DESCRIPTION:

This disclosure describes a new technique for the synthesis of monodispersed Au nanoparticles in the size of 30-90 nm diameters and size.  Monodispersity up to 2% relative standard deviations.  While there are a number of methods or techniques reported in the literature for gold nanoparticles of various sizes, there is no technique reported for the systematic variation of Au particles sizes up to 90 nm with up to 2% relative standard deviation in size. protocol have been established to allow preparation of gold nanoparticles of desired sizes, shapes and monodispersity in a systematic way.  Such ability is critical for the targeted chemical, bioanalytical, biomedical, optical and nanotechnological applications.  We have developed a technique which can prepare seeded growth of gold nanoparticles to almost any desired size.

ADVANTAGES:

This technique is simple and effective, and can produce monodispersed Au nanoparticles of almost any sizes below 100 nm diameter simply by controlling the synthetic feed ratios of the seeds and metal precursor concentrations.  The size monodispersity is much higher than most commercial Au nanoparticles.

DISADVANTAGES:

None.

PATENT STATUS:

Patent pending (U.S. Patent Application # 11/176,021, Filing Date: 7/7/05).  The invention is licensed exclusively in a certain field of use.