Preparation of gold nanoparticles in the presence of citric acid-based dendrimers containing periphery hydroxyl groups

In this work, Au nanoparticles were produced with reduction of HAuCl(4) using NaBH(4) in the presence of different generations of citric acid-based dendrimers. The greater water solubility of the newly prepared dendrimers motivated us for the preparation of Au nanoparticles in water media. Therefore, the stable, isolated and uniform type Au nano particles were prepared through simple process in water. UV-Vis absorption, high-resolution transmission electronic microscopy (HRTEM), electron diffraction (ED) and energy dispersive X-ray (EDX) methods were used to investigate the morphology and structure determination of the obtained gold nanoparticles. (C) 2011 Elsevier B.V. All rights reserved.