Synthesis,properties,and optical applications of noble metal nanoparticle-biomolecule conjugates

• 出 处: Chinese Science Bulletin
• 发表日期: 2012年Z1期
• 关键词: noble photonic biosensors silver covalent affinity thiol constructing numerous b

Noble metal nanoparticles,such as gold or silver nanoparticles and nanorods,exhibit unique photonic,electronic and catalytic properties.Functionalization of noble metal nanoparticles with biomolecules(e.g.,protein and DNA) produces systems that possess numerous applications in catalysis,delivery,therapy,imaging,sensing,constructing nanostructures and controlling the structure of biomolecules.In this paper,the recent development of noble metal nanoparticle-biomolecule conjugates is reviewed from the following three aspects:(1) synthesis of noble metal nanoparticle-biomolecule systems by electrostatic adsorption,direct chemisorption of thiol derivatives,covalent binding through bifunctional linkers and specific affinity interactions;(2) the photonic properties and bioactivation of noble metal nanoparticle-biomolecule conjugates;and(3) the optical applications of such systems in biosensors,and medical imaging,diagnosis,and therapy.The conjugation of Au and Ag nanoparticles with biomolecules and the most recent optical applications of the resulting systems have been focused on.

Noble metal nanoparticles, such as gold or silver nanoparticles and nanorods, exhibit unique photonic, electronic and catalytic properties. Functionalization of noble metal nanoparticles with biomolecules (eg, protein and DNA) produces systems that claimed numerous applications in catalysis, delivery, therapy, imaging , sensing, constructing nanostructures and controlling the structure of biomolecules. In this paper, the recent development of noble metal nanoparticle-biomolecule conjugates is reviewed from the following three aspects: (1) synthesis of noble metal nanoparticle-biomolecule systems by electrostatic adsorption, direct chemisorption of thiol derivatives, covalent binding through bifunctional linkers and specific affinity interactions; (2) the photonic properties and bioactivation of noble metal nanoparticle-biomolecule conjugates; and (3) the optical applications of such systems in biosensors, and medical imaging, diagnosis, and therapy. The conjugation of Au and Ag nanoparticles with biomolecul es and the most recent optical applications of the resulting systems have been focused on.