title: Stoichiometric functionalization of gold nanoparticles in solution through a free radical polymerization approach.
abstract: A new simple concept for the stoichiometrical functionalization of nanoparticles based on free radical polymerization of vinyl protected nanoparticles is presented. To demonstrate this concept 2-bis(4-vinylphenyl)disulfane was synthesized and used in the synthesis of gold nanoparticles, leading to 4-vinylthiophenol functionalized nanoparticles. Simple free radical polymerization of these particles initiated by 4,4'-azobis-(4-cyanopentanoic acid) delivered nanoparticles with a single carboxyl group. These monofunctionalized gold nanoparticles were utilized for chemical preparation of gold nanoparticle dimers as well as for construction of gold nanoparticle arrays via binding to polyallylamine.
authors.affiliation: Department of Chemistry and Scientific Center for Materials Science, Philipps-Universität Marburg, Hans-Meerwein-Strasse, D-35032 Marburg, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Krüger
authors.forename: Seema
authors.initials: S
authors.lastname: Agarwal
authors.forename: Andreas
authors.initials: A
authors.lastname: Greiner
mesh_terms: D005609:Free Radicals / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D015394:Molecular Structure; D010316:Particle Size; D011073:Polyamines / Q000737:chemistry*; D012996:Solutions / Q000737:chemistry; D013237:Stereoisomerism; D013438:Sulfhydryl Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D013499:Surface Properties
chemical_list: D005609:Free Radicals; D011073:Polyamines; D012996:Solutions; D013438:Sulfhydryl Compounds; C063994:polyallylamine; D006046:Gold