires: An Extensive Parametric Study
Coskun, Sahin; Aksoy, Burcu; Ünalan, Hüsnü Emrah (2011-11-01)
Silver nanowires have been synthesized by a polyol process. A detailed parametric study determining the relationship between final morphology of the products and,temperature, injection rate, molar ratio of poly(vinylpyrrolidone) to silver nitrate, sodium chloride amount, and stirring rate is presented. The as-synthesized silver nanowires are analyzed by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The dependency of nano-wire morphology and aspect ra...
TiN(IV) oxide coated gold nanoparticles: synthesis, characterization and investigation of surface enhanced raman scattering activities
Elçi, Aylin; Nalbant Esentürk, Emren; Department of Chemistry (2017)
Noble metal nanoparticles (i.e. gold (Au) and silver (Ag)) have received enormous attention due to their superior optical properties related to localized surface plasmon resonance (LSPR) and their potential applications in sensing, imaging, catalysis and optoelectronic devices. In particular, the ones with anisotropic morphologies have attracted intense interest from the researchers because of their superior optoelectronic properties. High electromagnetic field forms on the nanoparticle surface. The intensi...
Optical characterization of Ga2SeS layered crystals by transmission, reflection and ellipsometry
IŞIK, MEHMET; Hasanlı, Nızamı (2015-07-10)
Optical properties of Ga2SeS crystals grown by Bridgman method were investigated by transmission, reflection and ellipsometry measurements. Analysis of the transmission and reflection measurements performed in the wavelength range of 400-1100 nm at room temperature indicated the presence of indirect and direct transitions with 2.28 eV and 2.38 eV band gap energies. Ellipsometry measurements were carried out in the 1.2-6.0 eV spectral region to get information about optical constants, real and imaginary part...
Transparent and conducting copper nanowire networks with improved oxidation stability
Polat Genlik, Sevim; Ünalan, Hüsnü Emrah; Department of Metallurgical and Materials Engineering (2018)
Among all scalably synthesized metal nanowires, silver nanowires are the most widely studied and the first commercialized nanowire type. On the other hand, copper nanowires (Cu NWs) are not far behind the silver nanowires and hold great promise due to their lower cost in combination with comparable electrical conductivity in the network form. However, oxidation is the prominent barrier in front of the large scale utilization of Cu NWs. It is well known that bulk copper itself is also prone to oxidation, and...
Citation Formats
E. Dertli, S. Coskun, and E. Nalbant Esentürk, “Gold nanowires with high aspect ratio and morphological purity: Synthesis, characterization, and evaluation of parameters,” JOURNAL OF MATERIALS RESEARCH, pp. 250–260, 2013, Accessed: 00, 2020. [Online]. Available: