Core shell hybrids based on noble metal nanoparticles and conjugated polymers: synthesis and characterization
1 Department of Chemistry, University of Rome "Sapienza", P.le A.Moro 5, 00185 Rome, Italy
2 Department of Physics, Unità INSTM and CISDiC University Roma Tre, Via della Vasca Navale 85, 00146 Rome, Italy
3 Department of Physics, University of Rome "Sapienza", P.le A.Moro 5, 00185 Rome, Italy
Nanoscale Research Letters 2011, 6:98 doi:10.1186/1556-276X-6-98Published: 21 January 2011
Noble metal nanoparticles of different sizes and shapes combined with conjugated functional polymers give rise to advanced core shell hybrids with interesting physical characteristics and potential applications in sensors or cancer therapy. In this paper, a versatile and facile synthesis of core shell systems based on noble metal nanoparticles (AuNPs, AgNPs, PtNPs), coated by copolymers belonging to the class of substituted polyacetylenes has been developed. The polymeric shells containing functionalities such as phenyl, ammonium, or thiol pending groups have been chosen in order to tune hydrophilic and hydrophobic properties and solubility of the target core shell hybrids. The Au, Ag, or Pt nanoparticles coated by poly(dimethylpropargylamonium chloride), or poly(phenylacetylene-co-allylmercaptan). The chemical structure of polymeric shell, size and size distribution and optical properties of hybrids have been assessed. The mean diameter of the metal core has been measured (about 10-30 nm) with polymeric shell of about 2 nm.