Effect of pH on Morphology and Stability of Gold Nanorods Synthesized by Seedless Method

Abstract

In this thesis, gold nanorods are prepared by seedless method. In this method, we synthesize two series of gold nanorods. In the first series gold nanorods are prepared by seedless route at two different pH. In the second series, two samples of gold nanorods are synthesized under identical conditions simultaneously at pH-2.2 and they are presented at different pH matching with series-1. Stability of gold nanorods is observed over 36 days with UV-Visible spectroscopy and photon correlation spectroscopy. Both series of gold nanorods shows impressive stability. No significant difference is observed in the stability of gold nanorods that are synthesized at different pH or stand at different pH.