Gold Nanostars: Synthesis, Optical and SERS Analytical Properties

Gold nanostars are among the most efficient plasmonic nanomaterials for optical sensing with surface enhanced Raman scattering. In recent years, gold have increased relevance in physics, analytical chemistry, environmental science, biology and medicine, particular therapy. These colloids can sustain ultrastrong electromagnetic fields which allow their use as single particles enhancers; colloidally stable may a marked catalytical activity. Due to exotic shape, these present characteristic reactive behaviors. Here, we briefly discuss properties, synthetic routes applications of nanoparticles.