Stoichiometric functionalization of gold nanoparticles in solution through a free radical polymerization approach.
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.
Krüger
Christian
C
Department of Chemistry and Scientific Center for Materials Science, Philipps-Universität Marburg, Hans-Meerwein-Strasse, D-35032 Marburg, Germany.
Agarwal
Seema
S
Greiner
Andreas
A
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
D005609:Free Radicals; D011073:Polyamines; D012996:Solutions; D013438:Sulfhydryl Compounds; C063994:polyallylamine; D006046:Gold