Polylysine-grafted Au₁₄₄ nanoclusters: birth and growth of a healthy surface-plasmon-resonance-like band.

ABSTRACT: Poly(amino acid)-coated gold nanoparticles hold promise in biomedical applications, particularly because they combine the unique physicochemical properties of the gold core, excellent biocompatibility, and easy functionalization of the poly(amino acid)-capping shell. Here we report a novel method for the preparation of robust hybrid core-shell nanosystems consisting of a Au₁₄₄ cluster and a densely grafted polylysine layer. Linear polylysine chains were grown by direct N-carboxyanhydride (NCA) polymerization onto ligands capping the gold nanocluster. The density of the polylysine chains and the thickness of the polymer layer strongly depend on the amount and concentration of the NCA monomer and the initiator. The optical spectra of the so-obtained core-shell nanosystems s

SUBMITTER: Guryanov I 

PROVIDER: S-EPMC5414598 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature