Polyethylene glycol gold-nanoparticles: Facile nanostructuration of doxorubicin and its complex with DNA molecules for SERS detection

Schematic representation of the biosensor elaboration strategy: (A) interaction of doxorubicin with DNA onto pegylated gold nanostructured surface. (B) Interaction of doxorubicin loaded to PEG AuNPs with DNA onto pegylated gold nanostructured surface.