Gold-polymer Nanocomposites and Their Applications

Document Type : compile

Authors

Abstract

Unique properties of gold nanoparticles, such as the surface plasmon resonance (SPR), easy synthesis and modification, control on size and shape, chemically inertness and biocompatibility have attracted much attentionin recent years. The plasmonic properties of gold nanostructures for different applications can be controlled by changing their size and the shape. Introducing gold nanoparticles into polymer systems or their surface modification will improve their solution stability and make them susceptible to respond to external stimuli due to the existing functionalities. Smart gold-polymer nanocomposite with defined properties can be obtained by employing responsive polymers to light, temperature and pH stimuli. Controlling SPR properties of gold nanoparticles make them appropriate for different purposes like photothermal treatment of cancer cells, photodynamic therapy, plasmonic vesicles for drug delivery system, surface enhanced Raman scattering (SERS) and tumor computed tomography imaging. Coating of magnetic nanoparticles with gold promotes their colloidal stability, optical and conductive properties and also enhances their surface chemical reactions and biocompatibility for in vivo applications. In addition, the remote control of plasmonic properties will become feasible by an external electromagnetic field.

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