Biopharmaceutical applications of nanogold

The application of nanogold in biopharmaceutical field is reviewed in this work. The properties of nanogold including nanogold surface Plasmon absorption and nanogold surface Plas- mon light scattering are illustrated. The physical, chemical, biosynthesis methods of nanogold prep- aration are presented. Catalytic properties as well as biomedical applications are highlighted as one of the most important applications of nanogold. Biosensing, and diagnostic and therapeutic appli- cations of gold nanoparticles are evaluated. Moreover, gold nanoparticles in drugs, biomolecules and proteins’ delivery are analyzed. Gold nanoparticles for the site-directed photothermal applica- tions are reviewed as the most fruitful research area in the future.