Synchrotron X-ray synthesis of colloidal gold particles for drug delivery

We reported a simple approach to generate gold colloidals from HAuCl 4 containing aqueous solution by synchrotron X-ray irradiation at room temperature. Gold colloidals were readily formed with reasonable yield. It was also observed that the addition of NaHCO 3 tremendously modified the size and size distribution of gold nanoparticles. Our preliminary drug carrying experiment showed that thus produced gold nanopartricles could successfully carry anti-tumor drug and possess potential for drug delivery applications.