Size‐Controlled Synthesis of Highly Monodisperse Gold Nanoparticles without a Size‐Selection and Long Range Ordered 2‐D Arrangement

Abstract

A simple method is used to control the size of cetyltrimethylammoniumbromide-protected Au nanoparticles by a reversal micelle in safe organic solvent. These Au nanoparticles can be evolved to highly monodisperse Au nanoparticles capped 1-dodecanthiol in the 2, 3, and 5 nm diameter by refluxing at 1608 8 8 8 8C for 7 hours. Their ultraviolet visible spectroscopy (UV-vis), x-ray diffraction (XRD, transmission electron microscopy (TEM) showed that all the three different size gold nanoparticles(NPs) displayed high size homogenous properties and easy formed large areas of long ordered two-dimensional arrangement at the air/solid interface.

Effect of Gold Nanoparticles on Fluorescence Properties of Hyperbranched Poly(amido amine)s

“…A weak plasmon band around 520 nm can be found in HPAMAMs/GNPs mixture, which was attributed to their small particles size. Similar trends were observed for GNPs in previous reports [17]. Since the HPAMAMs and GNPs do not contain fluorescent functional groups from the classical viewpoint, exploring the source of the fluorescence should be interesting.…”

Understanding Digestive Ripening of Ligand-Stabilized, Charged Metal Nanoparticles

“…Thus, colloid-based synthesis enables production of smaller sizes of metal NPs in larger bulk quantities than other techniques. The reverse micelle synthesis usually produces NPs whose average size depends somewhat on the micelle size, , but many surfactants are only weakly bound to the surface of the NPs and they can grow much larger than the micelle size …”