Preparation of Gold Nanorods Using 1,2,4-Trihydroxybenzene as a Reducing Agent

We report an improved method for synthesizing gold nanorods (GNRs) by using 1,2,4-trihydroxybenzene as a reducing agent. The method allows a rich array of monodispersed GNRs with longitudinal surface plasmon resonance (LSPR) tunable from 698 to 913 nm to be generated. A large range of diameter distribution of GNRs from 9.3 to 32.2 nm with exceptional monodispersity can be well prepared by this method. These findings indicate that this method has greater performance in controlling the morphology of GNRs than that of traditional approaches with ascorbic acid as a reductant.