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Keywords:

  • assemblies;
  • nanoparticles;
  • polysilane;
  • thioether

Abstract

Linear polysilanes, [{PhHSi}x{Ph(RSCH2CH2CH2)Si}1x]n [R = n-dodecyl (1), n-hexyl (2), n-butyl (3)], have been synthesized and their reactivity with HAuCl4·3H2O (Polymer:Au = 10:1, RT, toluene) examined to gain an insight into the role of polymer-supported thioether groups in the stabilization of in situ generated gold nanoparticles (AuNPs). The method allows a simple approach for expeditious synthesis of assemblies of AuNPs comprising of well-separated individual nanoparticles of average diameter 4.5 ± 1.9 nm. In this regard, polysilane 1 with dodecyl side chains serves as a superior matrix than 2 and 3 and confers long shelf-life stability to the nanoparticle assembly. The structural attributes are preserved in Au–Pd bimetallic nanoparticles which have been synthesized from the polymer-gold nanoassembly. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013