A New Strategy for the Synthesis of Semiconductor-Metal Hybrid Nanocomposites: Electrostatic Self-Assembly of Nanoparticles

CdS-Au hybrid nanoparticles are synthesized through electrostatically self-assembling of the pre-formed monodisperse CdS and Au nanoparticles via the interaction between ammonium ions and carboxylate ions which were modified on CdS and Au nanoparticle surface, respectively.