title: CPMV-polyelectrolyte-templated gold nanoparticles.
abstract: The use of polyelectrolyte surface-modified Cowpea mosaic virus (CPMV) for the templated synthesis of narrowly dispersed gold nanoparticles is described. The cationic polyelectrolyte, poly(allylamine) hydrochloride (PAH), is electrostatically bound to the external surface of the virus capsid; the polyelectrolyte promotes the adsorption of anionic gold complexes, which are then easily reduced, under mild conditions, to form a metallic gold coating. As expected, the templated gold nanoparticles can be further modified with thiol reagents. In contrast, reaction of polyelectrolyte-modified CPMV (CPMV-PA) with preformed gold nanoparticles results in the self-assembly of large, hexagonally packed, tessellated-spheres.
authors.affiliation: Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, United Kingdom.
authors.forename: Alaa A A
authors.initials: AA
authors.lastname: Aljabali
authors.forename: George P
authors.initials: GP
authors.lastname: Lomonossoff
authors.forename: David J
authors.initials: DJ
authors.lastname: Evans
mesh_terms: D000327:Adsorption; D017798:Comovirus / Q000737:chemistry*; D004573:Electrolytes / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D011073:Polyamines / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D004573:Electrolytes; D011073:Polyamines; C063994:polyallylamine; D006046:Gold