Preparation of Polymer Coated Gold Nanoparticles

A. LEDO-SUÁREZ; M. LAZZARI; C.E. HOPPE; M.A. LÓPEZ-QUINTELA

Santiago de Compostela, España

Otro; V Reunión del Grupo Especializado de Física del Estado Sólido (GEFES); 2008

The fabrication of metallic nanoparticles of controlled size, shape and functionality is the goal for the development of novel materials. In this context, the unique properties of thiolate-protected gold nanoparticles (NPs) make them excellent candidates for use in a variety of advanced technologies[1]. Among several established routes of preparation, our interest is focused on the synthesis of NPs in the presence of functionalized polymers. This strategy firstly requires the synthesis of suitable tailor made polymers with mercapto functionality, followed by the design of an effective technique for the particle synthesis which allows to directly obtaining polymer-capped gold NPs. The formation of NPs was studied in the presence of diverse polymers as capping agents, with different main chain functionalities and lengths. In this paper we reports preliminary results on the important role played by these polymeric ligands on the stabilization and control of nanoparticle formation as well as on their arrangement into ordered layers